{"id":4544,"date":"2024-04-20T20:38:50","date_gmt":"2024-04-20T12:38:50","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/index.php\/%e9%9d%a2%e8%af%95\/%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9aredis%e6%9c%89%e5%93%aa%e4%ba%9b%e6%8c%81%e4%b9%85%e5%8c%96%e6%9c%ba%e5%88%b6%ef%bc%88%e5%a6%82%e4%bd%95%e4%bf%9d%e9%9a%9c%e6%95%b0%e6%8d%ae%e4%b8%8d%e4%b8%a2\/"},"modified":"2024-04-20T20:38:50","modified_gmt":"2024-04-20T12:38:50","slug":"%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9aredis%e6%9c%89%e5%93%aa%e4%ba%9b%e6%8c%81%e4%b9%85%e5%8c%96%e6%9c%ba%e5%88%b6%ef%bc%88%e5%a6%82%e4%bd%95%e4%bf%9d%e9%9a%9c%e6%95%b0%e6%8d%ae%e4%b8%8d%e4%b8%a2","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/%e9%9d%a2%e8%af%95\/%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9aredis%e6%9c%89%e5%93%aa%e4%ba%9b%e6%8c%81%e4%b9%85%e5%8c%96%e6%9c%ba%e5%88%b6%ef%bc%88%e5%a6%82%e4%bd%95%e4%bf%9d%e9%9a%9c%e6%95%b0%e6%8d%ae%e4%b8%8d%e4%b8%a2\/","title":{"rendered":"\u9762\u8bd5\u5b98\uff1aRedis\u6709\u54ea\u4e9b\u6301\u4e45\u5316\u673a\u5236\uff08\u5982\u4f55\u4fdd\u969c\u6570\u636e\u4e0d\u4e22\u5931\uff09\uff1f\u8fd9\u4e2aRedis\u5fc5\u7b54\u9898\u4f60\u4e00\u5b9a\u4e0d\u8981\u9519\u8fc7\uff01"},"content":{"rendered":"
\n

<\/span>Redis\u4f5c\u4e3a\u4e00\u6b3e\u9ad8\u6027\u80fd\u7684\u952e\u503c\u5bf9\u6570\u636e\u5e93\uff0c\u5176\u6570\u636e\u4e3b\u8981\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\u4ee5\u5b9e\u73b0\u6781\u9ad8\u7684\u8bbf\u95ee\u6548\u7387\u3002\u7136\u800c\uff0c\u5185\u5b58\u5b58\u50a8\u610f\u5473\u7740\u5728\u670d\u52a1\u5668\u91cd\u542f\u3001\u6545\u969c\u6216\u5176\u4ed6\u610f\u5916\u60c5\u51b5\u53d1\u751f\u65f6\uff0c\u5982\u679c\u6ca1\u6709\u9002\u5f53\u7684\u4fdd\u62a4\u63aa\u65bd\uff0c\u6570\u636e\u53ef\u80fd\u4f1a\u4e22\u5931\u3002\u56e0\u6b64\uff0c<\/span>Redis\u8bbe\u8ba1\u5e76\u63d0\u4f9b\u4e86\u4e24\u79cd\u6838\u5fc3\u7684\u6301\u4e45\u5316\u673a\u5236\u6765\u786e\u4fdd\u6570\u636e\u7684\u957f<\/span>\u671f\u5b89\u5168\u6027\u548c\u53ef\u9760\u6027\uff0c\u5373RDB\uff08Redis Database\uff09\u6301\u4e45\u5316\u548cAOF\uff08Append-Only File\uff09\u6301\u4e45\u5316\u3002<\/span>\u6b64\u5916\uff0c\u8fd8\u6709\u4e00\u79cd\u7ed3\u5408\u4e24\u8005\u4f18\u70b9\u7684\u6df7\u5408\u4f7f\u7528\uff08RDB + AOF\uff09\u7b56\u7565\u3002<\/span><\/span><\/p>\n

\n

1\u3001RDB\u6301\u4e45\u5316<\/span><\/p>\n

<\/span><\/p>\n

RDB\u6301\u4e45\u5316\u662f\u4e00\u79cd\u57fa\u4e8e\u5feb\u7167\u7684\u673a\u5236\uff0c\u5b83\u5c06\u67d0\u4e2a\u65f6\u523b\u7684Redis\u6570\u636e\u96c6\u4ee5\u4e8c\u8fdb\u5236\u7684\u5f62\u5f0f\u5e8f\u5217\u5316\u5230\u78c1\u76d8\u4e0a\u7684\u4e00\u4e2a\u6587\u4ef6\uff08\u901a\u5e38\u540d\u4e3a<\/span>dump.rdb<\/span><\/code>\uff09\u3002Redis\u91c7\u7528\u7684\u662f\u5168\u91cf\u5feb\u7167\u3002<\/span><\/p>\n

<\/span><\/p>\n

\u4f18\u70b9\uff1a<\/strong><\/span><\/p>\n

\uff081\uff09\u6570\u636e\u7d27\u51d1\uff1aRDB\u6587\u4ef6\u901a\u8fc7\u538b\u7f29\u7b97\u6cd5\u8fdb\u884c\u5b58\u50a8\uff0c\u5177\u6709\u8f83\u5c0f\u7684\u4f53\u79ef\uff0c\u4fbf\u4e8e\u4f20\u8f93\u548c\u5907\u4efd\u3002<\/span><\/p>\n

\uff082\uff09\u6062\u590d\u901f\u5ea6\u5feb\uff1a\u7531\u4e8eRDB\u6587\u4ef6\u4ec5\u5305\u542b\u6570\u636e\u96c6\u7684\u5b8c\u6574\u5feb\u7167\uff0c\u6240\u4ee5\u5728 Redis \u91cd\u542f\u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u8bfb\u53d6\u8be5\u6587\u4ef6\u8fdb\u884c\u5feb\u901f\u6570\u636e\u52a0\u8f7d\uff0c\u6062\u590d\u8fc7\u7a0b\u9ad8\u6548\u3002<\/span><\/p>\n

\uff083\uff09\u8d44\u6e90\u53cb\u597d\uff1a\u521b\u5efaRDB\u6587\u4ef6\u7684\u8fc7\u7a0b\u901a\u5e38\u662f\u5f02\u6b65\u4e14fork-based\u7684\uff0c\u5bf9\u4e3b\u7ebf\u7a0b\u5f71\u54cd\u8f83\u5c0f\uff0c\u4e0d\u4f1a\u663e\u8457\u963b\u585e Redis \u7684\u670d\u52a1\u54cd\u5e94\u3002bgsave\u547d\u4ee4\u751f\u6210RDB\u5feb\u7167\uff0c\u4f1a\u521b\u5efa\u4e00\u4e2a\u5b50\u8fdb\u7a0b\uff0c\u4e13\u95e8\u7528\u4e8e\u5199\u5165RDB\u6587\u4ef6\uff0c\u907f\u514d\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002\u800csave\u547d\u4ee4\u662f\u5728\u4e3b\u7ebf\u7a0b\u6267\u884c\u7684\u3002<\/span><\/p>\n

<\/span><\/p>\n

\u867d\u7136bgsave\u4e0d\u963b\u585e\u4e3b\u7ebf\u7a0b\uff0c\u4f46\u662f\u8fd8\u662f\u6709\u5f71\u54cd\u7684\uff0cbgsave\u5b50\u8fdb\u7a0b\u5171\u4eab\u4e3b\u7ebf\u7a0b\u7684\u6240\u6709\u5185\u5b58\u6570\u636e\uff0c\u6b64\u65f6\u4e3b\u7ebf\u7a0b\u5bf9\u6570\u636e\u8fdb\u884c\u8bfb\u64cd\u4f5c\u65f6\uff0c\u4e24\u8005\u4e92\u4e0d\u5f71\u54cd\uff1b\u4f46\u662f\u5982\u679c\u662f\u5199\u64cd\u4f5c\uff0c\u5c31\u4f1a\u5f71\u54cd\u4e86\uff0cRedis \u4f1a\u501f\u52a9\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u5199\u65f6\u590d\u5236\u6280\u672f\uff08Copy-On-Write, COW\uff09\uff0c\u5728\u6267\u884c\u5feb\u7167\u7684\u540c\u65f6\uff0c\u6b63\u5e38\u5904\u7406\u5199\u64cd\u4f5c\u3002\u5982\u4e0b\u56fe\u6240\u793a[1]<\/span>\uff1a<\/span><\/p>\n

\u7f3a\u70b9\uff1a<\/strong><\/span><\/p>\n

\uff081\uff09\u53ef\u80fd\u7684\u6570\u636e\u4e22\u5931\uff1a<\/span>RDB\u6301\u4e45\u5316\u662f\u5468\u671f\u6027\u8fdb\u884c\u7684\uff0c\u53d6\u51b3\u4e8e\u914d\u7f6e\u7684\u4fdd\u5b58\u7b56\u7565\uff08\u5982<\/span>save<\/span><\/code>\u6216<\/span>bgsave<\/span><\/code>\u547d\u4ee4\u89e6\u53d1\uff09\uff0c\u5728\u4e24\u6b21\u5feb\u7167\u4e4b\u95f4\u53d1\u751f\u7684\u6570\u636e\u53d8\u66f4\u5982\u679c\u672a\u88ab\u540c\u6b65\u5230\u78c1\u76d8\uff0c\u53ef\u80fd\u5728\u6545\u969c\u65f6\u4e22\u5931\u3002<\/span><\/p>\n

\uff082\uff09\u8d44\u6e90\u6d88\u8017\uff1a<\/span>\u867d\u7136\u521b\u5efaRDB\u65f6\u5bf9\u4e3b\u7ebf\u7a0b\u5f71\u54cd\u8f83\u5c0f\uff0c\u4f46fork\u5b50\u8fdb\u7a0b\u548c\u538b\u7f29\u64cd\u4f5c\u4ecd\u9700\u6d88\u8017\u4e00\u5b9a\u7684CPU\u548c\u5185\u5b58\u8d44\u6e90\u3002<\/span><\/p>\n

\n

\u89e6\u53d1\u65f6\u673a\uff1a<\/strong><\/span><\/p>\n

RDB\u6301\u4e45\u5316\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u89e6\u53d1\uff1a<\/span><\/p>\n

\uff081\uff09\u6267\u884c<\/span>bgsave<\/span><\/code>\u547d\u4ee4\u624b\u52a8\u89e6\u53d1\u3002<\/span><\/p>\n

\uff082\uff09\u914d\u7f6e\u6587\u4ef6\u4e2d\u9884\u8bbe\u7684<\/span>save<\/span><\/code>\u89c4\u5219\u6ee1\u8db3\u65f6\uff08\u5982\u4e00\u5b9a\u65f6\u95f4\u5185\u6570\u636e\u53d1\u751f\u7279\u5b9a\u6570\u91cf\u7684\u66f4\u6539\uff09\u3002<\/span><\/p>\n

\uff083\uff09\u5728\u4e3b\u4ece\u590d\u5236\u573a\u666f\u4e0b\uff0c\u5f53\u4ece\u8282\u70b9\u9996\u6b21\u8fde\u63a5\u4e3b\u8282\u70b9\u65f6\uff0c\u4e3b\u8282\u70b9\u4f1a\u53d1\u9001\u6700\u65b0\u7684RDB\u6587\u4ef6\u7ed9\u4ece\u8282\u70b9\u3002<\/span><\/p>\n

<\/span><\/p>\n

2\u3001AOF\u6301\u4e45\u5316<\/span><\/p>\n

<\/span><\/p>\n

AOF\u6301\u4e45\u5316\u91c7\u53d6\u65e5\u5fd7\u8bb0\u5f55\u7684\u65b9\u5f0f\uff0c\u5c06Redis\u670d\u52a1\u5668\u6267\u884c\u7684\u6240\u6709\u5199\u547d\u4ee4\uff08\u5305\u62ec\u6570\u636e\u6dfb\u52a0\u3001\u4fee\u6539\u3001\u5220\u9664\u7b49\u64cd\u4f5c\uff09\u4ee5\u6587\u672c\u683c\u5f0f\u8ffd\u52a0\u5230\u4e00\u4e2a\u540d\u4e3a<\/span>appendonly.aof<\/span><\/code>\u7684\u6587\u4ef6\u4e2d\u3002\u8fd9\u79cd\u65b9\u5f0f\u63d0\u4f9b\u4e86\u66f4\u4e3a\u8be6\u7ec6\u7684\u66f4\u65b0\u5386\u53f2\u8bb0\u5f55\uff0c\u786e\u4fdd\u4e86\u66f4\u9ad8\u7684\u6570\u636e\u4e00\u81f4\u6027\u3002AOF\u65e5\u5fd7\u662f\u5199\u5185\u5b58\u547d\u4ee4\u6267\u884c\u540e\u624d\u5199\u5165\u78c1\u76d8\u7684<\/span>\uff0c\u5982\u4e0b\u56fe\uff1a<\/span><\/p>\n

\n

\u4f18\u70b9\uff1a<\/span><\/strong><\/p>\n

\uff081\uff09\u6570\u636e\u5b89\u5168\u6027\u9ad8\uff1aAOF\u8bb0\u5f55\u4e86\u6240\u6709\u5199\u64cd\u4f5c\uff0c\u5373\u4f7f\u5728\u6545\u969c\u65f6\u53ea\u90e8\u5206\u5199\u5165\u4e86\u78c1\u76d8\uff0c\u4e5f\u80fd\u901a\u8fc7\u91cd\u653e\u672a\u5b8c\u6210\u7684\u547d\u4ee4\u5c3d\u53ef\u80fd\u6062\u590d\u5230\u6700\u65b0\u72b6\u6001\uff0c\u6570\u636e\u4e22\u5931\u7684\u53ef\u80fd\u6027\u76f8\u5bf9\u8f83\u5c0f\u3002<\/span><\/p>\n

\uff082\uff09\u53ef\u8c03\u6574\u7684\u6301\u4e45\u5316\u7ea7\u522b\uff1aAOF\u652f\u6301\u591a\u79cd\u5199\u56de\u7b56\u7565\uff08\u5982<\/span><\/span>always<\/span><\/code>\u3001<\/span>everysec<\/span><\/code>\u3001<\/span>no-\u6bcf\u79d2fsync\u4e00\u6b21\uff08always\u7b56\u7565\uff09\uff0c\u4e5f\u53ef\u4ee5\u914d\u7f6e\u4e3a\u6bcf\u6b21\u5199\u547d\u4ee4\u7acb\u5373\u540c\u6b65\uff08everysec\uff09\u6216\u7531\u64cd\u4f5c\u7cfb\u7edf\u51b3\u5b9a\u4f55\u65f6\u540c\u6b65\uff08no\uff09<\/span><\/code>\uff09<\/span>\uff0c\u5141\u8bb8\u7528\u6237\u6839\u636e\u5b9e\u9645\u9700\u6c42\u5728\u6570\u636e\u5b89\u5168\u6027\u4e0e\u6027\u80fd\u4e4b\u95f4\u505a\u51fa\u6743\u8861\u3002<\/span><\/p>\n

<\/span><\/p>\n

\u7f3a\u70b9\u4e0e\u6311\u6218\uff1a<\/span><\/strong><\/p>\n

\uff081\uff09\u6587\u4ef6\u4f53\u79ef\u589e\u957f\u8f83\u5feb\uff1a<\/span>\u968f\u7740\u64cd\u4f5c\u7684\u79ef\u7d2f\uff0cAOF\u6587\u4ef6\u5927\u5c0f\u53ef\u80fd\u4f1a\u6bd4RDB\u6587\u4ef6\u66f4\u5927\uff0c\u5c24\u5176\u662f\u5728\u4f7f\u7528\u4f4e\u7ea7\u522b\u7684\u6301\u4e45\u5316\u7b56\u7565\u65f6\u3002<\/span><\/p>\n

\u4e0d\u8fc7Redis\u6709AOF\u91cd\u5199\u673a\u5236<\/span>\uff0c\u4f1a\u5408\u5e76\u5199\u5165\u547d\u540d\uff0c\u6bd4\u5982\u4e24\u6b21set A\u7684\u547d\u4ee4\u4f1a\u5408\u5e76\u4e3a1\u6761\uff0c\u4ece\u800c\u51cf\u5c11\u65e5\u5fd7\u6587\u4ef6\u5927\u5c0f\u3002\u6bcf\u6b21 AOF \u91cd\u5199\u65f6\uff0cRedis \u4f1a\u5148\u6267\u884c\u4e00\u4e2a\u5185\u5b58\u62f7\u8d1d\uff0c\u7528\u4e8e\u91cd\u5199\uff1b\u7136\u540e\uff0c\u4f7f\u7528\u4e24\u4e2a\u65e5\u5fd7\u4fdd\u8bc1\u5728\u91cd\u5199\u8fc7\u7a0b\u4e2d\uff0c\u65b0\u5199\u5165\u7684\u6570\u636e\u4e0d\u4f1a\u4e22\u5931\u3002\u800c\u4e14\uff0c\u56e0\u4e3a Redis \u91c7\u7528\u989d\u5916\u7684\u7ebf\u7a0b\u8fdb\u884c\u6570\u636e\u91cd\u5199\uff0c\u6240\u4ee5\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u5e76\u4e0d\u4f1a\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002\u5982\u4e0b\u56fe[1]<\/span>\uff1a<\/span><\/p>\n

\n

\uff082\uff09\u6062\u590d\u901f\u5ea6\u8f83\u6162\uff1a\u5728Redis\u91cd\u542f\u65f6\uff0c\u9700\u8981\u91cd\u65b0\u6267\u884cAOF\u6587\u4ef6\u4e2d\u7684\u6240\u6709\u5199\u547d\u4ee4\u624d\u80fd\u6062\u590d\u6570\u636e\u96c6\uff0c\u76f8\u8f83\u4e8e\u76f4\u63a5\u52a0\u8f7dRDB\u6587\u4ef6\uff0c\u53ef\u80fd\u8017\u65f6\u66f4\u957f\u3002<\/span><\/p>\n

\uff083\uff09\u6f5c\u5728\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u98ce\u9669\uff1a\u5728\u6781\u5c11\u6570\u60c5\u51b5\u4e0b\uff0c\u5982AOF\u6587\u4ef6\u635f\u574f\u6216\u547d\u4ee4\u89e3\u6790\u51fa\u9519\uff0c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u6062\u590d\u4e0d\u5b8c\u5168\u6216\u51fa\u73b0\u9519\u8bef\u3002<\/span><\/p>\n

<\/span><\/p>\n

\u89e6\u53d1\u65f6\u673a\uff1a<\/span><\/strong><\/p>\n

AOF\u6301\u4e45\u5316\u9ed8\u8ba4\u4e3a<\/span>everysec<\/span><\/code>\u7b56\u7565\uff0c\u6839\u636e<\/span>always<\/span><\/code>\u3001<\/span>everysec<\/span><\/code>\u3001<\/span>no\u7b56\u7565\u9009\u62e9\u5199\u5165\u65f6\u673a\u4e0d\u540c<\/span><\/code>\u3002\u6b64\u5916\uff0c\u6267\u884c<\/span>BGREWRITEAOF<\/span><\/code>\u547d\u4ee4\u53ef\u4ee5\u89e6\u53d1AOF\u91cd\u5199\uff0c\u4f18\u5316\u6587\u4ef6\u5927\u5c0f\u5e76\u5408\u5e76\u91cd\u590d\u547d\u4ee4\u3002<\/span><\/p>\n

\u5982\u679c\u540c\u65f6\u5206\u522b\u5f00\u542fRDB\u548cAOF\u65f6\uff0c\u4f1a\u4f18\u5148\u4f7f\u7528AOF\u6587\u4ef6\u8fdb\u884c\u6062\u590d\uff0c\u56e0\u4e3a\u76f8\u6bd4RDB\uff0cAOF\u6587\u4ef6\u4fdd\u5b58\u7684\u547d\u4ee4\u64cd\u4f5c\u901a\u5e38\u66f4\u5168\u4e9b\u3002<\/span><\/p>\n

<\/span><\/p>\n

3\u3001\u6df7\u5408\u6301\u4e45\u5316\uff08RDB+AOF\uff09<\/span><\/p>\n

<\/span><\/p>\n

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Redis\u63d0\u4f9b\u4e86RDB\u3001AOF\u4ee5\u53ca\u6df7\u5408\u6301\u4e45\u5316\u4e09\u79cd\u6301\u4e45\u5316\u673a\u5236\uff0c\u4ee5\u9002\u5e94\u4e0d\u540c\u5e94\u7528\u573a\u666f\u5bf9\u6570\u636e\u5b89\u5168\u3001\u6027\u80fd\u548c\u5b58\u50a8\u7a7a\u95f4\u7684\u9700\u6c42\u3002\u9762\u8bd5\u8005\u5728\u7406\u89e3\u548c\u638c\u63e1\u8fd9\u4e9b\u673a\u5236\u7684\u57fa\u7840\u4e0a\uff0c\u5e94\u80fd\u6839\u636e\u5b9e\u9645\u4e1a\u52a1\u573a\u666f\u5206\u6790\u4f18\u52a3\uff0c\u5e76\u5408\u7406\u9009\u62e9\u548c\u914d\u7f6e\u6301\u4e45\u5316\u7b56\u7565\u3002<\/span><\/p>\n

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\u53c2\u8003\uff1a<\/span><\/p>\n

[1]<\/span>https:\/\/time.geekbang.org\/column\/article\/271839<\/span><\/p>\n

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\n<\/article>\n

\u70b9\u51fb\u5173\u6ce8\u6211\uff0c\u4ea4\u4e2a\u670b\u53cb\u5427\uff01<\/span><\/section>\n
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