{"id":68257,"date":"2026-01-29T23:25:33","date_gmt":"2026-01-29T15:25:33","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/68257.html"},"modified":"2026-01-29T23:25:33","modified_gmt":"2026-01-29T15:25:33","slug":"%e5%90%8e%e7%ab%af%e5%ad%a6%e4%b9%a0%e6%97%a5%e8%ae%b01-27","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/68257.html","title":{"rendered":"\u540e\u7aef\u5b66\u4e60\u65e5\u8bb01.27"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u524d\u8a00<\/li>\n<li>\u4e00\u3001\u7f13\u5b58\u6dfb\u52a0<\/li>\n<li>\u4e8c\u3001\u7f13\u5b58\u66f4\u65b0\u7b56\u7565<\/li>\n<li>\n<ul>\n<li>1.\u5185\u5b58\u6dd8\u6c70<\/li>\n<li>2.\u8d85\u65f6\u5254\u9664<\/li>\n<li>3.\u4e3b\u52a8\u66f4\u65b0<\/li>\n<li>4.\u5c0f\u7ed3<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001\u7f13\u5b58\u7a7f\u900f<\/li>\n<li>\n<ul>\n<li>1.\u7a7a\u503c\u7f13\u5b58<\/li>\n<li>2.\u5e03\u9686\u8fc7\u6ee4<\/li>\n<li>3.\u5c0f\u7ed3<\/li>\n<\/ul>\n<\/li>\n<li>\u56db\u3001\u603b\u7ed3<\/li>\n<\/ul>\n<hr 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<img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260129152531-697b7beba2244.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h2>\u4e8c\u3001\u7f13\u5b58\u66f4\u65b0\u7b56\u7565<\/h2>\n<p>\u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42\u7f13\u5b58\u548c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u8981\u4fdd\u6301\u4e00\u81f4\u3002\u6240\u4ee5\u6570\u636e\u5e93\u6bcf\u6b21\u589e\u5220\u6539\u64cd\u4f5c\u90fd\u9700\u8981\u5bf9\u7f13\u5b58\u8fdb\u884c\u66f4\u65b0&#xff0c;\u907f\u514d\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u3002\u8fd9\u91cc\u4ece\u6570\u636e\u4e00\u81f4\u6027\u7ed3\u679c\u7684\u9ad8\u4f4e\u4ecb\u7ecd\u4e09\u79cd\u65b9\u6cd5\u3002<\/p>\n<h3>1.\u5185\u5b58\u6dd8\u6c70<\/h3>\n<p>\u5185\u5b58\u6dd8\u6c70\u662f\u57fa\u4e8eredis\u81ea\u8eab\u673a\u5236&#xff0c;\u4ece\u800c\u5b9e\u73b0\u65e0\u9700\u624b\u52a8\u7ef4\u62a4\u7684\u66f4\u65b0\u65b9\u5f0f\u3002<\/p>\n<p>Redis 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\u6839\u636e\u914d\u7f6e\u7684maxmemory-policy&#xff0c;\u968f\u673a\u91c7\u6837\u6307\u5b9a\u6570\u91cf\u7684\u952e&#xff08;maxmemory-samples&#xff09;&#xff1b;<\/li>\n<li>\u4ece\u91c7\u6837\u7ed3\u679c\u4e2d\u7b5b\u9009\u51fa\u7b26\u5408\u6dd8\u6c70\u6761\u4ef6\u7684\u952e&#xff08;\u5982 LRU \u9009\u6700\u4e45\u672a\u8bbf\u95ee\u3001LFU \u9009\u9891\u7387\u6700\u4f4e&#xff09;&#xff1b;<\/li>\n<li>\u5220\u9664\u7b5b\u9009\u51fa\u7684\u952e&#xff0c;\u91ca\u653e\u5185\u5b58&#xff0c;\u5b8c\u6210\u5f53\u524d\u5199\u64cd\u4f5c&#xff1b;<\/li>\n<li>\u82e5\u4e00\u6b21\u6dd8\u6c70\u540e\u5185\u5b58\u4ecd\u672a\u4f4e\u4e8e\u9608\u503c&#xff0c;\u91cd\u590d\u6b65\u9aa4 2-4&#xff0c;\u76f4\u81f3\u5185\u5b58\u8fbe\u6807\u3002<\/li>\n<p>\u4ece\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d&#xff0c;\u53ef\u4ee5\u4e86\u89e3\u5230\u5185\u5b58\u6dd8\u6c70\u673a\u5236\u7684\u968f\u673a\u6027&#xff0c;\u4f7f\u5f97\u6700\u540e\u7684\u6570\u636e\u4e00\u81f4\u6027\u4e5f\u4f1a\u8f83\u4f4e\u3002\u8be5\u65b9\u6cd5\u7ef4\u62a4\u6210\u672c\u4e5f\u4f4e\u3002<\/p>\n<hr 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class=\"token class-name\">Object<\/span> cacheValue <span class=\"token operator\">&#061;<\/span> redisTemplate<span class=\"token punctuation\">.<\/span><span class=\"token function\">opsForValue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>cacheKey<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>cacheValue <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>NULL_VALUE<span class=\"token punctuation\">.<\/span><span class=\"token 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