{"id":4034,"date":"2019-03-24T20:28:31","date_gmt":"2019-03-24T12:28:31","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=4034"},"modified":"2019-07-17T15:38:43","modified_gmt":"2019-07-17T07:38:43","slug":"%e9%83%bd9102%e4%ba%86%ef%bc%8c%e4%bd%a0%e8%bf%98%e4%b8%8d%e6%87%82redis%e7%9a%84%e6%8c%81%e4%b9%85%e5%8c%96%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=4034","title":{"rendered":"\u90fd9102\u4e86\uff0c\u4f60\u8fd8\u4e0d\u61c2Redis\u7684\u6301\u4e45\u5316\uff1f"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u90fd 9102 \u5e74\u4e86\uff0c\u4f60\u8fd8\u5728\u9762\u8bd5\u4e2d\u901a\u4fd7\u7b80\u5355\u7684\u56de\u7b54\uff0cRedis \u7684\u6301\u4e45\u5316\u662f RDB \u548c AOF\uff01\u6211\u968f\u4fbf\u6269\u5c55\u4e00\u70b9\uff0c\u4f60\u5c31\u9732\u9985\u4e86\uff01<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcgy1g1e5fs3rzrj20dm08wagg.jpg\" alt=\"\" \/><figcaption>\u4f60\u5ffd\u7565\u7684\u624d\u53eb\u77e5\u8bc6<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bd4\u5982\uff0cRedis \u7684\u9ed8\u8ba4\u6301\u4e45\u5316\u65b9\u5f0f\u662f\u54ea\u4e00\u79cd\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u55ef\uff0c\u5bf9\u4e0d\u8d77\uff0c\u6211\u4e0d\u6e05\u695a\u3002\u8001\u5e08\u53ea\u662f\u8bf4 Redis \u7684\u6301\u4e45\u5316\u662f RDB \u548c AOF\uff0c\u5177\u4f53\u9ed8\u8ba4\u662f\u8c01\uff1f\u6211\u5fd8\u4e86\uff01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6301\u4e45\u5316\u540e\uff0c\u662f\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6587\u4ef6\u7684\u662f\u54ea\u4e00\u79cd\u65b9\u5f0f\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u55ef\uff0c\u6211\u5bf9\u8fd9\u4e2a\u4e0d\u662f\u5f88\u4e86\u89e3\u3002\u6211\u76ee\u524d\u8fd8\u53ea\u662f\u5728\u4f1a\u7528\u7684\u9636\u6bb5\uff0c\u540e\u9762\u6211\u4f1a\u52a0\u5f3a\u5b66\u4e60\u53bb\u4e86\u89e3\uff01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c7b\u4f3c\u7684\u95ee\u9898\u6211\u5c31\u4e0d\u5728\u5217\u4e3e\u4e86\u3002\u591a\u6570\u4eba\u90fd\u662f\u5728\u4f7f\u7528\uff0c\u800c\u6ca1\u6709\u8ba4\u771f\u7684\u60f3\u8fc7\uff0c\u4e3a\u4ec0\u4e48\u662f\u8fd9\u6837\uff1f\u5e95\u5c42\u662f\u5982\u4f55\u5b9e\u73b0\u7684\uff01<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcgy1g1e5hvfnh3j20fh09vdpz.jpg\" alt=\"\" \/><figcaption>\u5c34\u5c2c\u7684\u9762\u8bd5<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u5929\uff0c\u65f6\u95f4\u5173\u7cfb\uff0c\u6211\u5c31\u7b80\u5355\u7684\u8bf4\u4e00\u4e0b RDB \u548c AOF \u6301\u4e45\u5316\u5e38\u89c1\u7684\u9762\u8bd5\u9898\u548c\u5e94\u8be5\u6ce8\u610f\u7684\u77e5\u8bc6\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u751f\u6210 RDB \u6587\u4ef6\u6709\u4e24\u4e2a\u547d\u4ee4\u3002\u4e00\u4e2a\u662f SAVE\u3001\u53e6\u4e00\u4e2a\u662f BGSAVE\u3002\u4e24\u8005\u7684\u533a\u522b\u5728\u4e8e\uff1aSAVE \u547d\u4ee4\u4f1a\u963b\u585e Redis \u670d\u52a1\u5668\u8fdb\u7a0b\uff0c\u76f4\u5230 RDB \u6587\u4ef6\u521b\u5efa\u5b8c\u6bd5\u4e3a\u6b62\u3002\u5728\u670d\u52a1\u5668\u8fdb\u7a0b\u963b\u585e\u671f\u95f4\uff0c\u670d\u52a1\u5668\u662f\u4e0d\u80fd\u5904\u7406\u4efb\u4f55\u547d\u4ee4\u8bf7\u6c42\u7684\uff1b\u800c BGSAVE \u547d\u4ee4\u4e0d\u4f1a\u963b\u585e\u670d\u52a1\u5668\u8fdb\u7a0b\uff0c\u56e0\u4e3a\u662f\u901a\u8fc7 fork \u4e00\u4e2a\u5b50\u8fdb\u7a0b\uff0c\u5e76\u8ba9\u5176\u53bb\u521b\u5efa RDB \u6587\u4ef6\uff0c\u800c\u670d\u52a1\u5668\u8fdb\u7a0b\uff08\u7236\u8fdb\u7a0b\uff09\u7ee7\u7eed\u5219\u7ee7\u7eed\u5904\u7406\u547d\u4ee4\u8bf7\u6c42\uff0c\u5f53\u5199\u5b8c\u6570\u636e\u5e93\u72b6\u6001\u540e\uff0c\u65b0 RDB \u6587\u4ef6\u5c31\u4f1a\u539f\u5b50\u5730\u66ff\u6362\u65e7\u7684 RDB \u6587\u4ef6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u62d3\u5c55\u9762\u8bd5\u9898\uff1a\u5982\u679c\u5728\u6267\u884c BGSAVE \u671f\u95f4\uff0c\u5ba2\u6237\u7aef\u53d1\u9001 SAVE\u3001BGSAVE \u6216 BGREWRITEAOF \u547d\u4ee4\u7ed9\u670d\u52a1\u7aef\uff0c\u670d\u52a1\u7aef\u4f1a\u5982\u4f55\u5904\u7406\u5462\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b54\u6848\u662f\uff1a\u5728\u6267\u884c BGSAVE \u671f\u95f4\uff0c\u4e0a\u8ff0\u4e09\u4e2a\u547d\u4ee4\u90fd\u4e0d\u4f1a\u88ab\u6267\u884c\u3002\u539f\u56e0\u662f\uff1a\u524d\u4e24\u4e2a\u4f1a\u88ab\u76f4\u63a5\u62d2\u7edd\uff0c\u539f\u56e0\u662f\u4e3a\u4e86\u907f\u514d\u7236\u5b50\u8fdb\u7a0b\u540c\u65f6\u6267\u884c\u4e24\u4e2a rdbSave \u8c03\u7528\uff0c\u9632\u6b62\u4ea7\u751f\u7ade\u4e89\u6761\u4ef6\u3002\u800c BGREWRITEAOF \u547d\u4ee4\u5219\u662f\u4f1a\u88ab\u5ef6\u8fdf\u5230 BGSAVE \u547d\u4ee4\u6267\u884c\u4e4b\u540e\u518d\u6267\u884c\u3002\u4f46\u5982\u679c\u662f BGREWRITEAOF \u547d\u4ee4\u6b63\u5728\u6267\u884c\uff0c\u6b64\u65f6\u5ba2\u6237\u7aef\u53d1\u9001 BGSAVE \u547d\u4ee4\u5219\u4f1a\u88ab\u62d2\u7edd\u3002\u56e0\u4e3a BGREWRITEAOF \u548c BGSAVE \u90fd\u662f\u7531\u5b50\u8fdb\u7a0b\u6267\u884c\u7684\uff0c\u6240\u4ee5\u5728\u64cd\u4f5c\u65b9\u9762\u6ca1\u6709\u51b2\u7a81\u7684\u5730\u65b9\uff0c\u4e0d\u80fd\u540c\u65f6\u6267\u884c\u7684\u539f\u56e0\u662f\u6027\u80fd\u4e0a\u7684\u8003\u8651\u2014\u2014\u5e76\u53d1\u51fa\u4e24\u4e2a\u5b50\u8fdb\u7a0b\uff0c\u5e76\u4e14\u8fd9\u4e24\u4e2a\u5b50\u8fdb\u7a0b\u90fd\u4f1a\u540c\u65f6\u6267\u884c\u5927\u91cf io\uff08\u78c1\u76d8\u5199\u5165\uff09\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bf4\u5b8c RDB \u6587\u4ef6\u7684\u521b\u5efa\uff0c\u6211\u4eec\u5728\u6765\u8bf4\u8bf4 RDB \u6587\u4ef6\u7684\u52a0\u8f7d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u7684 RDB \u6301\u4e45\u5316\u6587\u4ef6\u7684\u8f7d\u5165\u662f\u5728\u670d\u52a1\u5668\u542f\u52a8\u65f6\u81ea\u52a8\u6267\u884c\u7684\uff0c\u6240\u4ee5 Redis \u5e76\u6ca1\u6709\u7528\u4e8e\u8f7d\u5165\u7684\u547d\u4ee4\uff0c\u5e76\u4e14\u5728\u8f7d\u5165\u671f\u95f4\u4f1a\u963b\u585e\u4e3b\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53e6\u5916\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u53ea\u8981\u6ca1\u6709\u5f00\u542f AOF \u6301\u4e45\u5316\u529f\u80fd\uff0c\u5728\u542f\u52a8\u65f6\u53ea\u8981\u68c0\u6d4b\u5230\u6709 RDB \u6587\u4ef6\uff0c\u5c31\u4f1a\u81ea\u52a8\u8f7d\u5165\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u670d\u52a1\u5668\u6709\u5f00\u542f AOF \u6301\u4e45\u5316\u529f\u80fd\u65f6\uff0c\u670d\u52a1\u5668\u5c06\u4f1a\u4f18\u5148\u4f7f\u7528 AOF \u6587\u4ef6\u6765\u8fd8\u539f\u6570\u636e\u5e93\u72b6\u6001\u3002\u539f\u56e0\u662f AOF \u6587\u4ef6\u7684\u66f4\u65b0\u9891\u7387\u901a\u5e38\u6bd4 RDB \u6587\u4ef6\u7684\u66f4\u65b0\u9891\u7387\u9ad8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">RDB \u6301\u4e45\u5316\u901a\u8fc7\u4fdd\u5b58\u6570\u636e\u5e93\u72b6\u6001\u6765\u6301\u4e45\u5316\u3002\u800c AOF \u4e0e\u4e4b\u4e0d\u540c\uff0c\u5b83\u662f\u901a\u8fc7\u4fdd\u5b58\u5bf9\u6570\u636e\u5e93\u7684\u5199\u547d\u4ee4\u6765\u8bb0\u5f55\u6570\u636e\u5e93\u72b6\u6001\u3002\u6bd4\u5982\u6267\u884c\u4e86 set key \u4e1a\u4f59\u8349\uff0cRedis \u5c31\u4f1a\u5c06\u8fd9\u6761\u5199\u547d\u4ee4\u4fdd\u5b58\u5230 AOF \u6587\u4ef6\u4e2d\u3002\u5728\u670d\u52a1\u5668\u4e0b\u6b21\u542f\u52a8\u65f6\uff0c\u5c31\u53ef\u4ee5\u901a\u8fc7\u8f7d\u5165\u548c\u6267\u884c AOF \u6587\u4ef6\u4e2d\u4fdd\u5b58\u7684\u547d\u4ee4\uff0c\u6765\u8fd8\u539f\u670d\u52a1\u5668\u5173\u95ed\u524d\u7684\u6570\u636e\u5e93\u72b6\u6001\u4e86\u3002\u603b\u4f53\u6d41\u7a0b\u548c RDB \u6301\u4e45\u5316\u4e00\u6837\uff0c\u90fd\u662f\u521b\u5efa\u4e00\u4e2a xxx \u6587\u4ef6\u3001\u5728\u670d\u52a1\u5668\u4e0b\u6b21\u542f\u52a8\u65f6\u5c31\u8f7d\u5165\u8fd9\u4e2a\u6587\u4ef6\u6765\u8fd8\u539f\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AOF \u6301\u4e45\u5316\u529f\u80fd\u7684\u5b9e\u73b0\u53ef\u4ee5\u5206\u4e3a 3 \u4e2a\u6b65\u9aa4\uff1a\u547d\u4ee4\u8ffd\u52a0\u3001\u6587\u4ef6\u5199\u5165\u3001\u6587\u4ef6\u540c\u6b65\u3002\u547d\u4ee4\u8ffd\u52a0\u5f88\u597d\u7406\u89e3\uff0c\u5c31\u662f\u5c06\u5199\u547d\u4ee4\u8ffd\u52a0\u5230 AOF \u7f13\u51b2\u533a\u7684\u672b\u5c3e\u3002\u6587\u4ef6\u5199\u5165\u5c31\u662f\u5c06\u7f13\u51b2\u533a\u5185\u5bb9\u5199\u5230 AOF \u6587\u4ef6\uff0c\u6587\u4ef6\u540c\u6b65\u662f\u5c06 AOF \u6587\u4ef6\u4fdd\u5b58\u5230\u78c1\u76d8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e2\u7136 AOF \u6301\u4e45\u5316\u662f\u901a\u8fc7\u4fdd\u5b58\u5199\u547d\u4ee4\u5230\u6587\u4ef6\u7684\uff0c\u90a3\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u8fd9\u4e2a AOF \u6587\u4ef6\u8bb0\u5f55\u7684\u5185\u5bb9\u5c31\u8d8a\u6765\u8d8a\u591a\uff0c\u6587\u4ef6\u4f53\u79ef\u4e5f\u5c31\u8d8a\u6765\u8d8a\u5927\uff0c\u5bf9\u5176\u8fdb\u884c\u6570\u636e\u8fd8\u539f\u7684\u65f6\u95f4\u4e5f\u5c31\u8d8a\u6765\u8d8a\u4e45\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\uff0cRedis \u63d0\u4f9b\u4e86 AOF \u6587\u4ef6\u91cd\u5199\u529f\u80fd\u3002\u8fd9\u4e2a\u529f\u80fd\u53ef\u4ee5\u7528\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 AOF 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class=\"wp-block-paragraph\">\u6bd4\u5982\u65e7\u6587\u4ef6\u4fdd\u5b58\u4e86\u5bf9\u67d0\u4e2a key \u6709 4 \u4e2a set \u547d\u4ee4\uff0c\u7ecf\u8fc7\u91cd\u5199\u4e4b\u540e\uff0c\u65b0\u6587\u4ef6\u53ea\u4f1a\u8bb0\u5f55\u6700\u540e\u4e00\u6b21\u5bf9\u8be5 key \u7684 set \u547d\u4ee4\u3002\u56e0\u6b64\u8bf4\u65b0\u6587\u4ef6\u4e0d\u4f1a\u5305\u542b\u4efb\u4f55\u5197\u4f59\u547d\u4ee4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u4e3a\u91cd\u5199\u6d89\u53ca\u5230\u5927\u91cf IO \u64cd\u4f5c\uff0c\u6240\u4ee5 Redis \u662f\u7528\u5b50\u8fdb\u7a0b\u6765\u5b9e\u73b0\u8fd9\u4e2a\u529f\u80fd\u7684\uff0c\u5426\u5219\u5c06\u4f1a\u963b\u585e\u4e3b\u8fdb\u7a0b\u3002\u8be5\u5b50\u8fdb\u7a0b\u62e5\u6709\u7236\u8fdb\u7a0b\u7684\u6570\u636e\u526f\u672c\uff0c\u53ef\u4ee5\u907f\u514d\u5728\u4f7f\u7528\u9501\u7684\u60c5\u51b5\u4e0b\uff0c\u4fdd\u8bc1\u6570\u636e\u7684\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n<p 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