{"id":202353,"date":"2025-05-10T10:58:30","date_gmt":"2025-05-10T02:58:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202353\/"},"modified":"2025-05-10T10:58:30","modified_gmt":"2025-05-10T02:58:30","slug":"redis%e4%b8%ad%e8%bf%87%e6%9c%9f%e7%ad%96%e7%95%a5%e6%98%af%e6%80%8e%e4%b9%88%e6%a0%b7%e7%9a%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202353\/","title":{"rendered":"Redis\u4e2d\u8fc7\u671f\u7b56\u7565\u662f\u600e\u4e48\u6837\u7684"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>Redis\u4e2d\u8fc7\u671f\u7b56\u7565\u662f\u600e\u4e48\u6837\u7684<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6570\u636e\u5e93<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6570\u636e\u5e93<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aRedis\u4e2d\u8fc7\u671f\u7b56\u7565\u662f\u600e\u4e48\u6837\u7684\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~<\/p>\n<h3><strong>\u4fdd\u5b58\u8fc7\u671f\u65f6\u95f4<\/strong><\/h3>\n<p>Redis\u53ef\u4ee5\u4e3a\u6bcf\u4e2akey\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u4f1a\u5c06\u6bcf\u4e2a\u8bbe\u7f6e\u4e86\u8fc7\u671f\u65f6\u95f4\u7684key\u653e\u5165\u4e00\u4e2a\u72ec\u7acb\u7684\u5b57\u5178\u4e2d\u3002\u3010\u76f8\u5173\u63a8\u8350\uff1aRedis\u89c6\u9891\u6559\u7a0b\u3011<\/p>\n<pre>typedef&nbsp;struct&nbsp;redisDb&nbsp;{&nbsp;\nint&nbsp;id;&nbsp;\/\/id\u662f\u6570\u636e\u5e93\u5e8f\u53f7\uff0c\u4e3a0-15(\u9ed8\u8ba4Redis\u670916\u4e2a\u6570\u636e\u5e93)&nbsp;\nlong&nbsp;avg_ttl;&nbsp;\/\/\u5b58\u50a8\u7684\u6570\u636e\u5e93\u5bf9\u8c61\u7684\u5e73\u5747ttl(time&nbsp;to&nbsp;live)\uff0c\u7528\u4e8e\u7edf\u8ba1&nbsp;\ndict&nbsp;*dict;&nbsp;\/\/\u5b58\u50a8\u6570\u636e\u5e93\u6240\u6709\u7684key-value&nbsp;\ndict&nbsp;*expires;&nbsp;\/\/\u5b58\u50a8key\u7684\u8fc7\u671f\u65f6\u95f4&nbsp;\ndict&nbsp;*blocking_keys;\/\/blpop&nbsp;\u5b58\u50a8\u963b\u585ekey\u548c\u5ba2\u6237\u7aef\u5bf9\u8c61&nbsp;\ndict&nbsp;*ready_keys;\/\/\u963b\u585e\u540epush&nbsp;\u54cd\u5e94\u963b\u585e\u5ba2\u6237\u7aef&nbsp;\u5b58\u50a8\u963b\u585e\u540epush\u7684key\u548c\u5ba2\u6237\u7aef\u5bf9\u8c61&nbsp;dict&nbsp;*watched_keys;\/\/\u5b58\u50a8watch\u76d1\u63a7\u7684\u7684key\u548c\u5ba2\u6237\u7aef\u5bf9\u8c61&nbsp;\n}&nbsp;redisDb;<\/pre>\n<p>dict \u7528\u6765\u7ef4\u62a4\u4e00\u4e2a Redis \u6570\u636e\u5e93\u4e2d\u5305\u542b\u7684\u6240\u6709 Key-Value \u952e\u503c\u5bf9\uff0cexpires\u5219\u7528\u4e8e\u7ef4\u62a4\u4e00\u4e2a Redis \u6570\u636e\u5e93\u4e2d\u8bbe\u7f6e\u4e86\u5931\u6548\u65f6\u95f4\u7684\u952e(\u5373key\u4e0e\u5931\u6548\u65f6\u95f4\u7684\u6620\u5c04)\u3002<strong>\u6ce8\u610f\u8fd9\u91cc\u7684\u5931\u6548\u65f6\u95f4\u662f\u7528\u6beb\u79d2\u7684\u65f6\u95f4\u6233\u8868\u793a\u7684\uff0c\u6bd4\u59822022-01-02 22:45:02\u8fc7\u671f\u5219value\u4e3a1641134702000<\/strong><\/p>\n<p>\u5f53\u6211\u4eec\u4f7f\u7528expire\u547d\u4ee4\u8bbe\u7f6e\u4e00\u4e2akey\u7684\u5931\u6548\u65f6\u95f4\u65f6\uff0cRedis \u9996\u5148\u5230 dict \u8fd9\u4e2a\u5b57\u5178\u8868\u4e2d\u67e5\u627e\u8981\u8bbe\u7f6e\u7684key\u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u5b58\u5728\u5c31\u5c06\u8fd9\u4e2akey\u548c\u5931\u6548\u65f6\u95f4\u6dfb\u52a0\u5230 expires \u8fd9\u4e2a\u5b57\u5178\u8868\u3002<\/p>\n<p>\u5f53\u6211\u4eec\u4f7f\u7528setex\u547d\u4ee4\u5411\u7cfb\u7edf\u63d2\u5165\u6570\u636e\u65f6\uff0cRedis \u9996\u5148\u5c06 Key \u548c Value \u6dfb\u52a0\u5230 dict \u8fd9\u4e2a\u5b57\u5178\u8868\u4e2d\uff0c\u7136\u540e\u5c06 Key \u548c\u5931\u6548\u65f6\u95f4\u6dfb\u52a0\u5230 expires \u8fd9\u4e2a\u5b57\u5178\u8868\u4e2d\u3002<strong>\u6ce8\u610fsetex\u53ea\u80fd\u7528\u4e8e\u5b57\u7b26\u4e32<\/strong>\u3002<\/p>\n<p>\u7b80\u5355\u5730\u603b\u7ed3\u6765\u8bf4\u5c31\u662f\uff0c\u8bbe\u7f6e\u4e86\u5931\u6548\u65f6\u95f4\u7684key\u548c\u5177\u4f53\u7684\u5931\u6548\u65f6\u95f4\u5168\u90e8\u90fd\u7ef4\u62a4\u5728 expires \u8fd9\u4e2a\u5b57\u5178\u8868\u4e2d\u3002<\/p>\n<h3><strong>\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4<\/strong><\/h3>\n<p><strong>expire\u7684\u4f7f\u7528<\/strong><\/p>\n<p>expire\u547d\u4ee4\u7684\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b: expire key ttl(\u5355\u4f4d\u79d2)<\/p>\n<pre>127.0.0.1:6379&gt;&nbsp;expire&nbsp;name&nbsp;2&nbsp;#2\u79d2\u5931\u6548&nbsp;\n(integer)&nbsp;1&nbsp;\n127.0.0.1:6379&gt;&nbsp;get&nbsp;name&nbsp;\n(nil)&nbsp;\n127.0.0.1:6379&gt;&nbsp;set&nbsp;name&nbsp;zhangfei&nbsp;\nOK&nbsp;\n127.0.0.1:6379&gt;&nbsp;ttl&nbsp;name&nbsp;#\u6c38\u4e45\u6709\u6548&nbsp;\n(integer)&nbsp;-1&nbsp;\n127.0.0.1:6379&gt;&nbsp;expire&nbsp;name&nbsp;30&nbsp;#30\u79d2\u5931\u6548&nbsp;\n(integer)&nbsp;1&nbsp;\n127.0.0.1:6379&gt;&nbsp;ttl&nbsp;name&nbsp;#\u8fd8\u670924\u79d2\u5931\u6548&nbsp;\n(integer)&nbsp;24&nbsp;\n127.0.0.1:6379&gt;&nbsp;ttl&nbsp;name&nbsp;#\u5931\u6548&nbsp;\n(integer)&nbsp;-2<\/pre>\n<p>Redis\u6709\u56db\u4e2a\u4e0d\u540c\u7684\u547d\u4ee4\u53ef\u4ee5\u7528\u4e8e\u8bbe\u7f6e\u952e\u7684\u751f\u5b58\u65f6\u95f4\uff08\u952e\u53ef\u4ee5\u751f\u5b58\u591a\u4e45\uff09\u6216\u8fc7\u671f\u65f6\u95f4\uff08\u952e\u4ec0\u4e48\u65f6\u5019\u4f1a\u88ab\u5220\u9664\uff09:<\/p>\n<p>expire \u547d\u4ee4\u7528\u4e8e\u5c06\u952ekey\u7684\u751f\u5b58\u65f6\u95f4\u8bbe\u7f6e\u4e3attl<strong>\u79d2<\/strong><\/p>\n<p>pexpire \u547d\u4ee4\u7528\u4e8e\u5c06\u952ekey\u7684\u751f\u5b58\u65f6\u95f4\u8bbe\u7f6e\u4e3attl<strong>\u6beb\u79d2<\/strong><\/p>\n<p>expireat \u547d\u4ee4\u7528\u4e8e\u5c06\u952ekey\u7684\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u4e3atimestamp\u6240\u6307\u5b9a\u7684<strong>\u79d2<\/strong>\u6570\u65f6\u95f4\u6233<\/p>\n<p>pexpireat \u547d\u4ee4\u7528\u4e8e\u5c06\u952ekey\u7684\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u4e3atimestamp\u6240\u6307\u5b9a\u7684<strong>\u6beb\u79d2<\/strong>\u6570\u65f6\u95f4\u6233<\/p>\n<p>\u6ce8\u610fexpire\u3001pexpire\u3001expireat\u6700\u7ec8\u5b9e\u73b0\u90fd\u662f\u901a\u8fc7pexpireat\u5b9e\u73b0\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u65e0\u8bba\u5ba2\u6237\u7aef\u6267\u884c\u54ea\u4e2a\u547d\u4ee4\uff0c\u90fd\u4f1aRedis\u90fd\u4f1a\u8f6c\u6362\u6210pexpireat\u547d\u4ee4\u6267\u884c\u3002\u6240\u4ee5expires\u5b57\u5178\u4e2d\u5b58\u7684\u65f6\u95f4\u662f\u7528<strong>\u6beb\u79d2\u65f6\u95f4\u6233\u8868\u793a\u7684\u952e\u7684\u8fc7\u671f\u65f6\u95f4\u3002<\/strong><\/p>\n<h3><strong>\u8fc7\u671f\u7b56\u7565<\/strong><\/h3>\n<p>\u5982\u679c\u4e00\u4e2a\u952e\u8fc7\u671f\u4e86\uff0c\u90a3\u4ec0\u4e48\u65f6\u5019\u88ab\u5220\u9664\u5462\uff1f<\/p>\n<p>\u6709\u4e09\u79cd\u8fc7\u671f\u7b56\u7565<\/p>\n<ul>\n<li>\n<p>\u5b9a\u65f6\u5220\u9664\uff1a\u5728\u8bbe\u7f6e\u952e\u7684\u8fc7\u671f\u65f6\u95f4\u7684\u540c\u65f6\uff0c\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u8ba9\u5b9a\u65f6\u5668\u5728\u952e\u7684\u8fc7\u671f\u65f6\u95f4\u6765\u4e34\u65f6\uff0c\u7acb\u5373\u6267\u884c\u5bf9\u952e\u7684\u5220\u9664\u64cd\u4f5c\u3002\uff08<strong>\u521b\u5efa\u5b9a\u65f6\u5668\u5220\u9664<\/strong>\uff09<\/p>\n<\/li>\n<li>\n<p>\u60f0\u6027\u5220\u9664\uff1a\u653e\u4efb\u952e\u7684\u8fc7\u671f\u4e0d\u7ba1\uff0c\u4f46\u662f\u6bcf\u6b21\u4ece\u952e\u7a7a\u95f4\u4e2d\u83b7\u53d6\u952e\u65f6\uff0c\u90fd\u68c0\u67e5\u53d6\u5f97\u7684\u952e\u662f\u5426\u8fc7\u671f\uff0c\u5982\u679c\u8fc7\u671f\u7684\u8bdd\uff0c\u5c31\u5220\u9664\u8be5\u952e\uff1b\u5982\u679c\u6ca1\u6709\u8fc7\u671f\uff0c\u5c31\u8fd4\u56de\u8be5\u952e\u3002\uff08<strong>\u4f7f\u7528\u7684\u65f6\u5019\u5220\u9664<\/strong>\uff09<\/p>\n<\/li>\n<li>\n<p>\u5b9a\u671f\u5220\u9664\uff1a\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\uff0c\u7a0b\u5e8f\u5c31\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u4e00\u6b21\u68c0\u67e5\uff0c\u5220\u9664\u91cc\u9762\u8fc7\u671f\u7684\u952e\u3002\u81f3\u4e8e\u8981\u5220\u9664\u591a\u5c11\u8fc7\u671f\u952e\uff0c\u4ee5\u53ca\u8981\u68c0\u67e5\u591a\u5c11\u4e2a\u6570\u636e\u5e93\uff0c\u5219\u6709\u7b97\u6cd5\u51b3\u5b9a\u3002\uff08<strong>\u5b9a\u671f\u626b\u63cf\u5220\u9664<\/strong>\uff09<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u5b9a\u65f6\u5220\u9664<\/strong><\/p>\n<ul>\n<li>\n<p>\u4f18\u70b9<\/p>\n<\/li>\n<\/ul>\n<p>1\u3001\u5bf9\u5185\u5b58\u6700\u53cb\u597d\uff1a\u901a\u8fc7\u4f7f\u7528\u5b9a\u65f6\u5668\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u8fc7\u671f\u7684\u952e\u4f1a\u5c3d\u53ef\u80fd\u5feb\u5730\u88ab\u5220\u9664\uff0c\u91ca\u653e\u6240\u5360\u5185\u5b58<\/p>\n<ul>\n<li>\n<p>\u7f3a\u70b9<\/p>\n<\/li>\n<\/ul>\n<p>1\u3001\u5bf9cpu\u6700\u4e0d\u53cb\u597d\uff1a\u5728\u8fc7\u671f\u952e\u6bd4\u8f83\u591a\u7684\u60c5\u51b5\u4e0b\uff0c\u5220\u9664\u8fc7\u671f\u952e\u8fd9\u4e00\u884c\u4e3a\u53ef\u80fd\u4f1a\u5360\u7528\u76f8\u5f53\u4e00\u90e8\u5206cpu\u7684\u65f6\u95f4\uff0c\u5bf9\u670d\u52a1\u5668\u7684\u54cd\u5e94\u65f6\u95f4\u548c\u541e\u5410\u91cf\u9020\u6210\u5f71\u54cd\u3002<\/p>\n<p><strong>\u60f0\u6027\u5220\u9664<\/strong><\/p>\n<ul>\n<li>\n<p>\u4f18\u70b9<\/p>\n<\/li>\n<\/ul>\n<p>1\u3001\u5bf9cpu\u6700\u53cb\u597d\uff1a\u53ea\u6709\u5728\u53d6\u51fa\u952e\u7684\u65f6\u5019\u624d\u4f1a\u5bf9\u8fc7\u671f\u952e\u8fdb\u884c\u68c0\u67e5\uff0c\u5373\u4e0d\u9700\u8981cpu\u5b9a\u671f\u626b\u63cf\uff0c\u4e5f\u4e0d\u9700\u8981\u521b\u5efa\u5927\u91cf\u7684\u5b9a\u65f6\u5668\u3002<\/p>\n<ul>\n<li>\n<p>\u7f3a\u70b9<\/p>\n<\/li>\n<\/ul>\n<p>1\u3001\u5bf9\u5185\u5b58\u6700\u4e0d\u53cb\u597d\uff1a\u5982\u679c\u4e00\u4e2a\u952e\u5df2\u7ecf\u8fc7\u671f\uff0c\u4f46\u662f\u540e\u9762\u4e0d\u4f1a\u88ab\u8bbf\u95ee\u5230\u7684\u8bdd\uff0c\u90a3\u4e48\u5c31\u4e00\u76f4\u4fdd\u7559\u5728\u6570\u636e\u5e93\u4e2d\u3002\u5982\u679c\u8fd9\u6837\u7684\u952e\u8fc7\u591a\uff0c\u65e0\u7591\u4f1a\u5360\u7528\u5f88\u5927\u7684\u5185\u5b58\u3002<\/p>\n<p><strong>\u5b9a\u671f\u5220\u9664<\/strong><\/p>\n<p>\u5b9a\u671f\u5220\u9664\u662f\u4e0a\u9762\u7684\u5b9a\u65f6\u5220\u9664\u548c\u60f0\u6027\u5220\u9664\u7684\u4e00\u4e2d\u6298\u4e2d\u65b9\u6848\u3002<\/p>\n<ul>\n<li>\n<p>\u4f18\u70b9<\/p>\n<\/li>\n<\/ul>\n<p>1\u3001\u5b9a\u671f\u5220\u9664\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\u6267\u884c\u4e00\u6b21\u8fc7\u671f\u952e\u64cd\u4f5c\uff0c\u5e76\u901a\u8fc7\u9650\u5236\u5220\u9664\u64cd\u4f5c\u6267\u884c\u7684\u65f6\u957f\u548c\u9891\u7387\u6765\u51cf\u5c11\u5220\u9664\u64cd\u4f5c\u5bf9cpu\u65f6\u95f4\u7684\u5f71\u54cd\u3002<\/p>\n<p>2\u3001\u901a\u8fc7\u5220\u9664\u8fc7\u671f\u952e\uff0c\u80fd\u6709\u6548\u7684\u51cf\u5c11\u56e0\u4e3a\u8fc7\u671f\u952e\u800c\u5e26\u6765\u7684\u5185\u5b58\u6d6a\u8d39<\/p>\n<ul>\n<li>\n<p>\u7f3a\u70b9 \u96be\u4ee5\u786e\u5b9a\u5220\u9664\u64cd\u4f5c\u6267\u884c\u7684\u65f6\u957f\u548c\u9891\u7387<\/p>\n<\/li>\n<\/ul>\n<p>1\u3001\u5982\u679c\u5220\u9664\u64cd\u4f5c\u6267\u884c\u5f97\u592a\u9891\u7e41\uff0c\u6216\u8005\u6267\u884c\u7684\u65f6\u95f4\u592a\u957f\uff0c\u5b9a\u671f\u5220\u9664\u7b56\u7565\u5c31\u4f1a\u9000\u5316\u6210\u5b9a\u65f6\u5220\u9664\uff0c\u4ee5\u81f3\u4e8e\u5360\u7528\u592a\u591acpu\u7684\u6267\u884c\u65f6\u95f4\u3002<\/p>\n<p>2\u3001\u5982\u679c\u5220\u9664\u64cd\u4f5c\u6267\u884c\u7684\u65f6\u95f4\u592a\u5c11\uff0c\u6216\u6267\u884c\u65f6\u95f4\u592a\u77ed\uff0c\u5b9a\u671f\u5220\u9664\u7b56\u7565\u53c8\u4f1a\u548c\u60f0\u6027\u5220\u9664\u4e00\u6837\uff0c\u51fa\u73b0\u5185\u5b58\u6d6a\u8d39\u3002<\/p>\n<h3><strong>Redis\u7684\u8fc7\u671f\u7b56\u7565<\/strong><\/h3>\n<p>Redis\u4f7f\u7528\u662f<strong>\u60f0\u6027\u5220\u9664<\/strong>\u548c<strong>\u5b9a\u671f\u5220\u9664<\/strong>\u4e24\u79cd\u7b56\u7565\uff1a\u901a\u8fc7\u914d\u597d\u4f7f\u7528\u8fd9\u4e24\u79cd\u7b56\u7565\uff0c\u670d\u52a1\u5668\u53ef\u4ee5\u5f88\u597d\u5730\u5728\u5408\u7406\u4f7f\u7528cpu\u65f6\u95f4\u548c\u907f\u514d\u6d6a\u8d39\u5185\u5b58\u7a7a\u95f4\u4e4b\u95f4\u53d6\u5f97\u5e73\u8861\u3002<\/p>\n<p><strong>\u60f0\u6027\u5220\u9664\u7b56\u7565\u7684\u5b9e\u73b0<\/strong><\/p>\n<p>\u8fc7\u671f\u952e\u7684\u60f0\u6027\u5220\u9664\u5220\u9664\u7b56\u7565\u7531db.c\/expireIfNeeded\u51fd\u6570\u5b9e\u73b0\uff0c\u6240\u6709\u8bfb\u5199\u6570\u636e\u5e93\u7684Redis\u547d\u4ee4\u5728\u6267\u884c\u4e4b\u524d\u90fd\u4f1a\u8c03\u7528expireIfNeed\u51fd\u6570\u5bf9\u8f93\u5165\u952e\u8fdb\u884c\u68c0\u67e5\uff1a<\/p>\n<ul>\n<li>\n<p>\u5982\u679c\u952e\u5df2\u7ecf\u8fc7\u671f\uff0c\u90a3\u4e48expireIfNeeded\u51fd\u6570\u5c06\u952e\u5220\u9664<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u952e\u672a\u8fc7\u671f\uff0c\u90a3\u4e48expireIfNeeded\u51fd\u6570\u4e0d\u505a\u64cd\u4f5c<\/p>\n<\/li>\n<\/ul>\n<p>\u547d\u4ee4\u8c03\u7528expireIfNeeded\u51fd\u6570\u8fc7\u7a0b\u5982\u4e0b\u56fe<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20240418\/171340365366207705be51a.jpg\" class=\"aligncenter\"><\/p>\n<p>\u53e6\u5916\u56e0\u4e3a\u6bcf\u4e2a\u88ab\u8bbf\u95ee\u7684\u952e\u90fd\u53ef\u80fd\u88ab\u5220\u9664\uff0c\u6240\u4ee5\u6bcf\u4e2a\u547d\u4ee4\u90fd\u5fc5\u987b\u80fd\u540c\u65f6\u5904\u7406\u952e\u5b58\u5728\u4ee5\u53ca\u4e0d\u5b58\u5728\u7684\u60c5\u51b5\u3002 \u4e0b\u56fe\u8868\u793aget\u547d\u4ee4\u7684\u6267\u884c\u8fc7\u7a0b<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20240418\/171340365366207705e5549.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5b9a\u671f\u5220\u9664\u7b56\u7565\u7684\u5b9e\u73b0<\/strong><\/p>\n<p>\u8fc7\u671f\u952e\u7684\u5b9a\u671f\u5220\u9664\u7b56\u7565\u7531redis.c\/activeExpireCycle\u51fd\u6570\u5b9e\u73b0\uff0c\u6bcf\u5f53Redis\u7684\u670d\u52a1\u5668\u5468\u671f\u6027\u64cd\u4f5credis.c\/serverCron\u51fd\u6570\u6267\u884c\u65f6\uff0cactiveExpireCycle\u51fd\u6570\u5c31\u4f1a\u88ab\u8c03\u7528\uff0c\u5b83\u5728\u89c4\u5b9a\u65f6\u95f4\u5185\uff0c\u5206\u591a\u6b21\u904d\u5386\u670d\u52a1\u5668\u4e2d\u5404\u4e2a\u6570\u636e\u5e93\u3002<\/p>\n<p>Redis \u9ed8\u8ba4\u6bcf\u79d2\u8fdb\u884c 10 \u6b21\u8fc7\u671f\u626b\u63cf\uff0c\u8fc7\u671f\u626b\u63cf\u4e0d\u4f1a\u904d\u5386\u8fc7\u671f\u5b57\u5178\u4e2d\u6240\u6709\u7684 key, \u800c\u662f\u91c7\u7528\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u8d2a\u5fc3\u7b56\u7565\uff0c\u6b65\u9aa4\u5982\u4e0b\u3002<\/p>\n<p>(1)\u4ece\u8fc7\u671f\u5b57\u5178\u4e2d\u968f\u673a\u9009\u51fa 20\u4e2a key\u3002<\/p>\n<p>(2)\u5220\u9664\u8fd9 20 \u4e2a key \u4e2d\u5df2\u7ecf\u8fc7\u671f\u7684 key\u3002<\/p>\n<p>(3)\u5982\u679c\u8fc7\u671f\u7684 key\u7684\u6bd4\u4f8b\u8d85\u8fc7 1\/4\uff0c\u90a3\u5c31\u91cd\u590d\u6b65\u9aa4 (1)\u3002 \u540c\u65f6\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u8fc7\u671f\u626b\u63cf\u4e0d\u4f1a\u51fa\u73b0\u5faa\u73af\u8fc7\u5ea6\uff0c\u5bfc\u81f4\u7ed3\u7a0b\u5361\u6b7b\u7684\u73b0\u8c61\uff0c\u7b97\u6cd5\u8fd8\u589e\u52a0\u4e86\u626b\u63cf\u65f6\u95f4\u7684\u4e0a\u9650\uff0c\u9ed8\u8ba4\u4e0d\u4f1a\u8d85\u8fc7 25ms\u3002<\/p>\n<p>\u5047\u8bbe\u4e00\u4e2a\u5927\u578b\u7684 Redis \u5b9e\u4f8b\u4e2d\u6240\u6709\u7684 key \u5728\u540c\u4e00\u65f6\u95f4\u8fc7\u671f\u4e86\uff0c\u4f1a\u51fa\u73b0\u600e\u6837\u7684\u7ed3\u679c\u5462?<\/p>\n<p><strong>\u6d88\u8017cpu<\/strong><\/p>\n<p>Redis 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