{"id":89408,"date":"2026-08-02T23:24:36","date_gmt":"2026-08-02T15:24:36","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/89408.html"},"modified":"2026-08-02T23:24:36","modified_gmt":"2026-08-02T15:24:36","slug":"%e7%ac%ac%e5%9b%9b%e7%af%87%ef%bc%9a%e6%b6%88%e6%81%af%e4%b8%ba%e4%bb%80%e4%b9%88%e4%bc%9a%e9%87%8d%e5%a4%8d%e6%b6%88%e8%b4%b9%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/89408.html","title":{"rendered":"\u7b2c\u56db\u7bc7\uff1a\u6d88\u606f\u4e3a\u4ec0\u4e48\u4f1a\u91cd\u590d\u6d88\u8d39\uff1f"},"content":{"rendered":"<p>\u6d88\u606f\u4e3a\u4ec0\u4e48\u4f1a\u91cd\u590d\u6d88\u8d39&#xff1f;<\/p>\n<p>\u4e0a\u4e00\u7bc7\u6211\u4eec\u804a\u4e86\u300a\u6d88\u606f\u961f\u5217\u5982\u4f55\u4fdd\u8bc1\u6d88\u606f\u53ef\u9760\u6027&#xff1f;\u300b<\/p>\n<p>\u4e3a\u4e86\u5c3d\u53ef\u80fd\u907f\u514d\u6d88\u606f\u4e22\u5931&#xff0c;\u5927\u591a\u6570\u6d88\u606f\u961f\u5217\u90fd\u4f1a\u91c7\u7528 At Least Once&#xff08;\u81f3\u5c11\u6295\u9012\u4e00\u6b21&#xff09; \u7684\u7b56\u7565\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4&#xff1a;Broker \u5b81\u613f\u628a\u6d88\u606f\u518d\u6295\u9012\u4e00\u6b21&#xff0c;\u4e5f\u4e0d\u4f1a\u8f7b\u6613\u8ba4\u4e3a\u6d88\u606f\u5df2\u7ecf\u6d88\u8d39\u6210\u529f\u3002<\/p>\n<p>\u8fd9\u4e5f\u5e26\u6765\u4e86\u53e6\u4e00\u4e2a\u95ee\u9898\u3002\u540c\u4e00\u6761\u6d88\u606f&#xff0c;\u53ef\u80fd\u4f1a\u88ab\u6d88\u8d39\u4e24\u6b21&#xff0c;\u751a\u81f3\u66f4\u591a\u6b21\u3002<\/p>\n<p>\u4e00\u6761\u6d88\u606f&#xff0c;\u4e3a\u4ec0\u4e48\u4f1a\u6d88\u8d39\u4e24\u6b21&#xff1f;<\/p>\n<p>\u6765\u770b\u4e00\u4e2a\u6700\u7b80\u5355\u7684\u6d88\u8d39\u8005\u3002<\/p>\n<p><span class=\"token annotation punctuation\">&#064;KafkaListener<\/span><span class=\"token punctuation\">(<\/span>topics <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;order-topic&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">consume<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">OrderMessage<\/span> message<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    orderService<span class=\"token punctuation\">.<\/span><span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token punctuation\">}<\/span><\/p>\n<p>\u751f\u4ea7\u8005\u53ea\u53d1\u9001\u4e86\u4e00\u6b21\u6d88\u606f&#xff1a;kafkaTemplate.send(\u201corder-topic\u201d, orderMessage);<\/p>\n<p>\u6309\u7406\u8bf4&#xff1a;<\/p>\n<p>\u53d1\u9001\u4e00\u6b21<br \/>\n\u2193<br \/>\n\u6d88\u8d39\u4e00\u6b21<\/p>\n<p>\u7ed3\u679c\u7ebf\u4e0a\u5374\u51fa\u73b0\u4e86&#xff1a;<\/p>\n<p>\u53d1\u9001\u4e00\u6b21<br \/>\n\u2193<br \/>\n\u6d88\u8d39\u4e24\u6b21<\/p>\n<p>\u6570\u636e\u5e93\u751a\u81f3\u51fa\u73b0\u4e86\u4e24\u6761\u76f8\u540c\u7684\u6570\u636e\u3002<\/p>\n<p>id      order_no<br \/>\n1       10001<br \/>\n2       10001<\/p>\n<p>Producer \u6ca1\u6709\u91cd\u590d\u53d1\u9001\u3002Broker \u4e5f\u6ca1\u6709\u590d\u5236\u6d88\u606f\u3002<\/p>\n<p>\u90a3\u95ee\u9898\u51fa\u5728\u54ea\u91cc&#xff1f;\u4e00\u6761\u6d88\u606f&#xff0c;\u5230\u5e95\u7ecf\u5386\u4e86\u4ec0\u4e48&#xff1f;\u4e0a\u4e00\u7bc7\u6211\u4eec\u5df2\u7ecf\u753b\u8fc7\u6d88\u606f\u94fe\u8def\u3002<\/p>\n<p>Producer<br \/>\n\u2193<br \/>\nBroker<br \/>\n\u2193<br \/>\nConsumer<br \/>\n\u2193<br \/>\n\u4e1a\u52a1\u5904\u7406<br \/>\n\u2193<br \/>\n\u6d88\u8d39\u786e\u8ba4<\/p>\n<p>\u8fd9\u91cc\u771f\u6b63\u5173\u952e\u7684\u662f\u6700\u540e\u4e00\u6b65\u3002<\/p>\n<p>\u6d88\u8d39\u786e\u8ba4\u3002\u53ea\u6709 Consumer \u544a\u8bc9 Broker&#xff1a;\u8fd9\u6761\u6d88\u606f\u5df2\u7ecf\u5904\u7406\u5b8c\u6210&#xff0c;Broker \u624d\u4f1a\u628a\u5b83\u6807\u8bb0\u4e3a\u5df2\u6d88\u8d39&#xff0c;\u5982\u679c\u786e\u8ba4\u6ca1\u6709\u6210\u529f&#xff0c;Broker \u4f1a\u8ba4\u4e3a&#xff1a;\u8fd9\u6761\u6d88\u606f\u8fd8\u6ca1\u6709\u5904\u7406\u3002<\/p>\n<p>\u4e8e\u662f\u518d\u6b21\u6295\u9012&#xff0c;\u6700\u5bb9\u6613\u51fa\u73b0\u91cd\u590d\u6d88\u8d39\u7684\u573a\u666f\u3002\u5047\u8bbe\u8ba2\u5355\u6d88\u8d39\u8005\u6536\u5230\u4e00\u6761\u6d88\u606f&#xff0c;<\/p>\n<p>\u8ba2\u5355\u521b\u5efa<br \/>\n\u2193<br \/>\n\u66f4\u65b0\u6570\u636e\u5e93<br \/>\n\u2193<br \/>\n\u63d0\u4ea4\u6d88\u8d39\u786e\u8ba4<\/p>\n<p>\u6b63\u5e38\u60c5\u51b5\u4e0b&#xff0c;\u6ca1\u6709\u95ee\u9898\u3002\u4f46\u662f\u5982\u679c\u6d41\u7a0b\u53d8\u6210\u8fd9\u6837&#xff1a;<\/p>\n<p>\u8ba2\u5355\u521b\u5efa<br \/>\n\u2193<br \/>\n\u66f4\u65b0\u6570\u636e\u5e93&#xff08;\u6210\u529f&#xff09;<br \/>\n\u2193<br \/>\n\u670d\u52a1\u5668\u7a81\u7136\u5b95\u673a<br \/>\n\u2193<br \/>\nACK \u6ca1\u6709\u63d0\u4ea4<\/p>\n<p>Broker \u5e76\u4e0d\u77e5\u9053\u6570\u636e\u5e93\u5df2\u7ecf\u66f4\u65b0\u3002<\/p>\n<p>\u5b83\u53ea\u77e5\u9053&#xff1a;\u6d88\u8d39\u8005\u6ca1\u6709\u786e\u8ba4&#xff0c;\u4e8e\u662f\u6d88\u8d39\u8005\u6062\u590d\u4ee5\u540e&#xff1a;<\/p>\n<p>\u518d\u6b21\u6295\u9012<br \/>\n\u2193<br \/>\n\u518d\u6b21\u6267\u884c<\/p>\n<p>\u6570\u636e\u5e93\u5c31\u53d8\u6210&#xff1a;\u8ba2\u535510001<\/p>\n<p>\u521b\u5efa\u4e24\u6b21&#xff0c;\u91cd\u590d\u6d88\u8d39\u5c31\u662f\u8fd9\u6837\u4ea7\u751f\u7684\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u5148\u786e\u8ba4&#xff0c;\u518d\u5904\u7406\u4e1a\u52a1&#xff1f;<\/p>\n<p>\u6709\u4eba\u53ef\u80fd\u4f1a\u60f3\u5230&#xff0c;\u65e2\u7136\u786e\u8ba4\u8fd9\u4e48\u91cd\u8981\u3002<\/p>\n<p>\u662f\u4e0d\u662f\u53ef\u4ee5&#xff1a;<\/p>\n<p>\u6536\u5230\u6d88\u606f<br \/>\n\u2193<br \/>\nACK<br \/>\n\u2193<br \/>\n\u5904\u7406\u4e1a\u52a1<\/p>\n<p>\u8fd9\u6837 Broker \u5c31\u4e0d\u4f1a\u91cd\u590d\u53d1\u9001\u4e86\u3002<\/p>\n<p>\u770b\u8d77\u6765\u4e0d\u9519&#xff0c;\u5b9e\u9645\u4e0a\u95ee\u9898\u66f4\u4e25\u91cd\u3002<\/p>\n<p>\u5047\u8bbe&#xff1a;<\/p>\n<p>\u6536\u5230\u6d88\u606f<br \/>\n\u2193<br \/>\nACK \u6210\u529f<br \/>\n\u2193<br \/>\n\u7a0b\u5e8f\u5d29\u6e83<\/p>\n<p>Broker \u5df2\u7ecf\u8ba4\u4e3a\u6d88\u8d39\u5b8c\u6210&#xff0c;\u4f46\u662f\u4e1a\u52a1\u6839\u672c\u6ca1\u6709\u6267\u884c&#xff0c;\u6d88\u606f\u5f7b\u5e95\u4e22\u5931\u3002<\/p>\n<p>\u6240\u4ee5&#xff0c;ACK \u4e00\u5b9a\u8981\u653e\u5728\u4e1a\u52a1\u5904\u7406\u4e4b\u540e&#xff0c;\u8fd9\u4e5f\u662f\u7edd\u5927\u591a\u6570 MQ \u7684\u5904\u7406\u65b9\u5f0f\u3002\u4e3a\u4ec0\u4e48 MQ \u5b81\u613f\u91cd\u590d&#xff0c;\u4e5f\u4e0d\u613f\u4e22\u5931&#xff1f;\u8fd9\u91cc\u5c31\u56de\u5230\u4e86\u4e0a\u4e00\u7bc7\u8bb2\u7684\u53ef\u9760\u6027\u3002<\/p>\n<p>\u5047\u8bbe\u53ea\u6709\u4e24\u4e2a\u9009\u62e9\u3002<\/p>\n<p>\u65b9\u6848\u4e00&#xff1a;\u53ef\u80fd\u91cd\u590d\u6d88\u8d39&#xff0c;\u4f46\u662f\u4e0d\u4f1a\u4e22\u6d88\u606f<\/p>\n<p>\u65b9\u6848\u4e8c&#xff1a;\u4e0d\u4f1a\u91cd\u590d\u6d88\u8d39&#xff0c;\u4f46\u662f\u53ef\u80fd\u4e22\u6d88\u606f<\/p>\n<p>\u51e0\u4e4e\u6240\u6709 MQ \u90fd\u4f1a\u9009\u62e9\u7b2c\u4e00\u79cd\u3002<\/p>\n<p>\u539f\u56e0\u5f88\u7b80\u5355&#xff0c;\u6d88\u606f\u91cd\u590d\u4e1a\u52a1\u8fd8\u80fd\u8865\u6551\u3002<\/p>\n<p>\u6d88\u606f\u4e22\u5931&#xff0c;\u5f88\u591a\u65f6\u5019\u6839\u672c\u65e0\u6cd5\u6062\u590d\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>\u652f\u4ed8\u6210\u529f<br \/>\n\u2193<br \/>\n\u6d88\u606f\u4e22\u5931<br \/>\n\u2193<br \/>\n\u8ba2\u5355\u4e00\u76f4\u672a\u652f\u4ed8<\/p>\n<p>\u8fd9\u79cd\u95ee\u9898\u6bd4\u91cd\u590d\u6263\u4e00\u6b21\u79ef\u5206\u4e25\u91cd\u5f97\u591a\u3002\u56e0\u6b64&#xff0c;\u91cd\u590d\u6d88\u8d39&#xff0c;\u662f\u53ef\u9760\u6027\u8bbe\u8ba1\u4e3b\u52a8\u63a5\u53d7\u7684\u4e00\u79cd\u4ee3\u4ef7\u3002<\/p>\n<p>Kafka \u5982\u4f55\u5224\u65ad\u6d88\u606f\u662f\u5426\u6d88\u8d39\u6210\u529f&#xff1f;<\/p>\n<p>Kafka \u5e76\u4e0d\u4f1a\u8bb0\u5f55&#xff0c;\u8fd9\u6761\u6d88\u606f\u662f\u5426\u5df2\u7ecf\u6d88\u8d39&#xff0c;\u5b83\u8bb0\u5f55\u7684\u662f Consumer \u5f53\u524d\u6d88\u8d39\u5230\u4e86\u54ea\u4e2a Offset<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>Partition0<\/p>\n<p>offset 0<\/p>\n<p>offset 1<\/p>\n<p>offset 2<\/p>\n<p>offset 3<\/p>\n<p>\u6d88\u8d39\u8005\u5904\u7406\u5b8c\u6210&#xff1a;<\/p>\n<p>offset 0<br \/>\n\u2193<br \/>\n\u63d0\u4ea4 Offset&#061;1<\/p>\n<p>\u8868\u793a&#xff1a;0 \u5df2\u7ecf\u6d88\u8d39&#xff0c;\u4e0b\u4e00\u6b21\u4ece 1 \u5f00\u59cb<\/p>\n<p>\u5982\u679c&#xff1a;<\/p>\n<p>\u4e1a\u52a1\u6210\u529f<br \/>\n\u2193<br \/>\nOffset \u63d0\u4ea4\u5931\u8d25<\/p>\n<p>\u4e0b\u4e00\u6b21\u542f\u52a8 Kafka \u4ecd\u7136\u4f1a\u4ece&#xff1a;offset 0 \u91cd\u65b0\u6d88\u8d39\u3002<\/p>\n<p>\u6240\u4ee5&#xff1a;\u91cd\u590d\u6d88\u8d39\u5e76\u4e0d\u662f Kafka \u53c8\u4fdd\u5b58\u4e86\u4e00\u4efd\u6d88\u606f\u3002\u800c\u662f&#xff1a;\u6d88\u8d39\u8fdb\u5ea6\u6ca1\u6709\u6210\u529f\u66f4\u65b0\u3002<\/p>\n<p>RocketMQ \u53c8\u662f\u600e\u4e48\u505a\u7684&#xff1f;\u6d88\u8d39\u8005\u5904\u7406\u6210\u529f\u4ee5\u540e\u9700\u8981\u8fd4\u56de&#xff1a;<\/p>\n<p>ConsumeConcurrentlyStatus.CONSUME_SUCCESS<\/p>\n<p>\u5982\u679c\u8fd4\u56de\u5931\u8d25&#xff1a;RECONSUME_LATER &#xff0c;Broker \u4f1a\u91cd\u65b0\u6295\u9012\u3002<\/p>\n<p>\u56e0\u6b64&#xff1a;Kafka \u63d0\u4ea4\u7684\u662f Offset&#xff0c;RocketMQ \u8fd4\u56de\u7684\u662f\u6d88\u8d39\u72b6\u6001\u3002<\/p>\n<p>\u867d\u7136\u5b9e\u73b0\u65b9\u5f0f\u4e0d\u540c&#xff0c;\u4f46\u8bbe\u8ba1\u601d\u60f3\u5b8c\u5168\u4e00\u81f4\u3002\u53ea\u6709\u786e\u8ba4\u6210\u529f&#xff0c;\u6d88\u606f\u624d\u771f\u6b63\u5b8c\u6210\u6d88\u8d39\u3002<\/p>\n<p>\u5982\u4f55\u907f\u514d\u91cd\u590d\u6d88\u8d39&#xff1f;\u6d88\u606f\u961f\u5217\u65e0\u6cd5\u4fdd\u8bc1\u6d88\u606f\u53ea\u6d88\u8d39\u4e00\u6b21\u3002\u771f\u6b63\u89e3\u51b3\u91cd\u590d\u6d88\u8d39\u7684&#xff0c;\u662f\u4e1a\u52a1\u7cfb\u7edf\u3002<\/p>\n<p>\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u6709\u4e09\u79cd\u3002<\/p>\n<p>1\u3001\u552f\u4e00\u4e1a\u52a1 ID<\/p>\n<p>\u4f8b\u5982\u8ba2\u5355\u53f7&#xff0c;\u6570\u636e\u5e93\u5efa\u7acb\u552f\u4e00\u7d22\u5f15\u3002<\/p>\n<p>CREATE UNIQUE INDEX uk_order_no ON t_order(order_no);<\/p>\n<p>\u5373\u4f7f\u6d88\u606f\u91cd\u590d&#xff0c;\u7b2c\u4e8c\u6b21\u63d2\u5165\u4e5f\u4f1a\u5931\u8d25\u3002<\/p>\n<p>2\u3001\u4e1a\u52a1\u72b6\u6001\u5224\u65ad<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p><span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>order<span class=\"token punctuation\">.<\/span><span class=\"token function\">isPaid<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u53ea\u6709\u672a\u652f\u4ed8\u624d\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n<p>3\u3001\u5e42\u7b49\u8868\u6216 Redis \u53bb\u91cd<\/p>\n<p>\u5148\u8bb0\u5f55\u6d88\u606f ID&#xff0c;\u5904\u7406\u8fc7 msgId&#061;1001&#xff0c;\u518d\u6b21\u6536\u5230\u76f4\u63a5\u8fd4\u56de\u3002\u5f88\u591a\u652f\u4ed8\u7cfb\u7edf\u90fd\u4f1a\u91c7\u7528\u8fd9\u79cd\u65b9\u5f0f\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\u5f88\u96be\u505a\u5230 Exactly Once&#xff1f;<\/p>\n<p>\u5f88\u591a\u4eba\u542c\u8bf4\u8fc7 Exactly Once&#xff08;\u6070\u597d\u4e00\u6b21&#xff09;&#xff0c;\u542c\u8d77\u6765\u975e\u5e38\u5b8c\u7f8e\u3002\u5b9e\u9645\u4e0a&#xff0c;\u5b83\u7684\u5b9e\u73b0\u6210\u672c\u8fdc\u9ad8\u4e8e At Least Once\u3002\u56e0\u4e3a\u5b83\u8981\u6c42&#xff1a;<\/p>\n<p>\u6d88\u606f\u53d1\u9001<br \/>\n\u2193<br \/>\n\u6d88\u606f\u5b58\u50a8<br \/>\n\u2193<br \/>\n\u4e1a\u52a1\u6267\u884c<br \/>\n\u2193<br \/>\n\u6d88\u8d39\u786e\u8ba4<\/p>\n<p>\u6574\u4e2a\u8fc7\u7a0b\u90fd\u5fc5\u987b\u4fdd\u8bc1&#xff1a;<\/p>\n<p>\u6210\u529f\u4e00\u6b21&#xff0c;\u4e5f\u53ea\u80fd\u6210\u529f\u4e00\u6b21&#xff0c;\u8fd9\u4e0d\u4ec5\u9700\u8981 MQ 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