{"id":42277,"date":"2025-06-07T15:30:56","date_gmt":"2025-06-07T07:30:56","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/42277.html"},"modified":"2025-06-07T15:30:56","modified_gmt":"2025-06-07T07:30:56","slug":"%e5%bd%93%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%b4%a9%e6%ba%83%e6%97%b6%ef%bc%8c%e4%bd%a0%e7%9a%84%e5%91%8a%e8%ad%a6%e7%b3%bb%e7%bb%9f%e8%bf%98%e5%9c%a8%e7%9d%a1%e8%a7%89%ef%bc%9f-c%e4%bc%81","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/42277.html","title":{"rendered":"\u5f53\u670d\u52a1\u5668\u5d29\u6e83\u65f6\uff0c\u4f60\u7684\u544a\u8b66\u7cfb\u7edf\u8fd8\u5728\u7761\u89c9\uff1f\u2014\u2014C#\u4f01\u4e1a\u7ea7\u544a\u8b66\u7cfb\u7edf\u8bbe\u8ba1\u5b9e\u6218"},"content":{"rendered":"<h4>\u544a\u8b66\u7cfb\u7edf\u7684\u6838\u5fc3\u9700\u6c42\u4e0e\u4f01\u4e1a\u7ea7\u75db\u70b9<\/h4>\n<hr \/>\n<h5>\u9700\u6c421&#xff1a;\u5b9e\u65f6\u6027&#xff08;\u6beb\u79d2\u7ea7\u54cd\u5e94 vs \u201c\u6545\u969c\u540e1\u5c0f\u65f6\u624d\u6536\u5230\u90ae\u4ef6\u201d&#xff09;<\/h5>\n<p>\u573a\u666f\u518d\u73b0&#xff1a; \u201c\u4f60\u7684\u544a\u8b66\u7cfb\u7edf\u50cf&#034;\u6162\u52a8\u4f5c\u7535\u5f71\u201d&#xff1a;\u2018\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u8017\u5c3d&#xff0c;\u4f46\u544a\u8b66\u90ae\u4ef6\u8fd8\u5728\u961f\u5217\u91cc\u6392\u961f&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u5b9e\u65f6\u544a\u8b66\u7ba1\u9053  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">RealTimeAlertPipeline<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IAlertNotifier<\/span> _notifier<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IRuleEngine<\/span> _ruleEngine<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IAlertQueue<\/span> _queue<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u5f02\u6b65\u961f\u5217  <\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">RealTimeAlertPipeline<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token class-name\">IAlertNotifier<\/span> notifier<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token class-name\">IRuleEngine<\/span> ruleEngine<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token class-name\">IAlertQueue<\/span> queue<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _notifier <span class=\"token operator\">&#061;<\/span> notifier<span class=\"token punctuation\">;<\/span><br \/>\n        _ruleEngine <span class=\"token operator\">&#061;<\/span> ruleEngine<span class=\"token punctuation\">;<\/span><br \/>\n        _queue <span class=\"token operator\">&#061;<\/span> queue<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token comment\">\/\/ &#x1f525; \u63a5\u6536\u76d1\u63a7\u6570\u636e\u5e76\u89e6\u53d1\u544a\u8b66  <\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">ProcessMetric<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">MetricData<\/span> data<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_ruleEngine<span class=\"token punctuation\">.<\/span><span class=\"token function\">ShouldAlert<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u89c4\u5219\u5339\u914d  <\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> alert <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">BuildAlert<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">await<\/span> _queue<span class=\"token punctuation\">.<\/span><span class=\"token function\">Enqueue<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u5f02\u6b65\u5165\u961f  <\/span><br \/>\n            <span class=\"token keyword\">await<\/span> _notifier<span class=\"token punctuation\">.<\/span><span class=\"token function\">Send<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u540c\u6b65\u89e6\u53d1\u5373\u65f6\u901a\u77e5&#xff08;\u9ad8\u4f18\u5148\u7ea7&#xff09;  <\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\">Alert<\/span> <span class=\"token function\">BuildAlert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">MetricData<\/span> data<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Alert<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            Level <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">.<\/span>Severity<span class=\"token punctuation\">,<\/span><br \/>\n            Message <span class=\"token operator\">&#061;<\/span> <span class=\"token interpolation-string\"><span class=\"token string\">$&#034;\u6307\u6807<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">data<span class=\"token punctuation\">.<\/span>Name<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\u8d85\u8fc7\u9608\u503c&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">data<span class=\"token punctuation\">.<\/span>Value<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n            Timestamp <span class=\"token operator\">&#061;<\/span> DateTime<span class=\"token punctuation\">.<\/span>UtcNow<br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u5f02\u6b65\/\u540c\u6b65\u53cc\u901a\u9053&#xff1a;\u7d27\u6025\u544a\u8b66\u540c\u6b65\u53d1\u9001&#xff0c;\u666e\u901a\u544a\u8b66\u5f02\u6b65\u5904\u7406<\/li>\n<li>\u4f01\u4e1a\u7ea7\u9677\u9631&#xff1a;<span class=\"token comment\">\/\/ \u907f\u514d\u5355\u70b9\u6545\u969c&#xff1a;\u4f7f\u7528\u5206\u5e03\u5f0f\u961f\u5217&#xff08;\u5982RabbitMQ\/Kafka&#xff09;  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DistributedAlertQueue<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IAlertQueue<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IProducer<\/span> _producer<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">DistributedAlertQueue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IConfiguration<\/span> config<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _producer <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">RabbitMQProducer<\/span><span class=\"token punctuation\">(<\/span>config<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;RabbitMQ:ConnectionString&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">Enqueue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> _producer<span class=\"token punctuation\">.<\/span><span class=\"token function\">Publish<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u53d1\u5e03\u5230\u5206\u5e03\u5f0f\u961f\u5217  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h5>\u9700\u6c422&#xff1a;\u53ef\u6269\u5c55\u6027&#xff08;\u652f\u6301\u90ae\u4ef6\/SMS\/Slack\u7b49\u591a\u901a\u9053\u901a\u77e5&#xff09;<\/h5>\n<p>\u573a\u666f\u9700\u6c42&#xff1a; \u201c\u4f60\u7684\u901a\u77e5\u65b9\u5f0f\u50cf&#034;\u77f3\u5668\u65f6\u4ee3\u201d&#xff1a;\u2018\u53ea\u80fd\u53d1\u90ae\u4ef6&#xff0c;\u4f46\u51cc\u6668\u4e09\u70b9\u8c01\u4f1a\u770b\u90ae\u7bb1&#xff1f;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u901a\u77e5\u7f51\u5173\u6838\u5fc3  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MultiChannelNotifier<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IAlertNotifier<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IEnumerable<span class=\"token punctuation\">&lt;<\/span>INotificationChannel<span class=\"token punctuation\">&gt;<\/span><\/span> _channels<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">MultiChannelNotifier<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IEnumerable<span class=\"token punctuation\">&lt;<\/span>INotificationChannel<span class=\"token punctuation\">&gt;<\/span><\/span> channels<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _channels <span class=\"token operator\">&#061;<\/span> channels<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token comment\">\/\/ &#x1f525; \u6839\u636e\u7b56\u7565\u9009\u62e9\u901a\u9053  <\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">Send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> channel <span class=\"token keyword\">in<\/span> _channels<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>channel<span class=\"token punctuation\">.<\/span><span class=\"token function\">ShouldNotify<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u7b56\u7565\u5224\u65ad&#xff08;\u5982\u767d\u5929\u53d1\u90ae\u4ef6&#xff0c;\u591c\u95f4\u53d1\u77ed\u4fe1&#xff09;  <\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">await<\/span> channel<span class=\"token punctuation\">.<\/span><span class=\"token function\">Send<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u5177\u4f53\u901a\u9053\u5b9e\u73b0&#xff08;\u90ae\u4ef6&#xff09;  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EmailChannel<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">INotificationChannel<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">SmtpClient<\/span> _client<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">EmailChannel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IConfiguration<\/span> config<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _client <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">SmtpClient<\/span><span class=\"token punctuation\">(<\/span>config<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;Smtp:Host&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/ &#8230;  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">ShouldNotify<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> alert<span class=\"token punctuation\">.<\/span>Level <span class=\"token operator\">&#061;&#061;<\/span> AlertLevel<span class=\"token punctuation\">.<\/span>Critical <span class=\"token operator\">||<\/span><br \/>\n               alert<span class=\"token punctuation\">.<\/span>Timestamp<span class=\"token punctuation\">.<\/span>Hour <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">9<\/span> <span class=\"token operator\">&amp;&amp;<\/span> alert<span class=\"token punctuation\">.<\/span>Timestamp<span class=\"token punctuation\">.<\/span>Hour <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u767d\u5929\u53d1\u90ae\u4ef6  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">Send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> _client<span class=\"token punctuation\">.<\/span><span class=\"token function\">SendMailAsync<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token string\">&#034;alert&#064;example.com&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;ops&#064;example.com&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token interpolation-string\"><span class=\"token string\">$&#034;\u7d27\u6025\u544a\u8b66&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">alert<span class=\"token punctuation\">.<\/span>Message<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n            alert<span class=\"token punctuation\">.<\/span>DetailedDescription<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u7b56\u7565\u9a71\u52a8&#xff1a;\u901a\u8fc7ShouldNotify\u65b9\u6cd5\u5b9e\u73b0\u52a8\u6001\u8def\u7531<\/li>\n<li>\u4f01\u4e1a\u7ea7\u6269\u5c55\u70b9&#xff1a;<span class=\"token comment\">\/\/ \u96c6\u6210Slack\u901a\u9053  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">SlackChannel<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">INotificationChannel<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">SlackWebhookClient<\/span> _client<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">SlackChannel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IConfiguration<\/span> config<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _client <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">SlackWebhookClient<\/span><span class=\"token punctuation\">(<\/span>config<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;Slack:WebhookUrl&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">ShouldNotify<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> alert<span class=\"token punctuation\">.<\/span>Level <span class=\"token operator\">&#061;&#061;<\/span> AlertLevel<span class=\"token punctuation\">.<\/span>Critical <span class=\"token operator\">||<\/span><br \/>\n               alert<span class=\"token punctuation\">.<\/span>Timestamp<span class=\"token punctuation\">.<\/span>Hour <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">9<\/span> <span class=\"token operator\">||<\/span> alert<span class=\"token punctuation\">.<\/span>Timestamp<span class=\"token punctuation\">.<\/span>Hour <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u591c\u95f4\u53d1Slack  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">Send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> _client<span class=\"token punctuation\">.<\/span><span class=\"token function\">PostAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">SlackMessage<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            Text <span class=\"token operator\">&#061;<\/span> <span class=\"token interpolation-string\"><span class=\"token string\">$&#034;*\u7d27\u6025\u544a\u8b66*&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">alert<span class=\"token punctuation\">.<\/span>Message<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n            Attachments <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token function\">BuildAttachment<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h5>\u75db\u70b9\u6848\u4f8b&#xff1a;\u544a\u8b66\u98ce\u66b4\u5bfc\u81f4&#034;\u8b66\u62a5\u75b2\u52b3&#034;&#xff08;\u5173\u952e\u95ee\u9898\u88ab\u6df9\u6ca1&#xff09;<\/h5>\n<p>\u540d\u573a\u9762&#xff1a; \u201c\u4f60\u7684\u544a\u8b66\u7cfb\u7edf\u50cf&#034;\u5c16\u53eb\u72c2\u9b54\u201d&#xff1a;\u2018\u6bcf\u79d2100\u6761CPU\u8fc7\u8f7d\u544a\u8b66&#xff0c;\u4f46\u6ca1\u4eba\u6ce8\u610f\u5230\u786c\u76d8\u6b63\u5728\u5192\u70df&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u667a\u80fd\u964d\u566a\u6a21\u5757  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">NoiseReductionFilter<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IAlertRepository<\/span> _repository<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> AlertState<span class=\"token punctuation\">&gt;<\/span><\/span> _stateCache <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> AlertState<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">NoiseReductionFilter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IAlertRepository<\/span> repository<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _repository <span class=\"token operator\">&#061;<\/span> repository<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token comment\">\/\/ &#x1f525; \u8fc7\u6ee4\u91cd\u590d\u544a\u8b66  <\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">ShouldSuppress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> key <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">GetAlertKey<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_stateCache<span class=\"token punctuation\">.<\/span><span class=\"token function\">TryGetValue<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">out<\/span> <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> state<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">.<\/span>LastSent<span class=\"token punctuation\">.<\/span><span class=\"token function\">AddSeconds<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">60<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> DateTime<span class=\"token punctuation\">.<\/span>UtcNow<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#x1f525; 60\u79d2\u5185\u91cd\u590d  <\/span><br \/>\n                <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>state<span class=\"token punctuation\">.<\/span>SuppressionCount <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u8fde\u7eed3\u6b21\u89e6\u53d1\u81ea\u52a8\u5347\u7ea7  <\/span><br \/>\n                <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u5f3a\u5236\u53d1\u9001\u5347\u7ea7\u544a\u8b66  <\/span><br \/>\n        <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>        _stateCache<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">AlertState<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            LastSent <span class=\"token operator\">&#061;<\/span> DateTime<span class=\"token punctuation\">.<\/span>UtcNow<span class=\"token punctuation\">,<\/span><br \/>\n            SuppressionCount <span class=\"token operator\">&#061;<\/span> state<span class=\"token punctuation\">?.<\/span>SuppressionCount <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">??<\/span> <span class=\"token number\">1<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> <span class=\"token function\">GetAlertKey<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token interpolation-string\"><span class=\"token string\">$&#034;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">alert<span class=\"token punctuation\">.<\/span>MetricName<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">_<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">alert<span class=\"token punctuation\">.<\/span>ResourceId<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u552f\u4e00\u6807\u8bc6  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u9632\u6296&#xff08;Debounce&#xff09;&#xff1a;\u907f\u514d\u9ad8\u9891\u91cd\u590d\u544a\u8b66<\/li>\n<li>\u4f01\u4e1a\u7ea7\u9677\u9631&#xff1a;<span class=\"token comment\">\/\/ \u5206\u5e03\u5f0f\u72b6\u6001\u7f13\u5b58&#xff08;\u4f7f\u7528Redis&#xff09;  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DistributedNoiseFilter<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">NoiseReductionFilter<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IDistributedCache<\/span> _cache<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">DistributedNoiseFilter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IDistributedCache<\/span> cache<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _cache <span class=\"token operator\">&#061;<\/span> cache<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">override<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">ShouldSuppress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> key <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">GetAlertKey<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> state <span class=\"token operator\">&#061;<\/span> _cache<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">Get<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>AlertState<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u4eceRedis\u8bfb\u53d6\u72b6\u6001  <\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ &#8230;  <\/span><br \/>\n        _cache<span class=\"token punctuation\">.<\/span><span class=\"token function\">Set<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> updatedState<span class=\"token punctuation\">,<\/span> TimeSpan<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromMinutes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u7f13\u5b58\u72b6\u6001  <\/span><br \/>\n        <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h4>\u6b63\u6587 &#8211; \u7b2c\u4e8c\u8282&#xff1a;C#\u544a\u8b66\u7cfb\u7edf\u5b9e\u6218\u67b6\u6784<\/h4>\n<hr \/>\n<h5>\u67b6\u67841&#xff1a;\u5206\u5e03\u5f0f\u544a\u8b66\u7ba1\u9053&#xff08;\u4ece\u6570\u636e\u91c7\u96c6\u5230\u901a\u77e5\u7684\u5168\u94fe\u8def\u8bbe\u8ba1&#xff09;<\/h5>\n<p>\u573a\u666f\u9700\u6c42&#xff1a; \u201c\u4f60\u7684\u544a\u8b66\u7ba1\u9053\u50cf&#034;\u5355\u884c\u9053\u201d&#xff1a;\u2018\u5fae\u670d\u52a1\u67b6\u6784\u4e0b&#xff0c;\u544a\u8b66\u6d88\u606f\u5728\u4e0d\u540c\u8282\u70b9\u95f4&#034;\u8ff7\u8def&#034;&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u5206\u5e03\u5f0f\u544a\u8b66\u7ba1\u9053\u67b6\u6784  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DistributedAlertPipeline<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IAlertRouter<\/span> _router<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IAlertProcessor<\/span> _processor<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IAlertPublisher<\/span> _publisher<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">DistributedAlertPipeline<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token class-name\">IAlertRouter<\/span> router<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token class-name\">IAlertProcessor<\/span> processor<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token class-name\">IAlertPublisher<\/span> publisher<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _router <span class=\"token operator\">&#061;<\/span> router<span class=\"token punctuation\">;<\/span><br \/>\n        _processor <span class=\"token operator\">&#061;<\/span> processor<span class=\"token punctuation\">;<\/span><br \/>\n        _publisher <span class=\"token operator\">&#061;<\/span> publisher<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token comment\">\/\/ &#x1f525; \u5904\u7406\u544a\u8b66\u6d41  <\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">ProcessAlertStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> alert <span class=\"token keyword\">in<\/span> _router<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> processed <span class=\"token operator\">&#061;<\/span> _processor<span class=\"token punctuation\">.<\/span><span class=\"token function\">Enrich<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u8865\u5145\u5143\u6570\u636e&#xff08;\u5982\u4e3b\u673a\u540d\u3001\u8c03\u7528\u94fe&#xff09;  <\/span><br \/>\n            <span class=\"token keyword\">await<\/span> _publisher<span class=\"token punctuation\">.<\/span><span class=\"token function\">Publish<\/span><span class=\"token punctuation\">(<\/span>processed<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u53d1\u5e03\u5230\u901a\u77e5\u7f51\u5173  <\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u544a\u8b66\u8def\u7531\u5b9e\u73b0&#xff08;\u57fa\u4e8eKafka&#xff09;  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">KafkaAlertRouter<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IAlertRouter<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">KafkaConsumer<\/span> _consumer<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">KafkaAlertRouter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IConfiguration<\/span> config<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _consumer <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">KafkaConsumer<\/span><span class=\"token punctuation\">(<\/span>config<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;Kafka:BootstrapServers&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">IAsyncEnumerable<span class=\"token punctuation\">&lt;<\/span>Alert<span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">GetStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> _consumer<span class=\"token punctuation\">.<\/span><span class=\"token function\">Subscribe<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;alert-topic&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span><span class=\"token function\">Select<\/span><span class=\"token punctuation\">(<\/span>message <span class=\"token operator\">&#061;&gt;<\/span> JsonConvert<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">DeserializeObject<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>Alert<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">.<\/span>Value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u6d41\u5904\u7406&#xff1a;\u4f7f\u7528Kafka\u6216Azure Event Hubs\u5b9e\u73b0\u9ad8\u541e\u5410<\/li>\n<li>\u4f01\u4e1a\u7ea7\u4f18\u52bf&#xff1a;<span class=\"token comment\">\/\/ \u544a\u8b66\u5143\u6570\u636e\u589e\u5f3a  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AlertProcessor<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IAlertProcessor<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IHostMetadata<\/span> _host<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">Alert<\/span> <span class=\"token function\">Enrich<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        alert<span class=\"token punctuation\">.<\/span>Hostname <span class=\"token operator\">&#061;<\/span> _host<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetHostname<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        alert<span class=\"token punctuation\">.<\/span>Environment <span class=\"token operator\">&#061;<\/span> _host<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetEnvironment<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u6807\u8bb0\u751f\u4ea7\/\u6d4b\u8bd5\u73af\u5883  <\/span><br \/>\n        <span class=\"token keyword\">return<\/span> alert<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h5>\u67b6\u67842&#xff1a;\u667a\u80fd\u964d\u566a\u673a\u5236&#xff08;\u8fc7\u6ee4\u8bef\u62a5&#xff0c;\u805a\u7126\u5173\u952e\u95ee\u9898&#xff09;<\/h5>\n<p>\u51b7\u77e5\u8bc6&#xff1a; \u201c\u4f60\u7684\u544a\u8b66\u7cfb\u7edf\u50cf&#034;\u76f2\u4eba\u6478\u8c61\u201d&#xff1a;\u2018\u65e0\u6cd5\u533a\u5206&#034;\u771f\u5b9e\u6545\u969c&#034;\u548c&#034;\u4e34\u65f6\u6ce2\u52a8&#034;&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u667a\u80fd\u964d\u566a\u7b56\u7565\u5f15\u64ce  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">SmartNoiseStrategy<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IAlertHistory<\/span> _history<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">IsGenuine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> recentAlerts <span class=\"token operator\">&#061;<\/span> _history<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetLastHourAlerts<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">.<\/span>MetricName<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>recentAlerts<span class=\"token punctuation\">.<\/span>Count <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u4f4e\u9891\u544a\u8b66\u76f4\u63a5\u653e\u884c  <\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> variance <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">CalculateVariance<\/span><span class=\"token punctuation\">(<\/span>recentAlerts<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> variance <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0.8<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u65b9\u5dee\u8d85\u8fc7\u9608\u503c\u89c6\u4e3a\u771f\u5b9e\u95ee\u9898  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">double<\/span><\/span> <span class=\"token function\">CalculateVariance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IEnumerable<span class=\"token punctuation\">&lt;<\/span>Alert<span class=\"token punctuation\">&gt;<\/span><\/span> alerts<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> values <span class=\"token operator\">&#061;<\/span> alerts<span class=\"token punctuation\">.<\/span><span class=\"token function\">Select<\/span><span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&#061;&gt;<\/span> a<span class=\"token punctuation\">.<\/span>Value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">ToList<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> mean <span class=\"token operator\">&#061;<\/span> values<span class=\"token punctuation\">.<\/span><span class=\"token function\">Average<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> Math<span class=\"token punctuation\">.<\/span><span class=\"token function\">Sqrt<\/span><span class=\"token punctuation\">(<\/span>values<span class=\"token punctuation\">.<\/span><span class=\"token function\">Average<\/span><span class=\"token punctuation\">(<\/span>v <span class=\"token operator\">&#061;&gt;<\/span> Math<span class=\"token punctuation\">.<\/span><span class=\"token function\">Pow<\/span><span class=\"token punctuation\">(<\/span>v <span class=\"token operator\">&#8211;<\/span> mean<span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u6807\u51c6\u5dee  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u7edf\u8ba1\u5b66\u8fc7\u6ee4&#xff1a;\u901a\u8fc7\u65b9\u5dee\u5224\u65ad\u662f\u5426\u4e3a\u5f02\u5e38\u6ce2\u52a8<\/li>\n<li>\u4f01\u4e1a\u7ea7\u9677\u9631&#xff1a;<span class=\"token comment\">\/\/ \u907f\u514d\u5386\u53f2\u6570\u636e\u6c61\u67d3  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AlertHistory<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">ICache<\/span> _cache<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">IEnumerable<span class=\"token punctuation\">&lt;<\/span>Alert<span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">GetLastHourAlerts<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> metric<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> key <span class=\"token operator\">&#061;<\/span> <span class=\"token interpolation-string\"><span class=\"token string\">$&#034;alert_history_<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">metric<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> _cache<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">Get<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>List<span class=\"token punctuation\">&lt;<\/span>Alert<span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">??<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">List<span class=\"token punctuation\">&lt;<\/span>Alert<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Record<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> key <span class=\"token operator\">&#061;<\/span> <span class=\"token interpolation-string\"><span class=\"token string\">$&#034;alert_history_<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">alert<span class=\"token punctuation\">.<\/span>MetricName<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> list <span class=\"token operator\">&#061;<\/span> _cache<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">Get<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>List<span class=\"token punctuation\">&lt;<\/span>Alert<span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">??<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">List<span class=\"token punctuation\">&lt;<\/span>Alert<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _cache<span class=\"token punctuation\">.<\/span><span class=\"token function\">Set<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> list<span class=\"token punctuation\">,<\/span> TimeSpan<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromHours<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u4ec5\u4fdd\u75591\u5c0f\u65f6\u6570\u636e  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h5>\u67b6\u67843&#xff1a;\u591a\u79df\u6237\u652f\u6301&#xff08;\u4e0d\u540c\u56e2\u961f\/\u73af\u5883\u7684\u544a\u8b66\u7b56\u7565\u9694\u79bb&#xff09;<\/h5>\n<p>\u573a\u666f\u9700\u6c42&#xff1a; \u201c\u4f60\u7684\u544a\u8b66\u7b56\u7565\u50cf&#034;\u4e00\u5200\u5207\u201d&#xff1a;\u2018\u5f00\u53d1\u73af\u5883\u7684\u8bef\u62a5\u6df9\u6ca1\u4e86\u751f\u4ea7\u73af\u5883\u7684\u7d27\u6025\u8b66\u62a5&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u591a\u79df\u6237\u914d\u7f6e  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TenantAwareAlertProcessor<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">ITenantResolver<\/span> _tenantResolver<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IAlertConfigStore<\/span> _configStore<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Process<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> tenant <span class=\"token operator\">&#061;<\/span> _tenantResolver<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetCurrentTenant<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u4ece\u8bf7\u6c42\u5934\/\u4e0a\u4e0b\u6587\u83b7\u53d6  <\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> config <span class=\"token operator\">&#061;<\/span> _configStore<span class=\"token punctuation\">.<\/span><span class=\"token function\">Get<\/span><span class=\"token punctuation\">(<\/span>tenant<span class=\"token punctuation\">.<\/span>Id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>config<span class=\"token punctuation\">.<\/span>Disabled<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u79df\u6237\u7981\u7528\u544a\u8b66  <\/span><br \/>\n            <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">.<\/span>Level <span class=\"token operator\">&lt;<\/span> config<span class=\"token punctuation\">.<\/span>MinimumSeverity<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u7b56\u7565\u8fc7\u6ee4  <\/span><br \/>\n            <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        <span class=\"token comment\">\/\/ \u7ee7\u7eed\u5904\u7406&#8230;  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u79df\u6237\u914d\u7f6e\u5b58\u50a8  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AlertConfigStore<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IAlertConfigStore<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IConfiguration<\/span> _config<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">AlertConfig<\/span> <span class=\"token function\">Get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> tenantId<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> _config<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetSection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;Tenants:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">tenantId<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:AlertConfig&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">Get<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>AlertConfig<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u7ec6\u7c92\u5ea6\u63a7\u5236&#xff1a;\u6bcf\u4e2a\u79df\u6237\u53ef\u914d\u7f6e\u544a\u8b66\u7ea7\u522b\u3001\u901a\u77e5\u901a\u9053\u7b49<\/li>\n<li>\u4f01\u4e1a\u7ea7\u4f18\u52bf&#xff1a;<span class=\"token comment\">\/\/ \u96c6\u6210\u5230ASP.NET Core\u4e2d\u95f4\u4ef6  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TenantAlertMiddleware<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">RequestDelegate<\/span> _next<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">ITenantResolver<\/span> _resolver<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">Invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpContext<\/span> context<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> tenant <span class=\"token operator\">&#061;<\/span> _resolver<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetTenantFromRequest<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">.<\/span>Request<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>tenant <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">UnauthorizedAccessException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u672a\u8bc6\u522b\u79df\u6237&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        <span class=\"token comment\">\/\/ \u8bbe\u7f6e\u79df\u6237\u6807\u8bc6\u5230\u4e0a\u4e0b\u6587\u4e2d  <\/span><br \/>\n        <span class=\"token keyword\">await<\/span> <span class=\"token function\">_next<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h4>\u6b63\u6587 &#8211; \u7b2c\u4e09\u8282&#xff1a;\u6838\u5fc3\u6a21\u5757\u6df1\u5ea6\u89e3\u6790<\/h4>\n<hr \/>\n<h5>\u6a21\u57571&#xff1a;\u544a\u8b66\u89c4\u5219\u5f15\u64ce&#xff08;\u52a8\u6001\u914d\u7f6e\u544a\u8b66\u6761\u4ef6&#xff09;<\/h5>\n<p>\u573a\u666f\u9700\u6c42&#xff1a; \u201c\u4f60\u7684\u544a\u8b66\u89c4\u5219\u50cf&#034;\u77f3\u677f\u523b\u5b57\u201d&#xff1a;\u2018\u65e0\u6cd5\u6839\u636e\u4e1a\u52a1\u9700\u6c42\u5b9e\u65f6\u8c03\u6574\u9608\u503c&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u52a8\u6001\u89c4\u5219\u5f15\u64ce  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DynamicRuleEngine<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IRuleStore<\/span> _ruleStore<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">ShouldAlert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">MetricData<\/span> data<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> rules <span class=\"token operator\">&#061;<\/span> _ruleStore<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetRules<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">.<\/span>MetricName<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> rule <span class=\"token keyword\">in<\/span> rules<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>rule<span class=\"token punctuation\">.<\/span><span class=\"token function\">IsMatch<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u89c4\u5219\u63a5\u53e3  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">IRule<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">IsMatch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">MetricData<\/span> data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u5177\u4f53\u89c4\u5219\u5b9e\u73b0&#xff08;\u9608\u503c\u89c4\u5219&#xff09;  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ThresholdRule<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IRule<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">double<\/span><\/span> Threshold <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> ComparisonOperator <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token comment\">\/\/ &#034;&gt;&#034;, &#034;&lt;&#034;, &#034;&gt;&#061;&#034;, etc.  <\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">IsMatch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">MetricData<\/span> data<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> Comparison<span class=\"token punctuation\">.<\/span><span class=\"token function\">Compare<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">.<\/span>Value<span class=\"token punctuation\">,<\/span> Threshold<span class=\"token punctuation\">,<\/span> ComparisonOperator<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u52a8\u6001\u52a0\u8f7d&#xff1a;\u901a\u8fc7\u914d\u7f6e\u4e2d\u5fc3&#xff08;\u5982Consul\/APIServer&#xff09;\u5b9e\u65f6\u66f4\u65b0\u89c4\u5219<\/li>\n<li>\u4f01\u4e1a\u7ea7\u6269\u5c55&#xff1a;<span class=\"token comment\">\/\/ \u4ece\u914d\u7f6e\u4e2d\u5fc3\u52a0\u8f7d\u89c4\u5219  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ConfigCenterRuleStore<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IRuleStore<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IConfigClient<\/span> _client<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">IEnumerable<span class=\"token punctuation\">&lt;<\/span>IRule<span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">GetRules<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> metricName<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> config <span class=\"token operator\">&#061;<\/span> _client<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetConfig<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;alerts\/<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">metricName<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> config<span class=\"token punctuation\">.<\/span>Rules<span class=\"token punctuation\">.<\/span><span class=\"token function\">Select<\/span><span class=\"token punctuation\">(<\/span>r <span class=\"token operator\">&#061;&gt;<\/span> RuleFactory<span class=\"token punctuation\">.<\/span><span class=\"token function\">Create<\/span><span class=\"token punctuation\">(<\/span>r<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u52a8\u6001\u5b9e\u4f8b\u5316\u89c4\u5219  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h5>\u6a21\u57572&#xff1a;\u901a\u77e5\u7f51\u5173&#xff08;\u5f02\u6b65\u53d1\u9001&#xff0c;\u4fdd\u969c\u9ad8\u5e76\u53d1&#xff09;<\/h5>\n<p>\u540d\u573a\u9762&#xff1a; \u201c\u4f60\u7684\u901a\u77e5\u901a\u9053\u50cf&#034;\u5355\u7ebf\u7a0b\u201d&#xff1a;\u2018\u6bcf\u79d2100\u6761\u544a\u8b66\u5bfc\u81f4\u901a\u77e5\u670d\u52a1\u5d29\u6e83&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u5f02\u6b65\u901a\u77e5\u7f51\u5173  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AsyncNotifier<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IAlertNotifier<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IBackgroundTaskQueue<\/span> _queue<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">Send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> _queue<span class=\"token punctuation\">.<\/span><span class=\"token function\">Enqueue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _notifier<span class=\"token punctuation\">.<\/span><span class=\"token function\">Send<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u5f02\u6b65\u6267\u884c  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u80cc\u666f\u4efb\u52a1\u961f\u5217\u5b9e\u73b0  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">BackgroundTaskQueue<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IBackgroundTaskQueue<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">ConcurrentQueue<span class=\"token punctuation\">&lt;<\/span>Func<span class=\"token punctuation\">&lt;<\/span>Task<span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> _queue <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">ConcurrentQueue<span class=\"token punctuation\">&lt;<\/span>Func<span class=\"token punctuation\">&lt;<\/span>Task<span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">SemaphoreSlim<\/span> _signal <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">SemaphoreSlim<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u5e76\u53d1\u9650\u5236  <\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">Enqueue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Func<span class=\"token punctuation\">&lt;<\/span>Task<span class=\"token punctuation\">&gt;<\/span><\/span> workItem<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _queue<span class=\"token punctuation\">.<\/span><span class=\"token function\">Enqueue<\/span><span class=\"token punctuation\">(<\/span>workItem<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> _signal<span class=\"token punctuation\">.<\/span><span class=\"token function\">Release<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u901a\u77e5\u6d88\u8d39\u8005  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">Process<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">await<\/span> _signal<span class=\"token punctuation\">.<\/span><span class=\"token function\">WaitAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_queue<span class=\"token punctuation\">.<\/span><span class=\"token function\">TryDequeue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">out<\/span> <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> workItem<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token keyword\">await<\/span> <span class=\"token function\">workItem<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u6267\u884c\u4efb\u52a1  <\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u9650\u6d41\u4fdd\u62a4&#xff1a;\u901a\u8fc7SemaphoreSlim\u63a7\u5236\u5e76\u53d1\u91cf<\/li>\n<li>\u4f01\u4e1a\u7ea7\u9677\u9631&#xff1a;<span class=\"token comment\">\/\/ \u96c6\u6210\u5230ASP.NET Core\u5bbf\u4e3b\u670d\u52a1  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">NotifierHostedService<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IHostedService<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IBackgroundTaskQueue<\/span> _queue<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">StartAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">CancellationToken<\/span> cancellationToken<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> _queue<span class=\"token punctuation\">.<\/span><span class=\"token function\">Process<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u542f\u52a8\u540e\u53f0\u5904\u7406  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">StopAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">CancellationToken<\/span> cancellationToken<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> Task<span class=\"token punctuation\">.<\/span>CompletedTask<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h5>\u6a21\u57573&#xff1a;\u544a\u8b66\u964d\u7ea7\u7cfb\u7edf&#xff08;\u7194\u65ad\u673a\u5236&#xff0c;\u9632\u6b62\u96ea\u5d29\u6548\u5e94&#xff09;<\/h5>\n<p>\u573a\u666f\u9700\u6c42&#xff1a; \u201c\u4f60\u7684\u544a\u8b66\u7cfb\u7edf\u50cf&#034;\u591a\u7c73\u8bfa\u9aa8\u724c\u201d&#xff1a;\u2018\u901a\u77e5\u670d\u52a1\u6545\u969c\u5bfc\u81f4\u6574\u4e2a\u544a\u8b66\u94fe\u8def\u5d29\u6e83&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u7194\u65ad\u964d\u7ea7\u7b56\u7565  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">CircuitBreakerNotifier<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IAlertNotifier<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IAlertNotifier<\/span> _notifier<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">CircuitBreaker<\/span> _circuitBreaker<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">CircuitBreakerNotifier<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token class-name\">IAlertNotifier<\/span> notifier<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token class-name\">CircuitBreaker<\/span> circuitBreaker<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _notifier <span class=\"token operator\">&#061;<\/span> notifier<span class=\"token punctuation\">;<\/span><br \/>\n        _circuitBreaker <span class=\"token operator\">&#061;<\/span> circuitBreaker<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">Send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_circuitBreaker<span class=\"token punctuation\">.<\/span>IsOpen<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u7194\u65ad\u72b6\u6001\u4e0d\u53d1\u9001  <\/span><br \/>\n            <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        <span class=\"token keyword\">try<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">await<\/span> _notifier<span class=\"token punctuation\">.<\/span><span class=\"token function\">Send<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            _circuitBreaker<span class=\"token punctuation\">.<\/span><span class=\"token function\">Success<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u8bb0\u5f55\u6210\u529f  <\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Exception<\/span> ex<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            _circuitBreaker<span class=\"token punctuation\">.<\/span><span class=\"token function\">Failure<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u8bb0\u5f55\u5931\u8d25&#xff0c;\u89e6\u53d1\u7194\u65ad  <\/span><br \/>\n            <span class=\"token keyword\">throw<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u7194\u65ad\u5668\u5b9e\u73b0  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">CircuitBreaker<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> _failureThreshold<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">TimeSpan<\/span> _resetTimeout<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> _failureCount <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DateTime<\/span> _lastFailureTime<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> IsOpen <span class=\"token operator\">&#061;&gt;<\/span><br \/>\n        _failureCount <span class=\"token operator\">&gt;&#061;<\/span> _failureThreshold <span class=\"token operator\">&amp;&amp;<\/span><br \/>\n        DateTime<span class=\"token punctuation\">.<\/span>UtcNow <span class=\"token operator\">&#8211;<\/span> _lastFailureTime <span class=\"token operator\">&lt;<\/span> _resetTimeout<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Success<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _failureCount <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Failure<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _failureCount<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _lastFailureTime <span class=\"token operator\">&#061;<\/span> DateTime<span class=\"token punctuation\">.<\/span>UtcNow<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u7194\u65ad\u7b56\u7565&#xff1a;\u8fbe\u5230\u5931\u8d25\u9608\u503c\u540e\u8fdb\u5165&#034;\u534a\u5f00&#034;\u72b6\u6001&#xff0c;\u9010\u6b65\u6062\u590d<\/li>\n<li>\u4f01\u4e1a\u7ea7\u4f18\u52bf&#xff1a;<span class=\"token comment\">\/\/ \u96c6\u6210\u5230\u4f9d\u8d56\u6ce8\u5165  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Startup<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">ConfigureServices<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IServiceCollection<\/span> services<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        services<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">AddSingleton<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>ICircuitBreaker<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">CircuitBreaker<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> TimeSpan<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromSeconds<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        services<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">AddScoped<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>IAlertNotifier<span class=\"token punctuation\">,<\/span> CircuitBreakerNotifier<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h4>\u6b63\u6587 &#8211; \u7b2c\u56db\u8282&#xff1a;\u4f01\u4e1a\u7ea7\u9ad8\u7ea7\u573a\u666f<\/h4>\n<hr \/>\n<h5>\u6848\u4f8b1&#xff1a;\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\u7684&#034;\u7194\u65ad\u544a\u8b66\u98ce\u66b4&#034;&#xff08;\u907f\u514d\u7ea7\u8054\u6545\u969c&#xff09;<\/h5>\n<p>\u573a\u666f\u9700\u6c42&#xff1a; \u201c\u4f60\u7684\u544a\u8b66\u7cfb\u7edf\u50cf&#034;\u591a\u7c73\u8bfa\u9aa8\u724c\u201d&#xff1a;\u2018\u4e00\u4e2a\u670d\u52a1\u6545\u969c\u5bfc\u81f4\u5168\u94fe\u8def\u544a\u8b66\u96ea\u5d29&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u670d\u52a1\u7ea7\u7194\u65ad\u544a\u8b66  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ServiceCircuitBreaker<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> CircuitBreaker<span class=\"token punctuation\">&gt;<\/span><\/span> _breakers <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> CircuitBreaker<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">IsServiceHealthy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> serviceId<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>_breakers<span class=\"token punctuation\">.<\/span><span class=\"token function\">TryGetValue<\/span><span class=\"token punctuation\">(<\/span>serviceId<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">out<\/span> <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> breaker<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u9ed8\u8ba4\u5065\u5eb7  <\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">!<\/span>breaker<span class=\"token punctuation\">.<\/span>IsOpen<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">RecordFailure<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> serviceId<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>_breakers<span class=\"token punctuation\">.<\/span><span class=\"token function\">ContainsKey<\/span><span class=\"token punctuation\">(<\/span>serviceId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            _breakers<span class=\"token punctuation\">[<\/span>serviceId<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">CircuitBreaker<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> TimeSpan<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromSeconds<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        _breakers<span class=\"token punctuation\">[<\/span>serviceId<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">Failure<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u96c6\u6210\u5230\u544a\u8b66\u89c4\u5219  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ServiceHealthRule<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IRule<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">ServiceCircuitBreaker<\/span> _breaker<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">IsMatch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">MetricData<\/span> data<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">!<\/span>_breaker<span class=\"token punctuation\">.<\/span><span class=\"token function\">IsServiceHealthy<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">.<\/span>ServiceId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u670d\u52a1\u7194\u65ad\u65f6\u89e6\u53d1\u544a\u8b66  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u670d\u52a1\u7ea7\u9694\u79bb&#xff1a;\u6bcf\u4e2a\u670d\u52a1\u72ec\u7acb\u7194\u65ad\u72b6\u6001<\/li>\n<li>\u4f01\u4e1a\u7ea7\u9677\u9631&#xff1a;<span class=\"token comment\">\/\/ \u907f\u514d\u5355\u70b9\u6545\u969c&#xff1a;\u4f7f\u7528\u5206\u5e03\u5f0f\u72b6\u6001\u5b58\u50a8&#xff08;\u5982Redis&#xff09;  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DistributedServiceCircuitBreaker<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">ServiceCircuitBreaker<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IDistributedCache<\/span> _cache<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">override<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">IsServiceHealthy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> serviceId<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> state <span class=\"token operator\">&#061;<\/span> _cache<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">Get<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>ServiceState<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>serviceId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> state<span class=\"token punctuation\">?.<\/span>Healthy <span class=\"token operator\">??<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">override<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">RecordFailure<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> serviceId<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> state <span class=\"token operator\">&#061;<\/span> _cache<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">Get<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>ServiceState<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>serviceId<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">??<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">ServiceState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        state<span class=\"token punctuation\">.<\/span>Failures<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _cache<span class=\"token punctuation\">.<\/span><span class=\"token function\">Set<\/span><span class=\"token punctuation\">(<\/span>serviceId<span class=\"token punctuation\">,<\/span> state<span class=\"token punctuation\">,<\/span> TimeSpan<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromSeconds<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u5206\u5e03\u5f0f\u8ba1\u6570  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h5>\u6848\u4f8b2&#xff1a;\u52a8\u6001\u9608\u503c\u7684&#034;\u81ea\u9002\u5e94\u544a\u8b66&#034;&#xff08;\u6839\u636e\u4e1a\u52a1\u8d1f\u8f7d\u8c03\u6574\u9608\u503c&#xff09;<\/h5>\n<p>\u51b7\u77e5\u8bc6&#xff1a; \u201c\u4f60\u7684\u9608\u503c\u50cf&#034;\u6b7b\u677f\u6559\u6761\u201d&#xff1a;\u2018\u53cc\u5341\u4e00\u671f\u95f4CPU 90%\u8d1f\u8f7d\u662f\u6b63\u5e38&#xff0c;\u4f46\u544a\u8b66\u7cfb\u7edf\u8fd8\u5728\u5c16\u53eb&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u52a8\u6001\u9608\u503c\u8ba1\u7b97  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AdaptiveThresholdCalculator<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">ITimeSeriesDB<\/span> _db<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">double<\/span><\/span> <span class=\"token function\">GetThreshold<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> metricName<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> history <span class=\"token operator\">&#061;<\/span> _db<span class=\"token punctuation\">.<\/span><span class=\"token function\">Query<\/span><span class=\"token punctuation\">(<\/span>metricName<span class=\"token punctuation\">,<\/span> TimeSpan<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromHours<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">24<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u53d624\u5c0f\u65f6\u6570\u636e  <\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> average <span class=\"token operator\">&#061;<\/span> history<span class=\"token punctuation\">.<\/span><span class=\"token function\">Average<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> stdDev <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">CalculateStdDev<\/span><span class=\"token punctuation\">(<\/span>history<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> average <span class=\"token operator\">&#043;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span> <span class=\"token operator\">*<\/span> stdDev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; 3\u03c3\u539f\u5219  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">double<\/span><\/span> <span class=\"token function\">CalculateStdDev<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IEnumerable<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">double<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> values<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ &#8230;  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u81ea\u9002\u5e94\u544a\u8b66\u89c4\u5219  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AdaptiveThresholdRule<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IRule<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">AdaptiveThresholdCalculator<\/span> _calculator<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">IsMatch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">MetricData<\/span> data<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> threshold <span class=\"token operator\">&#061;<\/span> _calculator<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetThreshold<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">.<\/span>MetricName<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> data<span class=\"token punctuation\">.<\/span>Value <span class=\"token operator\">&gt;<\/span> threshold<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u8d85\u8fc7\u52a8\u6001\u9608\u503c\u89e6\u53d1  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u7edf\u8ba1\u5b66\u9608\u503c&#xff1a;\u57fa\u4e8e\u5386\u53f2\u6570\u636e\u8ba1\u7b97\u52a8\u6001\u9608\u503c<\/li>\n<li>\u4f01\u4e1a\u7ea7\u4f18\u52bf&#xff1a;<span class=\"token comment\">\/\/ \u96c6\u6210\u5230\u544a\u8b66\u7ba1\u9053  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AdaptiveAlertPipeline<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">RealTimeAlertPipeline<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">override<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">InitializeRules<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        Rules<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">AdaptiveThresholdRule<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u66ff\u6362\u56fa\u5b9a\u9608\u503c\u89c4\u5219  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h5>\u6848\u4f8b3&#xff1a;\u544a\u8b66\u8ffd\u6eaf\u7cfb\u7edf&#xff08;\u4ece\u8b66\u62a5\u5230\u6839\u56e0\u5206\u6790\u7684\u5b8c\u6574\u94fe\u8def&#xff09;<\/h5>\n<p>\u573a\u666f\u9700\u6c42&#xff1a; \u201c\u4f60\u7684\u544a\u8b66\u7cfb\u7edf\u50cf&#034;\u65ad\u5934\u53f0\u201d&#xff1a;\u2018\u53ea\u77e5\u9053\u95ee\u9898\u5b58\u5728&#xff0c;\u4f46\u627e\u4e0d\u5230&#034;\u8c01\u52a8\u4e86\u6211\u7684\u6570\u636e\u5e93&#034;&#xff01;\u2019&#034;<\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u544a\u8b66\u8ffd\u6eaf\u6a21\u5757  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AlertTracer<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">ITraceStore<\/span> _traceStore<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">Trace<\/span> <span class=\"token function\">GetRootCause<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Alert<\/span> alert<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> traces <span class=\"token operator\">&#061;<\/span> _traceStore<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetTraces<\/span><span class=\"token punctuation\">(<\/span>alert<span class=\"token punctuation\">.<\/span>TraceId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u901a\u8fc7\u544a\u8b66\u4e2d\u7684TraceID\u5173\u8054  <\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> root <span class=\"token operator\">&#061;<\/span> traces<span class=\"token punctuation\">.<\/span><span class=\"token function\">FirstOrDefault<\/span><span class=\"token punctuation\">(<\/span>t <span class=\"token operator\">&#061;&gt;<\/span> t<span class=\"token punctuation\">.<\/span>IsRoot<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>root <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> root<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>        <span class=\"token comment\">\/\/ \u4f7f\u7528\u7b97\u6cd5\u5206\u6790\u8c03\u7528\u94fe  <\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token function\">AnalyzeCallChain<\/span><span class=\"token punctuation\">(<\/span>traces<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\">Trace<\/span> <span class=\"token function\">AnalyzeCallChain<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IEnumerable<span class=\"token punctuation\">&lt;<\/span>Trace<span class=\"token punctuation\">&gt;<\/span><\/span> traces<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ &#8230;  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p><span class=\"token comment\">\/\/ &#x1f525; \u544a\u8b66\u8be6\u60c5\u6269\u5c55  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EnrichedAlert<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">Alert<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> TraceId <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">List<span class=\"token punctuation\">&lt;<\/span>Trace<span class=\"token punctuation\">&gt;<\/span><\/span> RelatedTraces <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u5d4c\u5165\u8c03\u7528\u94fe\u4fe1\u606f  <\/span><br \/>\n<span class=\"token punctuation\">}<\/span>  <\/p>\n<p>\u6ce8\u91ca\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>\u5206\u5e03\u5f0f\u8ffd\u8e2a&#xff1a;\u901a\u8fc7OpenTelemetry\u6216Zipkin\u96c6\u6210\u8c03\u7528\u94fe\u6570\u636e<\/li>\n<li>\u4f01\u4e1a\u7ea7\u9677\u9631&#xff1a;<span class=\"token comment\">\/\/ \u907f\u514d\u6570\u636e\u7206\u70b8&#xff1a;\u4ec5\u5b58\u50a8\u5173\u952e\u8c03\u7528\u94fe  <\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TraceStore<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">ICache<\/span> _cache<span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">Trace<\/span> <span class=\"token function\">GetTrace<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> traceId<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> _cache<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">Get<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>Trace<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>traceId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u4ece\u5206\u5e03\u5f0f\u7f13\u5b58\u83b7\u53d6  <\/span><br \/>\n    <span class=\"token punctuation\">}<\/span>  <\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Store<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Trace<\/span> trace<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>trace<span class=\"token punctuation\">.<\/span>Level <span class=\"token operator\">&#061;&#061;<\/span> TraceLevel<span class=\"token punctuation\">.<\/span>Error<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#x1f525; \u4ec5\u5b58\u50a8\u9519\u8bef\u7ea7\u522b\u8c03\u7528\u94fe  <\/span><br \/>\n            _cache<span class=\"token punctuation\">.<\/span><span class=\"token function\">Set<\/span><span class=\"token punctuation\">(<\/span>trace<span class=\"token punctuation\">.<\/span>TraceId<span class=\"token punctuation\">,<\/span> trace<span class=\"token punctuation\">,<\/span> TimeSpan<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromDays<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr 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