{"id":201573,"date":"2025-05-10T08:53:45","date_gmt":"2025-05-10T00:53:45","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201573\/"},"modified":"2025-05-10T08:53:45","modified_gmt":"2025-05-10T00:53:45","slug":"%e5%b9%b2%e8%b4%a7%e5%88%86%e4%ba%ab%ef%bc%9aredis%e5%a6%82%e4%bd%95%e5%a4%84%e7%90%86%e5%ae%a2%e6%88%b7%e7%ab%af%e8%bf%9e%e6%8e%a5%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201573\/","title":{"rendered":"\u5e72\u8d27\u5206\u4eab\uff1aRedis\u5982\u4f55\u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5e72\u8d27\u5206\u4eab\uff1aRedis\u5982\u4f55\u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5\uff1f<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300a\u5e72\u8d27\u5206\u4eab\uff1aRedis\u5982\u4f55\u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ecRedis\u3001\u5ba2\u6237\u7aef\u8fde\u63a5\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n<p>\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e86&nbsp;Redis&nbsp;\u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u4e00\u4e9b\u5185\u90e8\u5b9e\u73b0\u673a\u5236\uff0c\u5305\u62ec\u8fde\u63a5\u5904\u7406\u3001\u8d85\u65f6\u3001\u7f13\u51b2\u533a\u7b49\u4e00\u7cfb\u5217\u5185\u5bb9\u3002\uff08\u6ce8\uff1a\u672c\u6587\u6240\u8ff0\u5185\u5bb9\u57fa\u4e8e Redis2.6 \u53ca\u4ee5\u4e0a\u7248\u672c\u3002\uff09<\/p>\n<p><strong>\u8fde\u63a5\u7684\u5efa\u7acb<\/strong><\/p>\n<p>Redis\u901a\u8fc7\u76d1\u542c\u4e00\u4e2a TCP \u7aef\u53e3\u6216\u8005 Unix socket \u7684\u65b9\u5f0f\u6765\u63a5\u6536\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\uff0c\u5f53\u4e00\u4e2a\u8fde\u63a5\u5efa\u7acb\u540e\uff0cRedis \u5185\u90e8\u4f1a\u8fdb\u884c\u4ee5\u4e0b\u4e00\u4e9b\u64cd\u4f5c\uff1a<\/p>\n<ul>\n<li>\u9996\u5148\uff0c\u5ba2\u6237\u7aef socket \u4f1a\u88ab\u8bbe\u7f6e\u4e3a\u975e\u963b\u585e\u6a21\u5f0f\uff0c\u56e0\u4e3a Redis \u5728\u7f51\u7edc\u4e8b\u4ef6\u5904\u7406\u4e0a\u91c7\u7528\u7684\u662f\u975e\u963b\u585e\u591a\u8def\u590d\u7528\u6a21\u578b\u3002<\/li>\n<li>\u7136\u540e\u4e3a\u8fd9\u4e2asocket \u8bbe\u7f6e TCP_NODELAY \u5c5e\u6027\uff0c\u7981\u7528&nbsp;Nagle \u7b97\u6cd5<\/li>\n<li>\u7136\u540e\u521b\u5efa\u4e00\u4e2a readable \u7684\u6587\u4ef6\u4e8b\u4ef6\u7528\u4e8e\u76d1\u542c\u8fd9\u4e2a\u5ba2\u6237\u7aef socket \u7684\u6570\u636e\u53d1\u9001<\/li>\n<\/ul>\n<p>\u5f53\u5ba2\u6237\u7aef\u8fde\u63a5\u88ab\u521d\u59cb\u5316\u540e\uff0cRedis \u4f1a\u67e5\u770b\u76ee\u524d\u7684\u8fde\u63a5\u6570\uff0c\u7136\u540e\u5bf9\u6bd4\u914d\u7f6e\u597d\u7684&nbsp;maxclients&nbsp;\u503c\uff0c\u5982\u679c\u76ee\u524d\u8fde\u63a5\u6570\u5df2\u7ecf\u8fbe\u5230***\u8fde\u63a5\u6570 maxclients \u4e86\uff0c\u90a3\u4e48\u8bf4\u660e\u8fd9\u4e2a\u8fde\u63a5\u4e0d\u80fd\u518d\u63a5\u6536\uff0cRedis \u4f1a\u76f4\u63a5\u8fd4\u56de\u5ba2\u6237\u7aef\u4e00\u4e2a\u8fde\u63a5\u9519\u8bef\uff0c\u5e76\u9a6c\u4e0a\u5173\u95ed\u6389\u8fd9\u4e2a\u8fde\u63a5\u3002<\/p>\n<p><strong>\u670d\u52a1\u7aef\u5904\u7406\u987a\u5e8f<\/strong><\/p>\n<p>\u5982\u679c\u6709\u591a\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u4e0a Redis\uff0c\u5e76\u4e14\u90fd\u5411 Redis \u53d1\u9001\u547d\u4ee4\uff0c\u90a3\u4e48 Redis \u670d\u52a1\u7aef\u4f1a\u5148\u5904\u7406\u54ea\u4e2a\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u5462\uff1f\u7b54\u6848\u5176\u5b9e\u5e76\u4e0d\u786e\u5b9a\uff0c\u4e3b\u8981\u4e0e\u4e24\u4e2a\u56e0\u7d20\u6709\u5173\uff0c\u4e00\u662f\u5ba2\u6237\u7aef\u5bf9\u5e94\u7684 socket \u5bf9\u5e94\u7684\u6570\u5b57\u7684\u5927\u5c0f\uff0c\u4e8c\u662f kernal \u62a5\u544a\u5404\u4e2a\u5ba2\u6237\u7aef\u4e8b\u4ef6\u7684\u5148\u540e\u987a\u5e8f\u3002<\/p>\n<p>Redis \u5904\u7406\u4e00\u4e2a\u5ba2\u6237\u7aef\u4f20\u6765\u6570\u636e\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u5b83\u5bf9\u89e6\u53d1\u4e8b\u4ef6\u7684 socket \u8c03\u7528\u4e00\u6b21 read()\uff0c\u53ea\u8bfb\u4e00\u6b21\uff08\u800c\u4e0d\u662f\u628a\u8fd9\u4e2a socket \u4e0a\u7684\u6d88\u606f\u8bfb\u5b8c\u4e3a\u6b62\uff09\uff0c\u662f\u4e3a\u4e86\u9632\u6b62\u7531\u4e8e\u67d0\u4e2a\u522b\u5ba2\u6237\u7aef\u6301\u7eed\u53d1\u9001\u592a\u591a\u547d\u4ee4\uff0c\u5bfc\u81f4\u5176\u5b83\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u957f\u65f6\u95f4\u5f97\u4e0d\u5230\u5904\u7406\u7684\u60c5\u51b5\u3002<\/li>\n<li>\u5f53\u7136\uff0c\u5f53\u8fd9\u4e00\u6b21 read() \u8c03\u7528\u5b8c\u6210\u540e\uff0c\u5b83\u91cc\u9762\u65e0\u8bba\u5305\u542b\u591a\u5c11\u4e2a\u547d\u4ee4\uff0c\u90fd\u4f1a\u88ab\u4e00\u6b21\u6027\u987a\u5e8f\u5730\u6267\u884c\u3002\u8fd9\u6837\u5c31\u4fdd\u8bc1\u4e86\u5bf9\u5404\u4e2a\u5ba2\u6237\u7aef\u547d\u4ee4\u7684\u516c\u5e73\u5bf9\u5f85\u3002<\/li>\n<\/ul>\n<p><strong>\u5173\u4e8e***\u8fde\u63a5\u6570 maxclients<\/strong><\/p>\n<p>\u5728 Redis2.4 \u4e2d\uff0c***\u8fde\u63a5\u6570\u662f\u88ab\u76f4\u63a5\u786c\u7f16\u7801\u5728\u4ee3\u7801\u91cc\u9762\u7684\uff0c\u800c\u57282.6\u7248\u672c\u4e2d\u8fd9\u4e2a\u503c\u53d8\u6210\u53ef\u914d\u7f6e\u7684\u3002maxclients \u7684\u9ed8\u8ba4\u503c\u662f 10000\uff0c\u4f60\u4e5f\u53ef\u4ee5\u5728 redis.conf \u4e2d\u5bf9\u8fd9\u4e2a\u503c\u8fdb\u884c\u4fee\u6539\u3002<\/p>\n<p>\u5f53\u7136\uff0c\u8fd9\u4e2a\u503c\u53ea\u662f Redis \u4e00\u53a2\u60c5\u613f\u7684\u503c\uff0cRedis \u8fd8\u4f1a\u7167\u987e\u5230\u7cfb\u7edf\u672c\u8eab\u5bf9\u8fdb\u7a0b\u4f7f\u7528\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u7684\u9650\u5236\u3002\u5728\u542f\u52a8\u65f6 Redis \u4f1a\u68c0\u67e5\u7cfb\u7edf\u7684 soft limit\uff0c\u4ee5\u67e5\u770b\u6253\u5f00\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u4e2a\u6570\u4e0a\u9650\u3002\u5982\u679c\u7cfb\u7edf\u8bbe\u7f6e\u7684\u6570\u5b57\uff0c\u5c0f\u4e8e\u54b1\u4eec\u5e0c\u671b\u7684***\u8fde\u63a5\u6570\u52a032\uff0c\u90a3\u4e48\u8fd9\u4e2a maxclients \u7684\u8bbe\u7f6e\u5c06\u4e0d\u8d77\u4f5c\u7528\uff0cRedis \u4f1a\u6309\u7cfb\u7edf\u8981\u6c42\u7684\u6765\u8bbe\u7f6e\u8fd9\u4e2a\u503c\u3002\uff08\u52a032\u662f\u56e0\u4e3a Redis \u5185\u90e8\u4f1a\u4f7f\u7528\u6700\u591a32\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u6240\u4ee5\u8fde\u63a5\u80fd\u4f7f\u7528\u7684\u76f8\u5f53\u4e8e\u6240\u6709\u80fd\u7528\u7684\u63cf\u8ff0\u7b26\u53f7\u51cf32\uff09\u3002<\/p>\n<p>\u5f53\u4e0a\u9762\u8bf4\u7684\u8fd9\u79cd\u60c5\u51b5\u53d1\u751f\u65f6\uff08maxclients \u8bbe\u7f6e\u540e\u4e0d\u8d77\u4f5c\u7528\u7684\u60c5\u51b5\uff09\uff0cRedis \u7684\u542f\u52a8\u8fc7\u7a0b\u4e2d\u5c06\u4f1a\u6709\u76f8\u5e94\u7684\u65e5\u5fd7\u8bb0\u5f55\u3002\u6bd4\u5982\u4e0b\u9762\u547d\u4ee4\u5e0c\u671b\u8bbe\u7f6e***\u5ba2\u6237\u7aef\u6570\u91cf\u4e3a100000\uff0c\u6240\u4ee5 Redis \u9700\u8981 100000+32 \u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u800c\u7cfb\u7edf\u7684***\u6587\u4ef6\u63cf\u8ff0\u7b26\u53f7\u8bbe\u7f6e\u4e3a10144\uff0c\u6240\u4ee5 Redis \u53ea\u80fd\u5c06 maxclients \u8bbe\u7f6e\u4e3a 10144 \u2013 32 = 10112\u3002<\/p>\n<p> $ .\/redis-server &#8211;maxclients 100000 [41422] 23 Jan 11:28:33.179 # Unable to set the max number of files limit to 100032 (Invalid argument), setting the max clients configuration to 10112. <\/p>\n<p>\u6240\u4ee5\u8bf4\u5f53\u4f60\u60f3\u8bbe\u7f6e maxclients \u503c\u65f6\uff0c***\u987a\u4fbf\u4fee\u6539\u4e00\u4e0b\u4f60\u7684\u7cfb\u7edf\u8bbe\u7f6e\uff0c\u5f53\u7136\uff0c\u517b\u6210\u770b\u65e5\u5fd7\u7684\u597d\u4e60\u60ef\u4e5f\u80fd\u53d1\u73b0\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u5177\u4f53\u7684\u8bbe\u7f6e\u65b9\u6cd5\u5c31\u770b\u4f60\u4e2a\u4eba\u7684\u9700\u6c42\u4e86\uff0c\u4f60\u53ef\u4ee5\u53ea\u4fee\u6539\u6b64\u6b21\u4f1a\u8bdd\u7684\u9650\u5236\uff0c\u4e5f\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7sysctl \u4fee\u6539\u7cfb\u7edf\u7684\u9ed8\u8ba4\u8bbe\u7f6e\u3002\u5982\uff1a<\/p>\n<p> ulimit -Sn 100000 # This will only work if hard limit is big enough. sysctl -w fs.file-max=100000 <\/p>\n<p><strong>\u8f93\u51fa\u7f13\u51b2\u533a\u5927\u5c0f\u9650\u5236<\/strong><\/p>\n<p>\u5bf9\u4e8e Redis \u7684\u8f93\u51fa\uff08\u4e5f\u5c31\u662f\u547d\u4ee4\u7684\u8fd4\u56de\u503c\uff09\u6765\u8bf4\uff0c\u5176\u5927\u5c0f\u7ecf\u5e38\u662f\u4e0d\u53ef\u63a7\u7684\uff0c\u53ef\u80fd\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u547d\u4ee4\uff0c\u80fd\u591f\u4ea7\u751f\u4f53\u79ef\u5e9e\u5927\u7684\u8fd4\u56de\u6570\u636e\u3002\u53e6\u5916\u4e5f\u6709\u53ef\u80fd\u56e0\u4e3a\u6267\u884c\u547d\u4ee4\u592a\u591a\uff0c\u4ea7\u751f\u7684\u8fd4\u56de\u6570\u636e\u7684\u901f\u7387\u8d85\u8fc7\u4e86\u5f80\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u901f\u7387\uff0c\u8fd9\u65f6\u4e5f\u4f1a\u4ea7\u751f\u6d88\u606f\u5806\u79ef\uff0c\u4ece\u800c\u9020\u6210\u8f93\u51fa\u7f13\u51b2\u533a\u8d8a\u6765\u8d8a\u5927\uff0c\u5360\u7528\u8fc7\u591a\u5185\u5b58\uff0c\u751a\u81f3\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83\u3002<\/p>\n<p>\u6240\u4ee5 Redis \u8bbe\u7f6e\u4e86\u4e00\u4e9b\u4fdd\u62a4\u673a\u5236\u6765\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\u7684\u51fa\u73b0\uff0c\u8fd9\u4e9b\u673a\u5236\u4f5c\u7528\u4e8e\u4e0d\u540c\u79cd\u7c7b\u7684\u5ba2\u6237\u7aef\uff0c\u6709\u4e0d\u540c\u7684\u8f93\u51fa\u7f13\u51b2\u533a\u5927\u5c0f\u9650\u5236\uff0c\u9650\u5236\u65b9\u5f0f\u6709\u4e24\u79cd\uff1a<\/p>\n<ul>\n<li>\u4e00\u79cd\u662f\u5927\u5c0f\u9650\u5236\uff0c\u5f53\u67d0\u4e00\u4e2a\u5ba2\u6237\u7aef\u7684\u7f13\u51b2\u533a\u8d85\u8fc7\u67d0\u4e00\u5927\u5c0f\u65f6\uff0c\u76f4\u63a5\u5173\u95ed\u6389\u8fd9\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5<\/li>\n<li>\u53e6\u4e00\u79cd\u662f\u5f53\u67d0\u4e00\u4e2a\u5ba2\u6237\u7aef\u7684\u7f13\u51b2\u533a\u6301\u7eed\u4e00\u6bb5\u65f6\u95f4\u5360\u7528\u7a7a\u95f4\u8fc7\u5927\u65f6\uff0c\u4e5f\u76f4\u63a5\u5173\u95ed\u6389\u5ba2\u6237\u7aef\u8fde\u63a5<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u4e0d\u540c\u5ba2\u6237\u7aef\u7684\u7b56\u7565\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u5bf9\u666e\u901a\u5ba2\u6237\u7aef\u6765\u8bf4\uff0c\u9650\u5236\u4e3a0\uff0c\u4e5f\u5c31\u662f\u4e0d\u9650\u5236\uff0c\u56e0\u4e3a\u666e\u901a\u5ba2\u6237\u7aef\u901a\u5e38\u91c7\u7528\u963b\u585e\u5f0f\u7684\u6d88\u606f\u5e94\u7b54\u6a21\u5f0f\uff0c\u5982\uff1a\u53d1\u9001\u8bf7\u6c42\uff0c\u7b49\u5f85\u8fd4\u56de\uff0c\u518d\u53d1\u8bf7\u6c42\uff0c\u518d\u7b49\u5f85\u8fd4\u56de\u3002\u8fd9\u79cd\u6a21\u5f0f\u901a\u5e38\u4e0d\u4f1a\u5bfc\u81f4\u8f93\u51fa\u7f13\u51b2\u533a\u7684\u5806\u79ef\u81a8\u80c0\u3002<\/li>\n<li>\u5bf9\u4e8e Pub\/Sub \u5ba2\u6237\u7aef\u6765\u8bf4\uff0c\u5927\u5c0f\u9650\u5236\u662f32m\uff0c\u5f53\u8f93\u51fa\u7f13\u51b2\u533a\u8d85\u8fc732m\u65f6\uff0c\u4f1a\u5173\u95ed\u8fde\u63a5\u3002\u6301\u7eed\u6027\u9650\u5236\u662f\uff0c\u5f53\u5ba2\u6237\u7aef\u7f13\u51b2\u533a\u5927\u5c0f\u6301\u7eed60\u79d2\u8d85\u8fc78m\uff0c\u4e5f\u4f1a\u5bfc\u81f4\u8fde\u63a5\u5173\u95ed\u3002<\/li>\n<li>\u800c\u5bf9\u4e8e Slave \u5ba2\u6237\u7aef\u6765\u8bf4\uff0c\u5927\u5c0f\u9650\u5236\u662f256m\uff0c\u6301\u7eed\u6027\u9650\u5236\u662f\u5f53\u5ba2\u6237\u7aef\u7f13\u51b2\u533a\u5927\u5c0f\u6301\u7eed60\u79d2\u8d85\u8fc764m\u65f6\uff0c\u5173\u95ed\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<p>\u4e0a\u9762\u4e09\u79cd\u89c4\u5219\u90fd\u662f\u53ef\u914d\u7f6e\u7684\u3002\u53ef\u4ee5\u901a\u8fc7 CONFIG SET \u547d\u4ee4\u6216\u8005\u4fee\u6539 redis.conf \u6587\u4ef6\u6765\u914d\u7f6e\u3002<\/p>\n<p><strong>\u8f93\u5165\u7f13\u51b2\u533a\u5927\u5c0f\u9650\u5236<\/strong><\/p>\n<p>Redis 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