{"id":1720,"date":"2018-10-10T00:06:00","date_gmt":"2018-10-09T16:06:00","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=1720"},"modified":"2018-10-24T18:00:14","modified_gmt":"2018-10-24T10:00:14","slug":"redis-%e6%80%bb%e7%bb%93%e7%b2%be%e8%ae%b2-%e7%9c%8b%e4%b8%80%e7%af%87%e6%88%90%e9%ab%98%e6%89%8b%e7%b3%bb%e7%bb%9f-4","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/1720","title":{"rendered":"Redis \u603b\u7ed3\u7cbe\u8bb2 \u770b\u4e00\u7bc7\u6210\u9ad8\u624b\u7cfb\u7edf-4"},"content":{"rendered":"<div class=\"article-header-box\">\n<div class=\"article-header\">\n<div class=\"article-title-box\"><\/div>\n<div class=\"article-info-box\">\n<div class=\"operating\">\u672c\u6587\u56f4\u7ed5\u4ee5\u4e0b\u51e0\u70b9\u8fdb\u884c\u9610\u8ff0<\/div>\n<\/div>\n<\/div>\n<\/div>\n<article>\n<div id=\"article_content\" class=\"article_content clearfix csdn-tracking-statistics\" data-pid=\"blog\" data-mod=\"popu_307\" data-dsm=\"post\">\n<div 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name=\"t4\"><\/a><strong>2\u3001\u4f7f\u7528redis\u6709\u4ec0\u4e48\u7f3a\u70b9<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<p>\u5206\u6790:\u5927\u5bb6\u7528redis\u8fd9\u4e48\u4e45\uff0c\u8fd9\u4e2a\u95ee\u9898\u662f\u5fc5\u987b\u8981\u4e86\u89e3\u7684\uff0c\u57fa\u672c\u4e0a\u4f7f\u7528redis\u90fd\u4f1a\u78b0\u5230\u4e00\u4e9b\u95ee\u9898\uff0c\u5e38\u89c1\u7684\u4e5f\u5c31\u51e0\u4e2a\u3002<\/p>\n<p>\u56de\u7b54:\u4e3b\u8981\u662f\u56db\u4e2a\u95ee\u9898<\/p>\n<p>(\u4e00)\u7f13\u5b58\u548c\u6570\u636e\u5e93\u53cc\u5199\u4e00\u81f4\u6027\u95ee\u9898<\/p>\n<p>(\u4e8c)\u7f13\u5b58\u96ea\u5d29\u95ee\u9898<\/p>\n<p>(\u4e09)\u7f13\u5b58\u51fb\u7a7f\u95ee\u9898<\/p>\n<p>(\u56db)\u7f13\u5b58\u7684\u5e76\u53d1\u7ade\u4e89\u95ee\u9898<\/p>\n<p>\u8fd9\u56db\u4e2a\u95ee\u9898\uff0c\u6211\u4e2a\u4eba\u662f\u89c9\u5f97\u5728\u9879\u76ee\u4e2d\uff0c\u6bd4\u8f83\u5e38\u9047\u89c1\u7684\uff0c\u5177\u4f53\u89e3\u51b3\u65b9\u6848\uff0c\u540e\u6587\u7ed9\u51fa\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3><a 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\/>\n(\u4e09)\u91c7\u7528\u4e86\u975e\u963b\u585eI\/O\u591a\u8def\u590d\u7528\u673a\u5236<\/p>\n<p>&nbsp;<\/p>\n<p>\u9898\u5916\u8bdd\uff1a\u6211\u4eec\u73b0\u5728\u8981\u4ed4\u7ec6\u7684\u8bf4\u4e00\u8bf4I\/O\u591a\u8def\u590d\u7528\u673a\u5236\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u8bf4\u6cd5\u5b9e\u5728\u662f\u592a\u901a\u4fd7\u4e86\uff0c\u901a\u4fd7\u5230\u4e00\u822c\u4eba\u90fd\u4e0d\u61c2\u662f\u4ec0\u4e48\u610f\u601d\u3002\u535a\u4e3b\u6253\u4e00\u4e2a\u6bd4\u65b9\uff1a\u5c0f\u66f2\u5728S\u57ce\u5f00\u4e86\u4e00\u5bb6\u5feb\u9012\u5e97\uff0c\u8d1f\u8d23\u540c\u57ce\u5feb\u9001\u670d\u52a1\u3002\u5c0f\u66f2\u56e0\u4e3a\u8d44\u91d1\u9650\u5236\uff0c\u96c7\u4f63\u4e86\u4e00\u6279\u5feb\u9012\u5458\uff0c\u7136\u540e\u5c0f\u66f2\u53d1\u73b0\u8d44\u91d1\u4e0d\u591f\u4e86\uff0c\u53ea\u591f\u4e70\u4e00\u8f86\u8f66\u9001\u5feb\u9012\u3002<\/p>\n<p>\u7ecf\u8425\u65b9\u5f0f\u4e00<\/p>\n<p>\u5ba2\u6237\u6bcf\u9001\u6765\u4e00\u4efd\u5feb\u9012\uff0c\u5c0f\u66f2\u5c31\u8ba9\u4e00\u4e2a\u5feb\u9012\u5458\u76ef\u7740\uff0c\u7136\u540e\u5feb\u9012\u5458\u5f00\u8f66\u53bb\u9001\u5feb\u9012\u3002\u6162\u6162\u7684\u5c0f\u66f2\u5c31\u53d1\u73b0\u4e86\u8fd9\u79cd\u7ecf\u8425\u65b9\u5f0f\u5b58\u5728\u4e0b\u8ff0\u95ee\u9898<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>\u51e0\u5341\u4e2a\u5feb\u9012\u5458\u57fa\u672c\u4e0a\u65f6\u95f4\u90fd\u82b1\u5728\u4e86\u62a2\u8f66\u4e0a\u4e86\uff0c\u5927\u90e8\u5206\u5feb\u9012\u5458\u90fd\u5904\u5728\u95f2\u7f6e\u72b6\u6001\uff0c\u8c01\u62a2\u5230\u4e86\u8f66\uff0c\u8c01\u5c31\u80fd\u53bb\u9001\u5feb\u9012<\/li>\n<li>\u968f\u7740\u5feb\u9012\u7684\u589e\u591a\uff0c\u5feb\u9012\u5458\u4e5f\u8d8a\u6765\u8d8a\u591a\uff0c\u5c0f\u66f2\u53d1\u73b0\u5feb\u9012\u5e97\u91cc\u8d8a\u6765\u8d8a\u6324\uff0c\u6ca1\u529e\u6cd5\u96c7\u4f63\u65b0\u7684\u5feb\u9012\u5458\u4e86<\/li>\n<li>\u5feb\u9012\u5458\u4e4b\u95f4\u7684\u534f\u8c03\u5f88\u82b1\u65f6\u95f4<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>\u7efc\u5408\u4e0a\u8ff0\u7f3a\u70b9\uff0c\u5c0f\u66f2\u75db\u5b9a\u601d\u75db\uff0c\u63d0\u51fa\u4e86\u4e0b\u9762\u7684\u7ecf\u8425\u65b9\u5f0f<\/p>\n<p>\u7ecf\u8425\u65b9\u5f0f\u4e8c<\/p>\n<p>\u5c0f\u66f2\u53ea\u96c7\u4f63\u4e00\u4e2a\u5feb\u9012\u5458\u3002\u7136\u540e\u5462\uff0c\u5ba2\u6237\u9001\u6765\u7684\u5feb\u9012\uff0c\u5c0f\u66f2\u6309\u9001\u8fbe\u5730\u70b9\u6807\u6ce8\u597d\uff0c\u7136\u540e\u4f9d\u6b21\u653e\u5728\u4e00\u4e2a\u5730\u65b9\u3002\u6700\u540e\uff0c\u90a3\u4e2a\u5feb\u9012\u5458\u4f9d\u6b21\u7684\u53bb\u53d6\u5feb\u9012\uff0c\u4e00\u6b21\u62ff\u4e00\u4e2a\uff0c\u7136\u540e\u5f00\u7740\u8f66\u53bb\u9001\u5feb\u9012\uff0c\u9001\u597d\u4e86\u5c31\u56de\u6765\u62ff\u4e0b\u4e00\u4e2a\u5feb\u9012\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u5bf9\u6bd4<\/p>\n<p>\u4e0a\u8ff0\u4e24\u79cd\u7ecf\u8425\u65b9\u5f0f\u5bf9\u6bd4\uff0c\u662f\u4e0d\u662f\u660e\u663e\u89c9\u5f97\u7b2c\u4e8c\u79cd\uff0c\u6548\u7387\u66f4\u9ad8\uff0c\u66f4\u597d\u5462\u3002\u5728\u4e0a\u8ff0\u6bd4\u55bb\u4e2d:<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>\u6bcf\u4e2a\u5feb\u9012\u5458\u2014\u2014\u2014\u2014\u2014\u2014&gt;\u6bcf\u4e2a\u7ebf\u7a0b<\/li>\n<li>\u6bcf\u4e2a\u5feb\u9012\u2014\u2014\u2014\u2014\u2014\u2014\u2013&gt;\u6bcf\u4e2asocket(I\/O\u6d41)<\/li>\n<li>\u5feb\u9012\u7684\u9001\u8fbe\u5730\u70b9\u2014\u2014\u2014\u2014\u2013&gt;socket\u7684\u4e0d\u540c\u72b6\u6001<\/li>\n<li>\u5ba2\u6237\u9001\u5feb\u9012\u8bf7\u6c42\u2014\u2014\u2014\u2014\u2013&gt;\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42<\/li>\n<li>\u5c0f\u66f2\u7684\u7ecf\u8425\u65b9\u5f0f\u2014\u2014\u2014\u2014\u2013&gt;\u670d\u52a1\u7aef\u8fd0\u884c\u7684\u4ee3\u7801<\/li>\n<li>\u4e00\u8f86\u8f66\u2014\u2014\u2014\u2014\u2014\u2014\u2014-&gt;CPU\u7684\u6838\u6570<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>\u4e8e\u662f\u6211\u4eec\u6709\u5982\u4e0b\u7ed3\u8bba<\/p>\n<p>1\u3001\u7ecf\u8425\u65b9\u5f0f\u4e00\u5c31\u662f\u4f20\u7edf\u7684\u5e76\u53d1\u6a21\u578b\uff0c\u6bcf\u4e2aI\/O\u6d41(\u5feb\u9012)\u90fd\u6709\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b(\u5feb\u9012\u5458)\u7ba1\u7406\u3002<\/p>\n<p>2\u3001\u7ecf\u8425\u65b9\u5f0f\u4e8c\u5c31\u662fI\/O\u591a\u8def\u590d\u7528\u3002\u53ea\u6709\u5355\u4e2a\u7ebf\u7a0b(\u4e00\u4e2a\u5feb\u9012\u5458)\uff0c\u901a\u8fc7\u8ddf\u8e2a\u6bcf\u4e2aI\/O\u6d41\u7684\u72b6\u6001(\u6bcf\u4e2a\u5feb\u9012\u7684\u9001\u8fbe\u5730\u70b9)\uff0c\u6765\u7ba1\u7406\u591a\u4e2aI\/O\u6d41\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u4e0b\u9762\u7c7b\u6bd4\u5230\u771f\u5b9e\u7684redis\u7ebf\u7a0b\u6a21\u578b\uff0c\u5982\u56fe\u6240\u793a<\/p>\n<p><img decoding=\"async\" class=\"has\" src=\"https:\/\/img-blog.csdn.net\/20180531085855659\" alt=\"\" \/><br \/>\n\u53c2\u7167\u4e0a\u56fe\uff0c\u7b80\u5355\u6765\u8bf4\uff0c\u5c31\u662f\u3002\u6211\u4eec\u7684redis-client\u5728\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u4f1a\u4ea7\u751f\u5177\u6709\u4e0d\u540c\u4e8b\u4ef6\u7c7b\u578b\u7684socket\u3002\u5728\u670d\u52a1\u7aef\uff0c\u6709\u4e00\u6bb5I\/0\u591a\u8def\u590d\u7528\u7a0b\u5e8f\uff0c\u5c06\u5176\u7f6e\u5165\u961f\u5217\u4e4b\u4e2d\u3002\u7136\u540e\uff0c\u6587\u4ef6\u4e8b\u4ef6\u5206\u6d3e\u5668\uff0c\u4f9d\u6b21\u53bb\u961f\u5217\u4e2d\u53d6\uff0c\u8f6c\u53d1\u5230\u4e0d\u540c\u7684\u4e8b\u4ef6\u5904\u7406\u5668\u4e2d\u3002<\/p>\n<p>\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0c\u8fd9\u4e2aI\/O\u591a\u8def\u590d\u7528\u673a\u5236\uff0credis\u8fd8\u63d0\u4f9b\u4e86select\u3001epoll\u3001evport\u3001kqueue\u7b49\u591a\u8def\u590d\u7528\u51fd\u6570\u5e93\uff0c\u5927\u5bb6\u53ef\u4ee5\u81ea\u884c\u53bb\u4e86\u89e3\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3><a name=\"t6\"><\/a><strong>4\u3001redis\u7684\u6570\u636e\u7c7b\u578b\uff0c\u4ee5\u53ca\u6bcf\u79cd\u6570\u636e\u7c7b\u578b\u7684\u4f7f\u7528\u573a\u666f<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<p>\u5206\u6790\uff1a\u662f\u4e0d\u662f\u89c9\u5f97\u8fd9\u4e2a\u95ee\u9898\u5f88\u57fa\u7840\uff0c\u5176\u5b9e\u6211\u4e5f\u8fd9\u4e48\u89c9\u5f97\u3002\u7136\u800c\u6839\u636e\u9762\u8bd5\u7ecf\u9a8c\u53d1\u73b0\uff0c\u81f3\u5c11\u767e\u5206\u516b\u5341\u7684\u4eba\u7b54\u4e0d\u4e0a\u8fd9\u4e2a\u95ee\u9898\u3002\u5efa\u8bae\uff0c\u5728\u9879\u76ee\u4e2d\u7528\u5230\u540e\uff0c\u518d\u7c7b\u6bd4\u8bb0\u5fc6\uff0c\u4f53\u4f1a\u66f4\u6df1\uff0c\u4e0d\u8981\u786c\u8bb0\u3002\u57fa\u672c\u4e0a\uff0c\u4e00\u4e2a\u5408\u683c\u7684\u7a0b\u5e8f\u5458\uff0c\u4e94\u79cd\u7c7b\u578b\u90fd\u4f1a\u7528\u5230\u3002<\/p>\n<p>\u56de\u7b54\uff1a\u4e00\u5171\u4e94\u79cd<\/p>\n<p>(\u4e00)String<\/p>\n<p>\u8fd9\u4e2a\u5176\u5b9e\u6ca1\u5565\u597d\u8bf4\u7684\uff0c\u6700\u5e38\u89c4\u7684set\/get\u64cd\u4f5c\uff0cvalue\u53ef\u4ee5\u662fString\u4e5f\u53ef\u4ee5\u662f\u6570\u5b57\u3002\u4e00\u822c\u505a\u4e00\u4e9b\u590d\u6742\u7684\u8ba1\u6570\u529f\u80fd\u7684\u7f13\u5b58\u3002<\/p>\n<p>(\u4e8c)hash<\/p>\n<p>\u8fd9\u91ccvalue\u5b58\u653e\u7684\u662f\u7ed3\u6784\u5316\u7684\u5bf9\u8c61\uff0c\u6bd4\u8f83\u65b9\u4fbf\u7684\u5c31\u662f\u64cd\u4f5c\u5176\u4e2d\u7684\u67d0\u4e2a\u5b57\u6bb5\u3002\u535a\u4e3b\u5728\u505a\u5355\u70b9\u767b\u5f55\u7684\u65f6\u5019\uff0c\u5c31\u662f\u7528\u8fd9\u79cd\u6570\u636e\u7ed3\u6784\u5b58\u50a8\u7528\u6237\u4fe1\u606f\uff0c\u4ee5cookieId\u4f5c\u4e3akey\uff0c\u8bbe\u7f6e30\u5206\u949f\u4e3a\u7f13\u5b58\u8fc7\u671f\u65f6\u95f4\uff0c\u80fd\u5f88\u597d\u7684\u6a21\u62df\u51fa\u7c7b\u4f3csession\u7684\u6548\u679c\u3002<\/p>\n<p>(\u4e09)list<\/p>\n<p>\u4f7f\u7528List\u7684\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u505a\u7b80\u5355\u7684\u6d88\u606f\u961f\u5217\u7684\u529f\u80fd\u3002\u53e6\u5916\u8fd8\u6709\u4e00\u4e2a\u5c31\u662f\uff0c\u53ef\u4ee5\u5229\u7528lrange\u547d\u4ee4\uff0c\u505a\u57fa\u4e8eredis\u7684\u5206\u9875\u529f\u80fd\uff0c\u6027\u80fd\u6781\u4f73\uff0c\u7528\u6237\u4f53\u9a8c\u597d\u3002\u672c\u4eba\u8fd8\u7528\u4e00\u4e2a\u573a\u666f\uff0c\u5f88\u5408\u9002&#8212;\u53d6\u884c\u60c5\u4fe1\u606f\u3002\u5c31\u4e5f\u662f\u4e2a\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u573a\u666f\u3002LIST\u53ef\u4ee5\u5f88\u597d\u7684\u5b8c\u6210\u6392\u961f\uff0c\u5148\u8fdb\u5148\u51fa\u7684\u539f\u5219\u3002<\/p>\n<p>(\u56db)set<\/p>\n<p>\u56e0\u4e3aset\u5806\u653e\u7684\u662f\u4e00\u5806\u4e0d\u91cd\u590d\u503c\u7684\u96c6\u5408\u3002\u6240\u4ee5\u53ef\u4ee5\u505a\u5168\u5c40\u53bb\u91cd\u7684\u529f\u80fd\u3002\u4e3a\u4ec0\u4e48\u4e0d\u7528JVM\u81ea\u5e26\u7684Set\u8fdb\u884c\u53bb\u91cd\uff1f\u56e0\u4e3a\u6211\u4eec\u7684\u7cfb\u7edf\u4e00\u822c\u90fd\u662f\u96c6\u7fa4\u90e8\u7f72\uff0c\u4f7f\u7528JVM\u81ea\u5e26\u7684Set\uff0c\u6bd4\u8f83\u9ebb\u70e6\uff0c\u96be\u9053\u4e3a\u4e86\u4e00\u4e2a\u505a\u4e00\u4e2a\u5168\u5c40\u53bb\u91cd\uff0c\u518d\u8d77\u4e00\u4e2a\u516c\u5171\u670d\u52a1\uff0c\u592a\u9ebb\u70e6\u4e86\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5c31\u662f\u5229\u7528\u4ea4\u96c6\u3001\u5e76\u96c6\u3001\u5dee\u96c6\u7b49\u64cd\u4f5c\uff0c\u53ef\u4ee5\u8ba1\u7b97\u5171\u540c\u559c\u597d\uff0c\u5168\u90e8\u7684\u559c\u597d\uff0c\u81ea\u5df1\u72ec\u6709\u7684\u559c\u597d\u7b49\u529f\u80fd\u3002<\/p>\n<p>(\u4e94)sorted set<\/p>\n<p>sorted set\u591a\u4e86\u4e00\u4e2a\u6743\u91cd\u53c2\u6570score,\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u80fd\u591f\u6309score\u8fdb\u884c\u6392\u5217\u3002\u53ef\u4ee5\u505a\u6392\u884c\u699c\u5e94\u7528\uff0c\u53d6TOP N\u64cd\u4f5c\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3><a name=\"t7\"><\/a><strong>5\u3001redis\u7684\u8fc7\u671f\u7b56\u7565\u4ee5\u53ca\u5185\u5b58\u6dd8\u6c70\u673a\u5236<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<p>\u5206\u6790:\u8fd9\u4e2a\u95ee\u9898\u5176\u5b9e\u76f8\u5f53\u91cd\u8981\uff0c\u5230\u5e95redis\u6709\u6ca1\u7528\u5230\u5bb6\uff0c\u8fd9\u4e2a\u95ee\u9898\u5c31\u53ef\u4ee5\u770b\u51fa\u6765\u3002\u6bd4\u5982\u4f60redis\u53ea\u80fd\u5b585G\u6570\u636e\uff0c\u53ef\u662f\u4f60\u5199\u4e8610G\uff0c\u90a3\u4f1a\u52205G\u7684\u6570\u636e\u3002\u600e\u4e48\u5220\u7684\uff0c\u8fd9\u4e2a\u95ee\u9898\u601d\u8003\u8fc7\u4e48\uff1f\u8fd8\u6709\uff0c\u4f60\u7684\u6570\u636e\u5df2\u7ecf\u8bbe\u7f6e\u4e86\u8fc7\u671f\u65f6\u95f4\uff0c\u4f46\u662f\u65f6\u95f4\u5230\u4e86\uff0c\u5185\u5b58\u5360\u7528\u7387\u8fd8\u662f\u6bd4\u8f83\u9ad8\uff0c\u6709\u601d\u8003\u8fc7\u539f\u56e0\u4e48?<\/p>\n<p>\u56de\u7b54:<\/p>\n<p>redis\u91c7\u7528\u7684\u662f\u5b9a\u671f\u5220\u9664+\u60f0\u6027\u5220\u9664\u7b56\u7565\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\u4e0d\u7528\u5b9a\u65f6\u5220\u9664\u7b56\u7565?<\/p>\n<p>\u5b9a\u65f6\u5220\u9664,\u7528\u4e00\u4e2a\u5b9a\u65f6\u5668\u6765\u8d1f\u8d23\u76d1\u89c6key,\u8fc7\u671f\u5219\u81ea\u52a8\u5220\u9664\u3002\u867d\u7136\u5185\u5b58\u53ca\u65f6\u91ca\u653e\uff0c\u4f46\u662f\u5341\u5206\u6d88\u8017CPU\u8d44\u6e90\u3002\u5728\u5927\u5e76\u53d1\u8bf7\u6c42\u4e0b\uff0cCPU\u8981\u5c06\u65f6\u95f4\u5e94\u7528\u5728\u5904\u7406\u8bf7\u6c42\uff0c\u800c\u4e0d\u662f\u5220\u9664key,\u56e0\u6b64\u6ca1\u6709\u91c7\u7528\u8fd9\u4e00\u7b56\u7565.<\/p>\n<p>\u5b9a\u671f\u5220\u9664+\u60f0\u6027\u5220\u9664\u662f\u5982\u4f55\u5de5\u4f5c\u7684\u5462?<\/p>\n<p>\u5b9a\u671f\u5220\u9664\uff0credis\u9ed8\u8ba4\u6bcf\u4e2a100ms\u68c0\u67e5\uff0c\u662f\u5426\u6709\u8fc7\u671f\u7684key,\u6709\u8fc7\u671fkey\u5219\u5220\u9664\u3002\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0credis\u4e0d\u662f\u6bcf\u4e2a100ms\u5c06\u6240\u6709\u7684key\u68c0\u67e5\u4e00\u6b21\uff0c\u800c\u662f\u968f\u673a\u62bd\u53d6\u8fdb\u884c\u68c0\u67e5(\u5982\u679c\u6bcf\u9694100ms,\u5168\u90e8key\u8fdb\u884c\u68c0\u67e5\uff0credis\u5c82\u4e0d\u662f\u5361\u6b7b)\u3002\u56e0\u6b64\uff0c\u5982\u679c\u53ea\u91c7\u7528\u5b9a\u671f\u5220\u9664\u7b56\u7565\uff0c\u4f1a\u5bfc\u81f4\u5f88\u591akey\u5230\u65f6\u95f4\u6ca1\u6709\u5220\u9664\u3002<\/p>\n<p>\u4e8e\u662f\uff0c\u60f0\u6027\u5220\u9664\u6d3e\u4e0a\u7528\u573a\u3002\u4e5f\u5c31\u662f\u8bf4\u5728\u4f60\u83b7\u53d6\u67d0\u4e2akey\u7684\u65f6\u5019\uff0credis\u4f1a\u68c0\u67e5\u4e00\u4e0b\uff0c\u8fd9\u4e2akey\u5982\u679c\u8bbe\u7f6e\u4e86\u8fc7\u671f\u65f6\u95f4\u90a3\u4e48\u662f\u5426\u8fc7\u671f\u4e86\uff1f\u5982\u679c\u8fc7\u671f\u4e86\u6b64\u65f6\u5c31\u4f1a\u5220\u9664\u3002<\/p>\n<p>\u91c7\u7528\u5b9a\u671f\u5220\u9664+\u60f0\u6027\u5220\u9664\u5c31\u6ca1\u5176\u4ed6\u95ee\u9898\u4e86\u4e48?<\/p>\n<p>\u4e0d\u662f\u7684\uff0c\u5982\u679c\u5b9a\u671f\u5220\u9664\u6ca1\u5220\u9664key\u3002\u7136\u540e\u4f60\u4e5f\u6ca1\u5373\u65f6\u53bb\u8bf7\u6c42key\uff0c\u4e5f\u5c31\u662f\u8bf4\u60f0\u6027\u5220\u9664\u4e5f\u6ca1\u751f\u6548\u3002\u8fd9\u6837\uff0credis\u7684\u5185\u5b58\u4f1a\u8d8a\u6765\u8d8a\u9ad8\u3002\u90a3\u4e48\u5c31\u5e94\u8be5\u91c7\u7528\u5185\u5b58\u6dd8\u6c70\u673a\u5236\u3002<\/p>\n<p>\u5728redis.conf\u4e2d\u6709\u4e00\u884c\u914d\u7f6e<\/p>\n<p>&nbsp;<\/p>\n<blockquote><p># maxmemory-policy volatile-lru<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>\u8be5\u914d\u7f6e\u5c31\u662f\u914d\u5185\u5b58\u6dd8\u6c70\u7b56\u7565\u7684(\u4ec0\u4e48\uff0c\u4f60\u6ca1\u914d\u8fc7\uff1f\u597d\u597d\u53cd\u7701\u4e00\u4e0b\u81ea\u5df1)<\/p>\n<p>&nbsp;<\/p>\n<p>1\uff09noeviction\uff1a\u5f53\u5185\u5b58\u4e0d\u8db3\u4ee5\u5bb9\u7eb3\u65b0\u5199\u5165\u6570\u636e\u65f6\uff0c\u65b0\u5199\u5165\u64cd\u4f5c\u4f1a\u62a5\u9519\u3002\u5e94\u8be5\u6ca1\u4eba\u7528\u5427\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>2\uff09allkeys-lru\uff1a\u5f53\u5185\u5b58\u4e0d\u8db3\u4ee5\u5bb9\u7eb3\u65b0\u5199\u5165\u6570\u636e\u65f6\uff0c\u5728\u952e\u7a7a\u95f4\u4e2d\uff0c\u79fb\u9664\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684key\u3002\u63a8\u8350\u4f7f\u7528\uff0c\u76ee\u524d\u9879\u76ee\u5728\u7528\u8fd9\u79cd\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>3\uff09allkeys-random\uff1a\u5f53\u5185\u5b58\u4e0d\u8db3\u4ee5\u5bb9\u7eb3\u65b0\u5199\u5165\u6570\u636e\u65f6\uff0c\u5728\u952e\u7a7a\u95f4\u4e2d\uff0c\u968f\u673a\u79fb\u9664\u67d0\u4e2akey\u3002\u5e94\u8be5\u4e5f\u6ca1\u4eba\u7528\u5427\uff0c\u4f60\u4e0d\u5220\u6700\u5c11\u4f7f\u7528Key,\u53bb\u968f\u673a\u5220\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>4\uff09volatile-lru\uff1a\u5f53\u5185\u5b58\u4e0d\u8db3\u4ee5\u5bb9\u7eb3\u65b0\u5199\u5165\u6570\u636e\u65f6\uff0c\u5728\u8bbe\u7f6e\u4e86\u8fc7\u671f\u65f6\u95f4\u7684\u952e\u7a7a\u95f4\u4e2d\uff0c\u79fb\u9664\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684key\u3002\u8fd9\u79cd\u60c5\u51b5\u4e00\u822c\u662f\u628aredis\u65e2\u5f53\u7f13\u5b58\uff0c\u53c8\u505a\u6301\u4e45\u5316\u5b58\u50a8\u7684\u65f6\u5019\u624d\u7528\u3002\u4e0d\u63a8\u8350<\/p>\n<p>&nbsp;<\/p>\n<p>5\uff09volatile-random\uff1a\u5f53\u5185\u5b58\u4e0d\u8db3\u4ee5\u5bb9\u7eb3\u65b0\u5199\u5165\u6570\u636e\u65f6\uff0c\u5728\u8bbe\u7f6e\u4e86\u8fc7\u671f\u65f6\u95f4\u7684\u952e\u7a7a\u95f4\u4e2d\uff0c\u968f\u673a\u79fb\u9664\u67d0\u4e2akey\u3002\u4f9d\u7136\u4e0d\u63a8\u8350<\/p>\n<p>&nbsp;<\/p>\n<p>6\uff09volatile-ttl\uff1a\u5f53\u5185\u5b58\u4e0d\u8db3\u4ee5\u5bb9\u7eb3\u65b0\u5199\u5165\u6570\u636e\u65f6\uff0c\u5728\u8bbe\u7f6e\u4e86\u8fc7\u671f\u65f6\u95f4\u7684\u952e\u7a7a\u95f4\u4e2d\uff0c\u6709\u66f4\u65e9\u8fc7\u671f\u65f6\u95f4\u7684key\u4f18\u5148\u79fb\u9664\u3002\u4e0d\u63a8\u8350<\/p>\n<p>&nbsp;<\/p>\n<p>ps\uff1a\u5982\u679c\u6ca1\u6709\u8bbe\u7f6e expire \u7684key, \u4e0d\u6ee1\u8db3\u5148\u51b3\u6761\u4ef6(prerequisites); \u90a3\u4e48 volatile-lru, volatile-random \u548c volatile-ttl \u7b56\u7565\u7684\u884c\u4e3a, \u548c noeviction(\u4e0d\u5220\u9664) \u57fa\u672c\u4e0a\u4e00\u81f4\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>6\u3001redis\u548c\u6570\u636e\u5e93\u53cc\u5199\u4e00\u81f4\u6027\u95ee\u9898<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>\u5206\u6790:\u4e00\u81f4\u6027\u95ee\u9898\u662f\u5206\u5e03\u5f0f\u5e38\u89c1\u95ee\u9898\uff0c\u8fd8\u53ef\u4ee5\u518d\u5206\u4e3a\u6700\u7ec8\u4e00\u81f4\u6027\u548c\u5f3a\u4e00\u81f4\u6027\u3002\u6570\u636e\u5e93\u548c\u7f13\u5b58\u53cc\u5199\uff0c\u5c31\u5fc5\u7136\u4f1a\u5b58\u5728\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002\u7b54\u8fd9\u4e2a\u95ee\u9898\uff0c\u5148\u660e\u767d\u4e00\u4e2a\u524d\u63d0\u3002\u5c31\u662f\u5982\u679c\u5bf9\u6570\u636e\u6709\u5f3a\u4e00\u81f4\u6027\u8981\u6c42\uff0c\u4e0d\u80fd\u653e\u7f13\u5b58\u3002\u6211\u4eec\u6240\u505a\u7684\u4e00\u5207\uff0c\u53ea\u80fd\u4fdd\u8bc1\u6700\u7ec8\u4e00\u81f4\u6027\u3002\u53e6\u5916\uff0c\u6211\u4eec\u6240\u505a\u7684\u65b9\u6848\u5176\u5b9e\u4ece\u6839\u672c\u4e0a\u6765\u8bf4\uff0c\u53ea\u80fd\u8bf4\u964d\u4f4e\u4e0d\u4e00\u81f4\u53d1\u751f\u7684\u6982\u7387\uff0c\u65e0\u6cd5\u5b8c\u5168\u907f\u514d\u3002\u56e0\u6b64\uff0c\u6709\u5f3a\u4e00\u81f4\u6027\u8981\u6c42\u7684\u6570\u636e\uff0c\u4e0d\u80fd\u653e\u7f13\u5b58\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u9996\u5148\uff0c\u91c7\u53d6\u6b63\u786e\u66f4\u65b0\u7b56\u7565\uff0c\u5148\u66f4\u65b0\u6570\u636e\u5e93\uff0c\u518d\u5220\u7f13\u5b58\u3002\u5176\u6b21\uff0c\u56e0\u4e3a\u53ef\u80fd\u5b58\u5728\u5220\u9664\u7f13\u5b58\u5931\u8d25\u7684\u95ee\u9898\uff0c\u63d0\u4f9b\u4e00\u4e2a\u8865\u507f\u63aa\u65bd\u5373\u53ef\uff0c\u4f8b\u5982\u5229\u7528\u6d88\u606f\u961f\u5217\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>7\u3001\u5982\u4f55\u5e94\u5bf9\u7f13\u5b58\u7a7f\u900f\u548c\u7f13\u5b58\u96ea\u5d29\u95ee\u9898<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>\u5206\u6790:\u8fd9\u4e24\u4e2a\u95ee\u9898\uff0c\u8bf4\u53e5\u5b9e\u5728\u8bdd\uff0c\u4e00\u822c\u4e2d\u5c0f\u578b\u4f20\u7edf\u8f6f\u4ef6\u4f01\u4e1a\uff0c\u5f88\u96be\u78b0\u5230\u8fd9\u4e2a\u95ee\u9898\u3002\u5982\u679c\u6709\u5927\u5e76\u53d1\u7684\u9879\u76ee\uff0c\u6d41\u91cf\u6709\u51e0\u767e\u4e07\u5de6\u53f3\u3002\u8fd9\u4e24\u4e2a\u95ee\u9898\u4e00\u5b9a\u8981\u6df1\u523b\u8003\u8651\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u56de\u7b54:\u5982\u4e0b\u6240\u793a<\/p>\n<p>&nbsp;<\/p>\n<p>\u7f13\u5b58\u7a7f\u900f\uff0c\u5373\u9ed1\u5ba2\u6545\u610f\u53bb\u8bf7\u6c42\u7f13\u5b58\u4e2d\u4e0d\u5b58\u5728\u7684\u6570\u636e\uff0c\u5bfc\u81f4\u6240\u6709\u7684\u8bf7\u6c42\u90fd\u603c\u5230\u6570\u636e\u5e93\u4e0a\uff0c\u4ece\u800c\u6570\u636e\u5e93\u8fde\u63a5\u5f02\u5e38\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u89e3\u51b3\u65b9\u6848:<\/p>\n<p>&nbsp;<\/p>\n<p>(\u4e00)\u5229\u7528\u4e92\u65a5\u9501\uff0c\u7f13\u5b58\u5931\u6548\u7684\u65f6\u5019\uff0c\u5148\u53bb\u83b7\u5f97\u9501\uff0c\u5f97\u5230\u9501\u4e86\uff0c\u518d\u53bb\u8bf7\u6c42\u6570\u636e\u5e93\u3002\u6ca1\u5f97\u5230\u9501\uff0c\u5219\u4f11\u7720\u4e00\u6bb5\u65f6\u95f4\u91cd\u8bd5<\/p>\n<p>&nbsp;<\/p>\n<p>(\u4e8c)\u91c7\u7528\u5f02\u6b65\u66f4\u65b0\u7b56\u7565\uff0c\u65e0\u8bbakey\u662f\u5426\u53d6\u5230\u503c\uff0c\u90fd\u76f4\u63a5\u8fd4\u56de\u3002value\u503c\u4e2d\u7ef4\u62a4\u4e00\u4e2a\u7f13\u5b58\u5931\u6548\u65f6\u95f4\uff0c\u7f13\u5b58\u5982\u679c\u8fc7\u671f\uff0c\u5f02\u6b65\u8d77\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u8bfb\u6570\u636e\u5e93\uff0c\u66f4\u65b0\u7f13\u5b58\u3002\u9700\u8981\u505a\u7f13\u5b58\u9884\u70ed(\u9879\u76ee\u542f\u52a8\u524d\uff0c\u5148\u52a0\u8f7d\u7f13\u5b58)\u64cd\u4f5c\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>(\u4e09)\u63d0\u4f9b\u4e00\u4e2a\u80fd\u8fc5\u901f\u5224\u65ad\u8bf7\u6c42\u662f\u5426\u6709\u6548\u7684\u62e6\u622a\u673a\u5236\uff0c\u6bd4\u5982\uff0c\u5229\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u5185\u90e8\u7ef4\u62a4\u4e00\u7cfb\u5217\u5408\u6cd5\u6709\u6548\u7684key\u3002\u8fc5\u901f\u5224\u65ad\u51fa\uff0c\u8bf7\u6c42\u6240\u643a\u5e26\u7684Key\u662f\u5426\u5408\u6cd5\u6709\u6548\u3002\u5982\u679c\u4e0d\u5408\u6cd5\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u7f13\u5b58\u96ea\u5d29\uff0c\u5373\u7f13\u5b58\u540c\u4e00\u65f6\u95f4\u5927\u9762\u79ef\u7684\u5931\u6548\uff0c\u8fd9\u4e2a\u65f6\u5019\u53c8\u6765\u4e86\u4e00\u6ce2\u8bf7\u6c42\uff0c\u7ed3\u679c\u8bf7\u6c42\u90fd\u603c\u5230\u6570\u636e\u5e93\u4e0a\uff0c\u4ece\u800c\u5bfc\u81f4\u6570\u636e\u5e93\u8fde\u63a5\u5f02\u5e38\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u89e3\u51b3\u65b9\u6848:<\/p>\n<p>&nbsp;<\/p>\n<p>(\u4e00)\u7ed9\u7f13\u5b58\u7684\u5931\u6548\u65f6\u95f4\uff0c\u52a0\u4e0a\u4e00\u4e2a\u968f\u673a\u503c\uff0c\u907f\u514d\u96c6\u4f53\u5931\u6548\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>(\u4e8c)\u4f7f\u7528\u4e92\u65a5\u9501\uff0c\u4f46\u662f\u8be5\u65b9\u6848\u541e\u5410\u91cf\u660e\u663e\u4e0b\u964d\u4e86\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>(\u4e09)\u53cc\u7f13\u5b58\u3002\u6211\u4eec\u6709\u4e24\u4e2a\u7f13\u5b58\uff0c\u7f13\u5b58A\u548c\u7f13\u5b58B\u3002\u7f13\u5b58A\u7684\u5931\u6548\u65f6\u95f4\u4e3a20\u5206\u949f\uff0c\u7f13\u5b58B\u4e0d\u8bbe\u5931\u6548\u65f6\u95f4\u3002\u81ea\u5df1\u505a\u7f13\u5b58\u9884\u70ed\u64cd\u4f5c\u3002\u7136\u540e\u7ec6\u5206\u4ee5\u4e0b\u51e0\u4e2a\u5c0f\u70b9<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>I \u4ece\u7f13\u5b58A\u8bfb\u6570\u636e\u5e93\uff0c\u6709\u5219\u76f4\u63a5\u8fd4\u56de<\/li>\n<li>II A\u6ca1\u6709\u6570\u636e\uff0c\u76f4\u63a5\u4eceB\u8bfb\u6570\u636e\uff0c\u76f4\u63a5\u8fd4\u56de\uff0c\u5e76\u4e14\u5f02\u6b65\u542f\u52a8\u4e00\u4e2a\u66f4\u65b0\u7ebf\u7a0b\u3002<\/li>\n<li>III \u66f4\u65b0\u7ebf\u7a0b\u540c\u65f6\u66f4\u65b0\u7f13\u5b58A\u548c\u7f13\u5b58B\u3002<\/li>\n<\/ul>\n<h3><\/h3>\n<h3><a name=\"t9\"><\/a><strong>8\u3001\u5982\u4f55\u89e3\u51b3redis\u7684\u5e76\u53d1\u7ade\u4e89key\u95ee\u9898<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<p>\u5206\u6790:\u8fd9\u4e2a\u95ee\u9898\u5927\u81f4\u5c31\u662f\uff0c\u540c\u65f6\u6709\u591a\u4e2a\u5b50\u7cfb\u7edf\u53bbset\u4e00\u4e2akey\u3002\u8fd9\u4e2a\u65f6\u5019\u8981\u6ce8\u610f\u4ec0\u4e48\u5462\uff1f\u5927\u5bb6\u601d\u8003\u8fc7\u4e48\u3002\u9700\u8981\u8bf4\u660e\u4e00\u4e0b\uff0c\u535a\u4e3b\u63d0\u524d\u767e\u5ea6\u4e86\u4e00\u4e0b\uff0c\u53d1\u73b0\u7b54\u6848\u57fa\u672c\u90fd\u662f\u63a8\u8350\u7528redis\u4e8b\u52a1\u673a\u5236\u3002\u535a\u4e3b\u4e0d\u63a8\u8350\u4f7f\u7528redis\u7684\u4e8b\u52a1\u673a\u5236\u3002\u56e0\u4e3a\u6211\u4eec\u7684\u751f\u4ea7\u73af\u5883\uff0c\u57fa\u672c\u90fd\u662fredis\u96c6\u7fa4\u73af\u5883\uff0c\u505a\u4e86\u6570\u636e\u5206\u7247\u64cd\u4f5c\u3002\u4f60\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u6709\u6d89\u53ca\u5230\u591a\u4e2akey\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u8fd9\u591a\u4e2akey\u4e0d\u4e00\u5b9a\u90fd\u5b58\u50a8\u5728\u540c\u4e00\u4e2aredis-server\u4e0a\u3002\u56e0\u6b64\uff0credis\u7684\u4e8b\u52a1\u673a\u5236\uff0c\u5341\u5206\u9e21\u808b\u3002<\/p>\n<p>\u56de\u7b54:\u5982\u4e0b\u6240\u793a<\/p>\n<p>(1)\u5982\u679c\u5bf9\u8fd9\u4e2akey\u64cd\u4f5c\uff0c\u4e0d\u8981\u6c42\u987a\u5e8f<\/p>\n<p>\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u51c6\u5907\u4e00\u4e2a\u5206\u5e03\u5f0f\u9501\uff0c\u5927\u5bb6\u53bb\u62a2\u9501\uff0c\u62a2\u5230\u9501\u5c31\u505aset\u64cd\u4f5c\u5373\u53ef\uff0c\u6bd4\u8f83\u7b80\u5355\u3002<\/p>\n<p>(2)\u5982\u679c\u5bf9\u8fd9\u4e2akey\u64cd\u4f5c\uff0c\u8981\u6c42\u987a\u5e8f<\/p>\n<p>\u5047\u8bbe\u6709\u4e00\u4e2akey1,\u7cfb\u7edfA\u9700\u8981\u5c06key1\u8bbe\u7f6e\u4e3avalueA,\u7cfb\u7edfB\u9700\u8981\u5c06key1\u8bbe\u7f6e\u4e3avalueB,\u7cfb\u7edfC\u9700\u8981\u5c06key1\u8bbe\u7f6e\u4e3avalueC.<\/p>\n<p>\u671f\u671b\u6309\u7167key1\u7684value\u503c\u6309\u7167 valueA\u2013&gt;valueB\u2013&gt;valueC\u7684\u987a\u5e8f\u53d8\u5316\u3002\u8fd9\u79cd\u65f6\u5019\u6211\u4eec\u5728\u6570\u636e\u5199\u5165\u6570\u636e\u5e93\u7684\u65f6\u5019\uff0c\u9700\u8981\u4fdd\u5b58\u4e00\u4e2a\u65f6\u95f4\u6233\u3002\u5047\u8bbe\u65f6\u95f4\u6233\u5982\u4e0b<\/p>\n<p>&nbsp;<\/p>\n<blockquote><p>\u7cfb\u7edfA\u00a0key\u00a01\u00a0{valueA\u00a0\u00a03:00}<\/p>\n<p>\u7cfb\u7edfB\u00a0key\u00a01\u00a0{valueB\u00a0\u00a03:05}<\/p>\n<p>\u7cfb\u7edfC\u00a0key\u00a01\u00a0{valueC\u00a0\u00a03:10}<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>\u90a3\u4e48\uff0c\u5047\u8bbe\u8fd9\u4f1a\u7cfb\u7edfB\u5148\u62a2\u5230\u9501\uff0c\u5c06key1\u8bbe\u7f6e\u4e3a{valueB 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