{"id":3942,"date":"2019-10-23T14:54:24","date_gmt":"2019-10-23T06:54:24","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=3942"},"modified":"2019-10-23T14:54:24","modified_gmt":"2019-10-23T06:54:24","slug":"%e5%9f%ba%e4%ba%8eredis%e5%ae%9e%e7%8e%b0%e6%8e%92%e8%a1%8c%e6%a6%9c%e5%91%a8%e6%9c%9f%e6%a6%9c%e4%b8%8e%e6%9c%80%e8%bf%91n%e6%9c%9f%e6%a6%9c","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/3942","title":{"rendered":"\u57fa\u4e8eRedis\u5b9e\u73b0\u6392\u884c\u699c\u5468\u671f\u699c\u4e0e\u6700\u8fd1N\u671f\u699c"},"content":{"rendered":"
\n
\n

\u539f\u6587\u5730\u5740<\/a><\/p>\n

 <\/p>\n<\/div>\n

\n

\u524d\u8a00<\/h1>\n

\u4e1a\u52a1\u5df2\u57fa\u4e8eRedis<\/a>\u5b9e\u73b0\u4e86\u4e00\u4e2a\u9ad8\u53ef\u7528\u7684\u6392\u884c\u699c\u670d\u52a1\uff0c\u957f\u671f\u4ee5\u6765\u76f8\u5b89\u65e0\u4e8b\u3002\u6709\u4e00\u5929\uff0c\u4ea7\u54c1\u8bf4\uff1a\u6211\u8981\u4e00\u4e2a\u6309\u5468\u6392\u540d\u7684\u6392\u884c\u699c\uff0c\u4ee5\u53cd\u6620\u672c\u5468\u5185\u7528\u6237\u7684\u6d3b\u8dc3\u60c5\u51b5\u3002\u4e8e\u662f\u5468\u699c\uff08\u6309\u5468\u91cd\u7f6e\u66f4\u65b0\u7684\u699c\u5355\uff09\u8bde\u751f\u4e86\u3002\u4e3a\u4e86\u6ee1\u8db3\u4ea7\u54c1\u591a\u53d8\u7684\u9700\u6c42\uff0c\u6211\u4eec\u4e00\u5e76\u5b9e\u73b0\u4e86\u5c0f\u65f6\u699c\u3001\u65e5\u699c\u3001\u5468\u699c\u3001\u6708\u699c\u51e0\u79cd\u5468\u671f\u699c\u3002\u672c\u4ee5\u4e3a\u53ef\u957f\u6cbb\u4e45\u5b89\u4e86\uff0c\u53c8\u6709\u4e00\u5929\uff0c\u4ea7\u54c1\u4f53\u9a8c\u4e1a\u52a1\u540e\u8bf4\uff1a\u6211\u60f3\u8981\u4e00\u4e2a\u6700\u8fd17\u5929\u699c\uff0c\u53cd\u6620\u6700\u8fd1\u4e00\u6bb5\u65f6\u95f4\u7684\u7528\u6237\u6d3b\u8dc3\u60c5\u51b5\uff0c\u4e0d\u60f3\u8ba9\u5386\u53f2\u7684\u9ad8\u5206\u7528\u6237\u957f\u671f\u5360\u636e\u699c\u9996\uff0c\u53ef\u5426\uff1f\u4e8e\u662f\uff0c\u6eda\u52a8\u699c\uff08\u6700\u8fd1N\u671f\u699c\uff09\u7684\u9700\u6c42\u8bde\u751f\u4e86\u3002<\/p>\n

\u5468\u671f\u699c<\/h1>\n

\u5468\u671f\u699c\u5b9e\u73b0\u8fd8\u662f\u5f88\u5bb9\u6613\u7684\uff0c\u7ed9\u6bcf\u4e2a\u5468\u671f\u7b97\u51fa\u4e00\u4e2a\u5e8f\u53f7\uff0c\u4f5c\u4e3a\u699c\u5355\u540d\u540e\u7f00\uff0c\u8fdb\u5165\u65b0\u7684\u5468\u671f\u81ea\u7136\u5207\u6362\u8bfb\u5199\u65b0\u699c\u5355\uff0c\u5e73\u6ed1\u8fc7\u5ea6\u3002\u4ee5\u65e5\u699c\u4e3a\u4f8b\uff0c\u6839\u636e\u65f6\u95f4\u6233t<\/span><\/span>s<\/span><\/span><\/span><\/span><\/span>\u8ba1\u7b97\u6bcf\u65e5\u5e8f\u53f7s<\/span><\/span>=<\/span><\/span>t<\/span><\/span>s<\/span><\/span>\/<\/span><\/span><\/span><\/span>86400<\/span><\/span><\/span><\/span><\/span>\uff0c\u4ee5\u65e5\u5e8f\u53f7s<\/span><\/span><\/span><\/span><\/span>\u4f5c\u4e3a\u540e\u7f00\u5373\u53ef\u5b9e\u73b0\u96f6\u70b9\u540e\u81ea\u52a8\u8bfb\u5199\u65b0\u65e5\u699c\u3002\u5c0f\u65f6\u699c\u4e0e\u6b64\u96f7\u540c\uff0c\u4e0d\u518d\u8d58\u8ff0\u3002<\/p>\n

\u5bf9\u4e8e\u5468\u699c\uff0c\u53ef\u4ee5\u9009\u5b9a\u67d0\u4e00\u4e2a\u5468\u4e00\uff08\u6216\u5468\u65e5\uff0c\u770b\u9700\u6c42\uff09\u7684\u65f6\u95f4\u6233\u4e3a\u57fa\u51c6\uff0c\u8ba1\u7b97\u57fa\u51c6\u5230\u5f53\u524d\u7ecf\u8fc7\u7684\u5468\u6570\u4e3a\u5468\u5e8f\u53f7\uff0c\u4ee5\u6b64\u4f5c\u4e3a\u699c\u5355\u540e\u7f00\u3002<\/p>\n

\u5bf9\u4e8e\u6708\u699c\uff0c\u7a0d\u6709\u4e0d\u540c\uff0c\u56e0\u4e3a\u6708\u4efd\u5929\u6570\u4e0d\u56fa\u5b9a\uff0c\u6240\u4ee5\u4e0d\u80fd\u6309\u7167\u4e0a\u8ff0\u65b9\u6cd5\u8ba1\u7b97\u3002\u4f46\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u65f6\u95f4\u6233\u53d6\u5f97\u5e74\u3001\u6708\u4fe1\u606f\uff0c\u4ee5\u5e74\u6708\u505a\u6807\u5fd7\uff08\u5982201810\uff09\u540e\u7f00\uff0c\u5373\u53ef\u5b9e\u73b0\u6708\u699c\u3002<\/p>\n

\u6eda\u52a8\u699c<\/h1>\n

\u65b9\u6848\u63a2\u8ba8<\/h2>\n

\u6eda\u52a8\u699c\u9700\u8981\u8003\u8651\u591a\u4e2a\u5468\u671f\u699c\u6570\u636e\u7684\u805a\u5408\u4e0e\u81ea\u52a8\u8fed\u4ee3\u66f4\u65b0\uff0c\u5b9e\u73b0\u8d77\u6765\u5c31\u6ca1\u90a3\u4e48\u5bb9\u6613\u4e86\u3002\u4e0b\u9762\u5206\u6790\u51e0\u4e2a\u65b9\u6848\u3002<\/p>\n

\u65b9\u68481\uff1a\u6bcf\u65e5\u4e00\u4e2a\u6eda\u52a8\u699c\uff0c\u5f53\u65e5\u79bb\u7ebf\u8865\u9f50\u6570\u636e<\/h3>\n

\u8fd8\u4ee5\u65e5\u699c\u4e3a\u4f8b\uff0c\u6700\u8fd1N\u5929\u699c\u5c31\u662f\u628a\u524dN-1\u5929\u5230\u5f53\u5929\u7684\u6bcf\u4e00\u4e2a\u65e5\u699c\u699c\u5355\u7d2f\u52a0\u5373\u53ef\uff0c\u6bd4\u5982\u6700\u8fd17\u5929\u699c\uff0c\u5c31\u662f\u524d6\u5929\u5230\u5f53\u5929\u7684\u6bcf\u4e00\u4e2a\u65e5\u699c\u4e2d\u76f8\u540c\u5143\u7d20\u6570\u636e\u7d2f\u52a0\u3002\u56e0\u6b64\uff0c\u6700\u76f4\u89c2\u7684\u4e00\u4e2a\u65b9\u6848\u662f\uff1a\u9996\u5148\u8bb0\u5f55\u6bcf\u5929\u7684\u6392\u884c\u699cR\uff0c\u90a3\u4e48\u7b2ci\u5929\u7684\u6700\u8fd1N\u5929\u699cS<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span>=<\/span><\/span>\u2211<\/span><\/span><\/span>N<\/span><\/span>\u2212<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span>n<\/span><\/span>=<\/span><\/span>0<\/span><\/span><\/span><\/span><\/span><\/span><\/span>R<\/span><\/span><\/span>i<\/span><\/span>\u2212<\/span><\/span>n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\uff0c\u5176\u4e2d\uff0cR<\/span><\/span><\/span>i<\/span><\/span>\u2212<\/span><\/span>x<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u8868\u793a\u7b2ci\u5929\u7684\u524dx\u5929\u7684\u65e5\u699c\u3002\u5b9e\u73b0\u4e0a\uff0c\u53ef\u4ee5\u6bcf\u65e5\u751f\u6210\u4e00\u4e2a\u6eda\u52a8\u699cS\u548c\u5f53\u5929\u65e5\u699cR\uff0c\u52a0\u5206\u65f6\u540c\u65f6\u5199\u5165S\u548cR\uff0c\u6bcf\u65e5\u96f6\u70b9\u540e\u8dd1\u5de5\u5177\u5c06\u524dN-1\u5929\u6570\u636e\u7d2f\u52a0\u5199\u5165\u5f53\u65e5\u6eda\u52a8\u699cS\u3002<\/p>\n

\u8fd9\u4e2a\u65b9\u6848\u7684\u4f18\u70b9\u662f\u76f4\u89c2\uff0c\u5b9e\u73b0\u7b80\u5355\u3002\u4f46\u7f3a\u70b9\u4e5f\u5f88\u660e\u663e\uff0c\u4e00\u662f\u6bcf\u65e5\u4e00\u4e2a\u6eda\u52a8\u699c\uff0c\u6d88\u8017\u5185\u5b58\u8f83\u591a\uff1b\u4e8c\u662f\u6570\u636e\u66f4\u65b0\u4e0d\u5b9e\u65f6\uff0c\u9700\u8981\u7b49\u5f85\u79bb\u7ebf\u4f5c\u4e1a\u5b8c\u6210\u7d2f\u52a0\u540eS\u4e2d\u7684\u6570\u636e\u624d\u5b8c\u5168\u6b63\u786e\uff1b\u4e09\u662f\u65f6\u95f4\u590d\u6742\u5ea6\u9ad8\uff0c7\u5929\u699c\u8fd8\u597d\uff0c\u53ea\u9700\u8981\u8bfb\u8fc7\u53bb6\u5929\u6570\u636e\uff0c\u5982\u679c\u662f100\u5929\u699c\uff0c\u8be5\u65b9\u6848\u9700\u8981\u8bfb\u8fc7\u53bb99\u5929\u699c\uff0c\u663e\u7136\u4e0d\u53ef\u63a5\u53d7\u3002<\/p>\n

\u65b9\u68482\uff1a\u5168\u5c40\u4e00\u4e2a\u6eda\u52a8\u699c\uff0c\u5f53\u65e5\u79bb\u7ebf\u8865\u9f50\u6570\u636e<\/h3>\n

\u57fa\u4e8e\u65b9\u68481\uff0c\u5982\u679c\u4e1a\u52a1\u65e0\u9700\u67e5\u8be2\u5386\u53f2\u7684S\uff0c\u53ef\u4ee5\u53ea\u4f7f\u7528\u5168\u5c40\u4e00\u4e2aS\uff0c\u65e0\u9700\u6bcf\u65e5\u521b\u5efa\u4e00\u4e2aS<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3002\u52a0\u5206\u64cd\u4f5c\u8fd8\u662f\u540c\u65f6\u52a0\u5f53\u65e5\u7684R<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u548c\u5168\u5c40\u552f\u4e00\u7684S\uff0c\u4f46\u6bcf\u65e5\u96f6\u70b9\u7684\u79bb\u7ebf\u4f5c\u4e1a\u6539\u4e3a\u4eceS\u4e2d\u51cf\u53bbR<\/span><\/span><\/span>i<\/span><\/span>\u2212<\/span><\/span>(<\/span><\/span>N<\/span><\/span>\u2212<\/span><\/span>1<\/span><\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u7684\u6570\u636e\uff08\u5373\u5c06\u6700\u65e9\u4e00\u5929\u7684\u6570\u636e\u6dd8\u6c70\uff0c\u4ece\u800c\u5b9e\u73b0S\u7684\u8ba1\u6570\u6eda\u52a8\uff09\u3002<\/p>\n

\u6b64\u65b9\u6848\u51cf\u5c11\u4e86\u5185\u5b58\u4f7f\u7528\uff0c\u540c\u65f6\u79bb\u7ebf\u4efb\u52a1\u6bcf\u6b21\u53ea\u9700\u8bfb\u53d6\u4e00\u4e2a\u65e5\u699c\u505a\u51cf\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(1)\uff1b\u4f46\u4ecd\u9700\u8981\u79bb\u7ebf\u4f5c\u4e1a\u5b8c\u6210\u624d\u80fd\u4fdd\u8bc1\u6570\u636e\u6b63\u786e\u6027\uff0c\u8fd8\u662f\u65e0\u6cd5\u505a\u5230\u5e73\u6ed1\u8fc7\u6e21\u3002<\/p>\n

\u65b9\u68483\uff1a\u6bcf\u65e5\u4e00\u4e2a\u6eda\u52a8\u699c\uff0c\u5b9e\u65f6\u66f4\u65b0<\/h3>\n

\u8981\u505a\u5230\u6bcf\u65e5\u96f6\u70b9\u540e\u699c\u5355\u5b9e\u65f6\u751f\u6548\uff0c\u800c\u4e0d\u9700\u8981\u7b49\u5f85\u79bb\u7ebf\u4f5c\u4e1a\u7684\u5b8c\u6210\uff0c\u4e00\u79cd\u65b9\u6848\u662f\u9884\u5199\u672a\u6765\u7684\u699c\u5355\u3002\u4e0d\u96be\u5f97\u51fa\uff0c\u5f53\u65e5\u5206\u6570\u4f1a\u8ba1\u5165\u5f80\u540eN-1\u5929\u7684\u6eda\u52a8\u699c\u4e2d\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u5199\u5f53\u5929\u7684\u6eda\u52a8\u699cS<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u7684\u540c\u65f6\uff0c\u5199\u5f80\u540eN-1\u5929\u7684\u699c\u5355S<\/span><\/span><\/span>i<\/span><\/span>+<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u5230S<\/span><\/span><\/span>i<\/span><\/span>+<\/span><\/span>N<\/span><\/span>\u2212<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n

\u8be5\u65b9\u6848\u4e0d\u4ec5\u80fd\u8131\u79bb\u79bb\u7ebf\u4f5c\u4e1a\u505a\u5230\u5b9e\u65f6\u66f4\u65b0\uff0c\u4e14\u53ef\u4ee5\u7701\u7565\u6bcf\u5929\u7684\u65e5\u699c\u3002\u4f46\u7f3a\u70b9\u4e5f\u4e0d\u96be\u770b\u51fa\uff0c\u5bf9\u4e8e7\u5929\u6eda\u52a8\u699c\uff0c\u6bcf\u6b21\u5199\u64cd\u4f5c\u9700\u8981\u66f4\u65b07\u4e2a\u699c\u5355\uff0c\u5199\u5165\u91cf\u5c0f\u65f6\u8fd8\u52c9\u5f3a\u80fd\u63a5\u53d7\uff0c\u5982\u679c\u5199\u64cd\u4f5c\u91cf\u5927\u6216\u8005\u9700\u8981\u7684\u662f30\u5929\u300160\u5929\u6eda\u52a8\u699c\uff0c\u6b64\u65b9\u6848\u53ef\u884c\u6027\u51e0\u4e4e\u4e3a\u96f6\u3002<\/p>\n

\u65b9\u68484\uff1a\u5b9e\u65f6\u66f4\u65b0\uff0c\u5e38\u6570\u6b21\u5199\u64cd\u4f5c<\/h3>\n

\u6709\u4e0d\u6709\u529e\u6cd5\u505a\u5230\u65e2\u80fd\u5b9e\u65f6\u66f4\u65b0\uff0c\u5199\u699c\u6570\u91cf\u4e5f\u4e0d\u968fN\u7684\u589e\u52a0\u800c\u589e\u52a0\u5462\uff1f\u4e0d\u96be\u770b\u51fa\uff0c\u7b2ci\u5929\u6eda\u52a8\u699cS<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span>=<\/span><\/span>\u2211<\/span><\/span><\/span>N<\/span><\/span>\u2212<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span>n<\/span><\/span>=<\/span><\/span>0<\/span><\/span><\/span><\/span><\/span><\/span><\/span>R<\/span><\/span><\/span>i<\/span><\/span>\u2212<\/span><\/span>n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\uff0c\u800c\u7b2ci+1\u5929\u7684\u6eda\u52a8\u699cS<\/span><\/span><\/span>i<\/span><\/span>+<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span>\u2211<\/span><\/span><\/span>N<\/span><\/span>\u2212<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span>n<\/span><\/span>=<\/span><\/span>0<\/span><\/span><\/span><\/span><\/span><\/span><\/span>R<\/span><\/span><\/span>(<\/span><\/span>i<\/span><\/span>+<\/span><\/span>1<\/span><\/span>)<\/span><\/span>\u2212<\/span><\/span>n<\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span>\u2211<\/span><\/span><\/span>N<\/span><\/span>\u2212<\/span><\/span>2<\/span><\/span><\/span><\/span><\/span>n<\/span><\/span>=<\/span><\/span>0<\/span><\/span><\/span><\/span><\/span><\/span><\/span>R<\/span><\/span><\/span>i<\/span><\/span>\u2212<\/span><\/span>n<\/span><\/span><\/span><\/span><\/span><\/span>+<\/span><\/span>R<\/span><\/span><\/span>i<\/span><\/span>+<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3002\u663e\u7136\uff0cS<\/span><\/span><\/span>i<\/span><\/span>+<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span>S<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span>\u2212<\/span><\/span>R<\/span><\/span><\/span>i<\/span><\/span>\u2212<\/span><\/span>(<\/span><\/span>N<\/span><\/span>\u2212<\/span><\/span>1<\/span><\/span>)<\/span><\/span><\/span><\/span><\/span><\/span>+<\/span><\/span>R<\/span><\/span><\/span>i<\/span><\/span>+<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3002\u7531\u4e8eR<\/span><\/span><\/span>i<\/span><\/span>+<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u5728\u521a\u8fbe\u5230\u96f6\u70b9\u65f6\u5fc5\u7136\u4e3a\u7a7a\u4e14\u53ef\u4ee5\u5728\u6b21\u65e5\u5b9e\u65f6\u52a0\u5230S<\/span><\/span><\/span>i<\/span><\/span>+<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u4e0a\uff0c\u56e0\u6b64\u5982\u679c\u6211\u4eec\u80fd\u63d0\u524d\u51c6\u5907\u597dS<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span>\u2212<\/span><\/span>R<\/span><\/span><\/span>i<\/span><\/span>\u2212<\/span><\/span>(<\/span><\/span>N<\/span><\/span>\u2212<\/span><\/span>1<\/span><\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u8fd9\u90e8\u5206\u6570\u636e\uff0c\u90a3\u4e48\u5728\u96f6\u70b9\u8fdb\u5165i+1\u5929\u540e\uff0cR<\/span><\/span><\/span>i<\/span><\/span>+<\/span><\/span>1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u81ea\u7136\u5c31\u662f\u53ef\u7528\u72b6\u6001\u4e86\u3002<\/p>\n

\u4ee53<\/span>\u5929\u6eda\u52a8\u699c\u4e3a\u4f8b\uff0c\u6b21\u65e5\u6eda\u52a8\u699c\u521d\u59cb\u6001\u4e3a\u5f53\u65e5\u6eda\u52a8\u699c\u51cf\u53bbn-2<\/span>\u5929\u7684\u65e5\u699c\u6570\u636e\u3002\r\n     +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>-<\/span>+<\/span>\r\n     |<\/span>                                           |<\/span>\r\n+<\/span>--<\/span>--<\/span>+<\/span>--<\/span>-<\/span>+<\/span>   +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>   +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>             |<\/span>\r\n|<\/span>        |<\/span>   |<\/span>        |<\/span>   |<\/span>        |<\/span>             |<\/span>\r\n|<\/span> R<\/span>(<\/span>i-2<\/span>)<\/span> |<\/span>   |<\/span> R<\/span>(<\/span>i-1<\/span>)<\/span> |<\/span>   |<\/span>  R<\/span>(<\/span>i)<\/span>  |<\/span>             |<\/span>\r\n|<\/span>        |<\/span>   |<\/span>        |<\/span>   |<\/span>        |<\/span>             |<\/span>\r\n+<\/span>--<\/span>--<\/span>+<\/span>--<\/span>-<\/span>+<\/span>   +<\/span>--<\/span>--<\/span>+<\/span>--<\/span>-<\/span>+<\/span>   +<\/span>--<\/span>-<\/span>+<\/span>--<\/span>--<\/span>+<\/span>             |<\/span>\r\n     |<\/span>            |<\/span>           |<\/span>                  |<\/span>\r\n     |<\/span>            |<\/span>           |<\/span>                  |<\/span>\r\n     |<\/span>            |<\/span>           |<\/span>                  |<\/span>\r\n     |<\/span>            |<\/span>           v+<\/span>                 v-<\/span>\r\n     |<\/span>            |<\/span>\r\n     |<\/span>            |<\/span>    +<\/span>  +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>        +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>\r\n     |<\/span>            +<\/span>--<\/span>--<\/span>-<\/span>><\/span> |<\/span>        |<\/span>     +<\/span>  |<\/span>        |<\/span>\r\n     |<\/span>                 +<\/span>  |<\/span>  S<\/span>(<\/span>i)<\/span>  |<\/span> +<\/span>--<\/span>-<\/span>+<\/span>><\/span> |<\/span> S<\/span>(<\/span>i+<\/span>1<\/span>)<\/span> |<\/span>\r\n     +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>-<\/span>+<\/span>><\/span> |<\/span>        |<\/span>        |<\/span>        |<\/span>\r\n                          +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>        +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span><\/pre>\n
\u90a3\u4e48\uff0c\u5982\u4f55\u63d0\u524d\u51c6\u5907\u597dS<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span>\u2212<\/span><\/span>R<\/span><\/span><\/span>i<\/span><\/span>\u2212<\/span><\/span>(<\/span><\/span>N<\/span><\/span>\u2212<\/span><\/span>1<\/span><\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u8fd9\u90e8\u5206\u6570\u636e\u5462\uff1f\u53ef\u4ee5\u5982\u4e0b\u5904\u7406\uff1a<\/p>\n
    \n
  • \u5bf9\u4e00\u4e2a\u5143\u7d20\u52a0\u5206\u65f6\uff0c\u52a0\u5f53\u65e5\u5468\u671f\u699cR<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3001\u6eda\u52a8\u699cS<\/span><\/span><\/span>i<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\uff1b\u8fd8\u9700\u6839\u636e\u5176\u5728\u4eca\u65e5\u6eda\u52a8\u699c\u4e2d\u7684\u5206\u6570s\u3001\u53can-1\u5929\u65e5\u699c\u4e2d\u7684\u5206\u6570r\uff0c\u8ba1\u7b97\u51fa\u5176\u5728\u660e\u65e5\u6eda\u52a8\u699c\u4e2d\u7684\u521d\u59cb\u5206\u6570s-r<\/code>\u5199\u5165\u660e\u65e5\u6eda\u52a8\u699c\u4e2d\uff1b\u53733\u4e2a\u5199\u64cd\u4f5c\uff1b<\/li>\n
  • \u5982\u679c\u4e00\u4e2a\u5143\u7d20\u5728\u5f53\u65e5\u6ca1\u6709\u4efb\u4f55\u52a0\u5206\u64cd\u4f5c\uff0c\u90a3\u4e48\u4e0d\u4f1a\u89e6\u53d1\u5199\u5165\u521d\u59cb\u5206\u6570\u64cd\u4f5c\uff0c\u6240\u4ee5\u8fd8\u9700\u8981\u4e00\u4e2a\u79bb\u7ebf\u5de5\u5177\u8865\u9f50\u3002\u4e0e\u65b9\u68481\u30012\u4e0d\u540c\u7684\u662f\uff0c\u8be5\u79bb\u7ebf\u5de5\u5177\u53ef\u63d0\u524d\u4e00\u5929\u8fd0\u884c\uff0c\u5373\u5f53\u65e5\u8fd0\u884c\u79bb\u7ebf\u5de5\u5177\u8865\u9f50\u6b21\u65e5\u7684\u6eda\u52a8\u699c\u6570\u636e\u5373\u53ef\u3002<\/li>\n<\/ul>\n
    \u7b80\u800c\u8a00\u4e4b\uff1a\u7b2c\u4e00\u6b65\u662f\u8fd0\u884c\u79bb\u7ebf\u5de5\u5177\u751f\u6210\u6b21\u65e5\u7684\u6eda\u52a8\u699c\uff1b\u7b2c\u4e8c\u6b65\u662f\u5728\u5199\u64cd\u4f5c\u65f6\u540c\u65f6\u66f4\u65b0\u6b21\u65e5\u7684\u6eda\u52a8\u699c\u3002<\/p>\n
    \u8be5\u65b9\u6848\u4e5f\u662f\u6bcf\u65e5\u4e00\u4e2a\u6eda\u52a8\u699c\u3002\u76f8\u5bf9\u65b9\u68483\u800c\u8a00\uff0c\u662f\u7a7a\u95f4\u6362\u65f6\u95f4\u3002\u5982\u679c\u7a7a\u95f4\u4e0d\u8db3\u4e14\u65e0\u4fdd\u7559\u5386\u53f2\u7684\u9700\u6c42\uff0c\u53ef\u5728\u79bb\u7ebf\u5de5\u5177\u4e2d\u6e05\u7406\u5386\u53f2\u6570\u636e\u3002<\/p>\n
                                    +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>\r\n                                |<\/span>              |<\/span>\r\n                                |<\/span>   AddScore   |<\/span>\r\n                                |<\/span>              |<\/span>\r\n                                +<\/span>-<\/span>+<\/span>--<\/span>--<\/span>+<\/span>--<\/span>--<\/span>-<\/span>+<\/span>-<\/span>+<\/span>\r\n                                  |<\/span>    |<\/span>     |<\/span>\r\n                                  v    |<\/span>     |<\/span>\r\n+<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>   +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>   +<\/span>--<\/span>--<\/span>--<\/span>-<\/span>++<\/span>   |<\/span>     |<\/span>\r\n|<\/span>        |<\/span>   |<\/span>        |<\/span>   |<\/span>        |<\/span>   |<\/span>     |<\/span>\r\n|<\/span> R<\/span>(<\/span>i-2<\/span>)<\/span> |<\/span>   |<\/span> R<\/span>(<\/span>i-1<\/span>)<\/span> |<\/span>   |<\/span>  R<\/span>(<\/span>i)<\/span>  |<\/span>   |<\/span>     |<\/span>\r\n|<\/span>        |<\/span>   |<\/span>        |<\/span>   |<\/span>        |<\/span>   |<\/span>     |<\/span>\r\n+<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>   +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>   +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>   |<\/span>     |<\/span>\r\n                                       |<\/span>     v\r\n                          +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>   |<\/span>    ++<\/span>--<\/span>--<\/span>--<\/span>-<\/span>+<\/span>\r\n                          |<\/span>        |<\/span>   |<\/span>    |<\/span>        |<\/span>\r\n                          |<\/span>  S<\/span>(<\/span>i)<\/span>  +<\/span><<\/span>--<\/span>+<\/span>    |<\/span> S<\/span>(<\/span>i+<\/span>1<\/span>)<\/span> |<\/span>\r\n                          |<\/span>        |<\/span>        |<\/span>        |<\/span>\r\n                          +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span>        +<\/span>--<\/span>--<\/span>+<\/span>--<\/span>-<\/span>+<\/span>\r\n                                                 ^<\/span>\r\n                                                 |<\/span>\r\n                                                 |<\/span>\r\n                                          +<\/span>--<\/span>--<\/span>--<\/span>+<\/span>--<\/span>--<\/span>-<\/span>+<\/span>\r\n                                          |<\/span>            |<\/span>\r\n                                          |<\/span>    Tool    |<\/span>\r\n                                          |<\/span>            |<\/span>\r\n                                          +<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>--<\/span>+<\/span><\/pre>\n
    \u65b9\u68484\u7684\u5b9e\u73b0<\/h3>\n
    \u4ee5\u4e0b\u662f\u5b9e\u73b0\u53c2\u8003\u3002\u6b64\u5904\u4ec5\u5217\u51fa\u6838\u5fc3\u7684lua\u811a\u672c\u3002Redis\u547d\u4ee4\u8c03\u7528\u811a\u672c\u7684\u53c2\u6570\u5b9a\u4e49\u4e3a\uff1a<\/p>\n
    eval script 4<\/span> \u5f53\u65e5\u65e5\u699ckey \u5f53\u65e5\u6eda\u52a8\u699ckey \u5373\u5c06\u6dd8\u6c70\u7684\u65e5\u699ckey \u660e\u65e5\u6eda\u52a8\u699ckey \u699c\u5355\u5143\u7d20\u540d \u52a0\u5206\u6570<\/pre>\n
    lua\u811a\u672cscript\u5982\u4e0b\uff1a<\/p>\n
    --<\/span>\u52a0\u4eca\u65e5\u65e5\u699c\u5206\u6570\r\nredis.<\/span>call<\/span>(<\/span>'ZINCRBY'<\/span>,<\/span> KEYS[<\/span>1<\/span>]<\/span>,<\/span> ARGV[<\/span>2<\/span>]<\/span>,<\/span> ARGV[<\/span>1<\/span>]<\/span>)<\/span>\r\n\r\n--<\/span>\u52a0\u4eca\u65e5\u6eda\u52a8\u699c\u5206\u6570\r\nlocal rs =<\/span> redis.<\/span>call<\/span>(<\/span>'ZINCRBY'<\/span>,<\/span> KEYS[<\/span>2<\/span>]<\/span>,<\/span> ARGV[<\/span>2<\/span>]<\/span>,<\/span> ARGV[<\/span>1<\/span>]<\/span>)<\/span>\r\nlocal curRoundScore =<\/span> 0<\/span>\r\nif<\/span> (<\/span>rs)<\/span> then\r\n    curRoundScore =<\/span> tonumber<\/span>(<\/span>rs)<\/span>\r\nend\r\n\r\n--<\/span>\u53d6\u5373\u5c06\u6dd8\u6c70\u7684\u65e5\u699c\u5206\u6570\r\nrs =<\/span> redis.<\/span>call<\/span>(<\/span>'ZSCORE'<\/span>,<\/span> KEYS[<\/span>3<\/span>]<\/span>,<\/span> ARGV[<\/span>1<\/span>]<\/span>)<\/span>\r\nlocal oldCycleScore =<\/span> 0<\/span>\r\nif<\/span> (<\/span>rs)<\/span> then\r\n    oldCycleScore =<\/span> tonumber<\/span>(<\/span>rs)<\/span>\r\nend\r\n\r\n--<\/span>\u8ba1\u7b97\u6b21\u65e5\u6eda\u52a8\u699c\u521d\u59cb\u5206\u6570\r\nlocal nextRoundScore =<\/span> curRoundScore -<\/span> oldCycleScore\r\nif<\/span> nextRoundScore <<\/span> 0<\/span> then\r\n    nextRoundScore =<\/span> 0<\/span>\r\nend\r\n\r\n--<\/span>\u8bbe\u7f6e\u6b21\u65e5\u6eda\u52a8\u699c\u5206\u6570\r\nredis.<\/span>call<\/span>(<\/span>'ZADD'<\/span>,<\/span> KEYS[<\/span>4<\/span>]<\/span>,<\/span> nextRoundScore,<\/span> ARGV[<\/span>1<\/span>]<\/span>)<\/span>\r\n\r\n--<\/span>\u8fd4\u56de\u4eca\u65e5\u5206\u6570\r\nrs =<\/span> redis.<\/span>call<\/span>(<\/span>'ZREVRANK'<\/span>,<\/span> KEYS[<\/span>2<\/span>]<\/span>,<\/span> ARGV[<\/span>1<\/span>]<\/span>)<\/span>\r\nreturn<\/span> {<\/span>curRoundScore,<\/span> rs}<\/span><\/pre>\n
    \u5173\u4e8e\u699c\u5355key\u8ba1\u7b97\u51c6\u786e\u5ea6\u7684\u63a2\u8ba8<\/strong> \u6211\u4eec\u7684\u4e1a\u52a1\u662f\u5728\u6392\u884c\u699c\u63a5\u5165\u5c42\u903b\u8f91\u4e2d\u8ba1\u7b97\u699c\u5355\u540e\u7f00\u7684\uff0c\u8fd9\u79cd\u65b9\u6848\u5bf9\u903b\u8f91\u5c42\u591a\u53f0\u673a\u5668\u7684\u65f6\u95f4\u4e00\u81f4\u6027\u8981\u6c42\u8f83\u9ad8\uff0c\u5982\u679c\u903b\u8f91\u5c42\u670d\u52a1\u5668\u65f6\u949f\u4e0d\u4e00\u81f4\uff0c\u53ef\u80fd\u5728\u65f6\u95f4\u5207\u6362\u70b9\u4e0a\u51fa\u73b0\u4e0d\u540c\u673a\u5668\u8bfb\u5199\u4e0d\u540c\u699c\u5355\u7684\u95ee\u9898\u3002\u5982\u679c\u4e1a\u52a1\u5bf9\u65f6\u95f4\u7cbe\u786e\u5ea6\u8981\u6c42\u4e25\u683c\uff0c\u53ef\u4ee5\u8003\u8651\u901a\u8fc7lua\u811a\u6b65\u5728redis\u7aef\u8ba1\u7b97\u540e\u7f00\u3002<\/p><\/blockquote>\n
    .<\/p>\n
    \u5173\u4e8e\u5185\u5b58\u5bb9\u91cf\u9650\u5236\u7684\u63a2\u8ba8<\/strong> \u57fa\u4e8eZSet\u5b9e\u73b0\u7684\u6392\u884c\u699c\uff0c\u6bcf\u4e2a\u5143\u7d20\u7ea6\u9700\u8981100\u5b57\u8282\u5185\u5b58\u3002\u5982\u679c\u699c\u5355\u957f\u5ea6\u4e3a1000\u4e07\uff0c\u5219\u6bcf\u4e2a\u699c\u5355\u7ea6\u9700\u89811G\u5185\u5b58\u3002\u6eda\u52a8\u699c\u7684\u8ba1\u7b97\u9700\u8981\u6bcf\u65e5\u4fdd\u7559\u4e00\u4e2a\u65e5\u699c\uff0c\u5982\u679c\u6eda\u52a8\u5468\u671f\u8f83\u957f\uff0c\u5219\u53ef\u80fd\u5355\u673a\u5185\u5b58\u5bb9\u91cf\u4e0d\u8db3\u4ee5\u5bb9\u7eb3\u6240\u6709\u9700\u8981\u7684\u699c\u5355\u3002 \u8003\u8651\u5230\u5386\u53f2\u65e5\u699c\u6570\u636e\u662f\u4e0d\u4f1a\u53d8\u66f4\u7684\uff0c\u56e0\u6b64\u4e0d\u5728lua\u811a\u672c\u4e2d\u8bfb\u53d6\u5386\u53f2\u65e5\u699c\u6570\u636e\u4e5f\u65e0\u4e00\u81f4\u6027\u95ee\u9898\u3002\u6545\u53ef\u4ee5\u5c06\u699c\u5355\u6253\u6563\u5230\u591a\u4e2aRedis\u5b9e\u4f8b\uff0c\u5728\u63a5\u5165\u5c42\u505a\u903b\u8f91\u8bfb\u53d6\u5386\u53f2\u65e5\u699c\u7684\u5206\u6570\uff0c\u518d\u4ee5\u53c2\u6570\u5f62\u5f0f\u4f20\u5165\u7ed9lua\u811a\u672c\u5904\u7406\u3002<\/p><\/blockquote>\n
    \u603b\u7ed3<\/h1>\n
    \u5728\u699c\u5355\u957f\u5ea6\u4e0d\u5927\u4e14\u5e76\u53d1\u91cf\u4e0d\u9ad8\u7684\u573a\u666f\u4e0b\uff0c\u4f7f\u7528\u5173\u7cfb\u6570\u636e\u5e93+Cache\u7684\u65b9\u6848\u5b9e\u73b0\u6392\u884c\u699c\u6709\u66f4\u9ad8\u7684\u7075\u6d3b\u6027\u3002\u800c\u5728\u6d77\u91cf\u6570\u636e\u4e0e\u9ad8\u5e76\u53d1\u7684\u573a\u666f\u4e0b\uff0cRedis\u662f\u4e00\u4e2a\u66f4\u597d\u7684\u9009\u62e9\u3002\u672c\u6587\u57fa\u4e8eRedis\u5b9e\u73b0\u7684\u6eda\u52a8\u699c\uff0c\u4e0d\u8bba\u6eda\u52a8\u5468\u671f\u591a\u957f\uff0c\u90fd\u53ea\u9700\u8981\u5e38\u6570\uff083\uff09\u6b21\u6570\u7684\u5199\u64cd\u4f5c\uff0c\u6709\u8f83\u597d\u7684\u6027\u80fd\u548c\u53ef\u6269\u5c55\u6027\u3002\u4e14\u901a\u8fc7\u79bb\u7ebf+\u5728\u7ebf\u7684\u53cc\u9884\u751f\u6210\u673a\u5236\uff0c\u786e\u4fdd\u4e86\u699c\u5355\u5b9e\u65f6\u751f\u6548\uff0c\u53ef\u7528\u6027\u8f83\u5f3a\u3002<\/p>\n<\/div>\n
    \n
    \u539f\u521b\u58f0\u660e\uff0c\u672c\u6587\u7cfb\u4f5c\u8005\u6388\u6743\u4e91+\u793e\u533a\u53d1\u8868\uff0c\u672a\u7ecf\u8bb8\u53ef\uff0c\u4e0d\u5f97\u8f6c\u8f7d\u3002<\/p>\n
    \u5982\u6709\u4fb5\u6743\uff0c\u8bf7\u8054\u7cfb\u00a0yunjia_community@tencent.com\u00a0\u5220\u9664\u3002<\/p>\n<\/div>\n
    \u53d1\u8868\u4e8e\u00a0