{"id":132547,"date":"2024-10-30T22:01:18","date_gmt":"2024-10-30T14:01:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/132547\/"},"modified":"2024-10-30T22:01:19","modified_gmt":"2024-10-30T14:01:19","slug":"redis%e7%b7%9a%e7%a8%8b%e6%a8%a1%e5%9e%8b%e6%b7%b1%e5%85%a5%e5%89%96%e6%9e%90%ef%bc%88redis%e7%b7%9a%e7%a8%8b%e6%a8%a1%e5%9e%8b%e5%88%86%e6%9e%90%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/132547\/","title":{"rendered":"Redis\u7dda\u7a0b\u6a21\u578b\u6df1\u5165\u5256\u6790\uff08redis\u7dda\u7a0b\u6a21\u578b\u5206\u6790\uff09"},"content":{"rendered":"<h1 id=\"redis%e7%b7%9a%e7%a8%8b%e6%a8%a1%e5%9e%8b%e6%b7%b1%e5%85%a5%e5%89%96%e6%9e%90%ef%bc%88redis%e7%b7%9a%e7%a8%8b%e6%a8%a1%e5%9e%8b%e5%88%86%e6%9e%90%ef%bc%89-dwjZmwLxgS\">Redis\u7dda\u7a0b\u6a21\u578b\u6df1\u5165\u5256\u6790\uff08redis\u7dda\u7a0b\u6a21\u578b\u5206\u6790\uff09<\/h1>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6548\u80fd\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\uff0c\u5982\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u3002\u5176\u6027\u80fd\u7684\u512a\u8d8a\u6027\u90e8\u5206\u6e90\u65bc\u5176\u7368\u7279\u7684\u7dda\u7a0b\u6a21\u578b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u7684\u7dda\u7a0b\u6a21\u578b\uff0c\u5206\u6790\u5176\u8a2d\u8a08\u7406\u5ff5\u53ca\u5be6\u73fe\u65b9\u5f0f\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%9e%b6%e6%a7%8b-dwjZmwLxgS\">Redis\u7684\u57fa\u672c\u67b6\u69cb<\/h2>\n<p>Redis\u7684\u67b6\u69cb\u4e3b\u8981\u7531\u5ba2\u6236\u7aef\u548c\u670d\u52d9\u5668\u7d44\u6210\u3002\u5ba2\u6236\u7aef\u901a\u904eTCP\u9023\u63a5\u5230Redis\u670d\u52d9\u5668\uff0c\u4e26\u767c\u9001\u8acb\u6c42\u3002Redis\u670d\u52d9\u5668\u63a5\u6536\u5230\u8acb\u6c42\u5f8c\uff0c\u6839\u64da\u8acb\u6c42\u7684\u985e\u578b\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002Redis\u7684\u6838\u5fc3\u662f\u55ae\u7dda\u7a0b\u6a21\u578b\uff0c\u9019\u610f\u5473\u8457\u6240\u6709\u7684\u8acb\u6c42\u90fd\u662f\u5728\u55ae\u4e00\u7dda\u7a0b\u4e2d\u8655\u7406\u7684\u3002<\/p>\n<h3 id=\"%e5%96%ae%e7%b7%9a%e7%a8%8b%e6%a8%a1%e5%9e%8b%e7%9a%84%e5%84%aa%e5%8b%a2-dwjZmwLxgS\">\u55ae\u7dda\u7a0b\u6a21\u578b\u7684\u512a\u52e2<\/h3>\n<ul>\n<li><strong>\u7c21\u5316\u8a2d\u8a08\uff1a<\/strong>\u55ae\u7dda\u7a0b\u6a21\u578b\u4f7f\u5f97Redis\u7684\u8a2d\u8a08\u66f4\u52a0\u7c21\u55ae\uff0c\u907f\u514d\u4e86\u591a\u7dda\u7a0b\u74b0\u5883\u4e0b\u7684\u7af6\u722d\u689d\u4ef6\u548c\u6b7b\u9396\u554f\u984c\u3002<\/li>\n<li><strong>\u9ad8\u6548\u7684\u4e0a\u4e0b\u6587\u5207\u63db\uff1a<\/strong>\u7531\u65bc\u53ea\u6709\u4e00\u500b\u7dda\u7a0b\uff0cRedis\u4e0d\u9700\u8981\u9032\u884c\u4e0a\u4e0b\u6587\u5207\u63db\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11CPU\u7684\u8ca0\u64d4\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u55ae\u7dda\u7a0b\u8655\u7406\u8acb\u6c42\u53ef\u4ee5\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u907f\u514d\u4e86\u591a\u7dda\u7a0b\u4e0b\u53ef\u80fd\u51fa\u73fe\u7684\u6578\u64da\u7af6\u722d\u554f\u984c\u3002<\/li>\n<\/ul>\n<h3 id=\"%e4%ba%8b%e4%bb%b6%e5%be%aa%e7%92%b0%e6%a9%9f%e5%88%b6-dwjZmwLxgS\">\u4e8b\u4ef6\u5faa\u74b0\u6a5f\u5236<\/h3>\n<p>Redis\u4f7f\u7528\u4e8b\u4ef6\u5faa\u74b0\u6a5f\u5236\u4f86\u8655\u7406\u8acb\u6c42\u3002\u9019\u7a2e\u6a5f\u5236\u5141\u8a31Redis\u5728\u55ae\u4e00\u7dda\u7a0b\u4e2d\u540c\u6642\u8655\u7406\u591a\u500b\u5ba2\u6236\u7aef\u7684\u8acb\u6c42\u3002\u5177\u9ad4\u4f86\u8aaa\uff0cRedis\u4f7f\u7528\u4e86I\/O\u591a\u8def\u5fa9\u7528\u6280\u8853\uff0c\u5982epoll\u6216select\uff0c\u4f86\u76e3\u63a7\u591a\u500b\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u72c0\u614b\uff0c\u5f9e\u800c\u5be6\u73fe\u975e\u963b\u585e\u7684\u8acb\u6c42\u8655\u7406\u3002<\/p>\n<pre><code>while (1) {\n    \/\/ \u7b49\u5f85\u4e8b\u4ef6\u767c\u751f\n    int num_events = epoll_wait(epoll_fd, events, max_events, timeout);\n    for (int i = 0; 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