{"id":26891,"date":"2023-04-27T16:36:04","date_gmt":"2023-04-27T08:36:04","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=26891"},"modified":"2023-07-30T23:34:51","modified_gmt":"2023-07-30T15:34:51","slug":"redis%e7%9a%84%e6%8c%81%e4%b9%85%e5%8c%96%e6%9c%ba%e5%88%b6%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/26891.html","title":{"rendered":"Redis\u7684\u6301\u4e45\u5316\u673a\u5236\u662f\u4ec0\u4e48"},"content":{"rendered":"
\n

Redis \u7684\u6570\u636e\u5168\u90e8\u5728\u5185\u5b58\u91cc\uff0c\u5982\u679c\u7a81\u7136\u5b95\u673a\uff0c\u6570\u636e\u5c31\u4f1a\u5168\u90e8\u4e22\u5931\uff0c\u56e0\u6b64\u5fc5\u987b\u6709\u4e00\u79cd\u673a\u5236\u6765\u4fdd\u8bc1 Redis \u7684\u6570\u636e\u4e0d\u4f1a\u56e0\u4e3a\u6545\u969c\u800c\u4e22\u5931\uff0c\u8fd9\u79cd\u673a\u5236\u5c31\u662f Redis \u7684\u6301\u4e45\u5316\u673a\u5236\u3002Redis \u7684\u6301\u4e45\u5316\u673a\u5236\u6709\u4e24\u79cd\uff0c\u540d\u5217\u524d\u8305\u79cd\u662fRDB\u5feb\u7167\uff0c\u7b2c\u4e8c\u79cd\u662f AOF \u65e5\u5fd7\u3002<\/p>\n<\/blockquote>\n

\n
\"\"<\/figure>\n<\/div>\n

\u4e00\u3001Redis\u7684\u6301\u4e45\u5316\u673a\u5236<\/strong><\/h2>\n

Redis \u7684\u6570\u636e\u5168\u90e8\u5728\u5185\u5b58\u91cc\uff0c\u5982\u679c\u7a81\u7136\u5b95\u673a\uff0c\u6570\u636e\u5c31\u4f1a\u5168\u90e8\u4e22\u5931\uff0c\u56e0\u6b64\u5fc5\u987b\u6709\u4e00\u79cd\u673a\u5236\u6765\u4fdd\u8bc1 Redis \u7684\u6570\u636e\u4e0d\u4f1a\u56e0\u4e3a\u6545\u969c\u800c\u4e22\u5931\uff0c\u8fd9\u79cd\u673a\u5236\u5c31\u662f Redis \u7684\u6301\u4e45\u5316\u673a\u5236\u3002<\/p>\n

Redis \u7684\u6301\u4e45\u5316\u673a\u5236\u6709\u4e24\u79cd\uff0c\u540d\u5217\u524d\u8305\u79cd\u662fRDB\u5feb\u7167\uff0c\u7b2c\u4e8c\u79cd\u662f AOF \u65e5\u5fd7\u3002\u5feb\u7167\u662f\u4e00\u6b21\u5168\u91cf\u5907\u4efd\uff0cAOF \u65e5\u5fd7\u662f\u8fde\u7eed\u7684\u589e\u91cf\u5907\u4efd\u3002\u5feb\u7167\u662f\u5185\u5b58\u6570\u636e\u7684\u4e8c\u8fdb\u5236\u5e8f\u5217\u5316\u5f62\u5f0f\uff0c\u5728\u5b58\u50a8\u4e0a\u975e\u5e38\u7d27\u51d1\uff0c\u800c AOF \u65e5\u5fd7\u8bb0\u5f55\u7684\u662f\u5185\u5b58\u6570\u636e\u4fee\u6539\u7684\u6307\u4ee4\u8bb0\u5f55\u6587\u672c\u3002<\/p>\n

1<\/strong>\u3001RDB\u5feb\u7167<\/strong><\/h3>\n

RDB\u5feb\u7167\u662f\u67d0\u4e2a\u65f6\u95f4\u70b9\u7684\u4e00\u6b21\u5168\u91cf\u6570\u636e\u5907\u4efd\uff0c\u662f\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u5728\u5b58\u50a8\u4e0a\u975e\u5e38\u7d27\u51d1\u3002<\/p>\n

1.1 <\/strong>\u89e6\u53d1\u673a\u5236<\/strong><\/p>\n

RDB\u6301\u4e45\u5316\u89e6\u53d1\u673a\u5236\u5206\u4e3a\uff1a\u624b\u52a8\u89e6\u53d1\u548c\u81ea\u52a8\u89e6\u53d1\u00a0\u624b\u52a8\u89e6\u53d1<\/p>\n

save\u547d\u4ee4\uff1a\u4f1a\u963b\u585e\u5f53\u524d\u670d\u52a1\u5668\uff0c\u76f4\u5230RDB\u5b8c\u6210\u4e3a\u6b62\uff0c\u5982\u679c\u6570\u636e\u91cf\u5927\u7684\u8bdd\u4f1a\u9020\u6210\u957f\u65f6\u95f4\u7684\u963b\u585e\uff0c\u7ebf\u4e0a\u73af\u5883\u4e00\u822c\u7981\u6b62\u4f7f\u7528\u00a0bgsave\u547d\u4ee4\uff1a\u5c31\u662fbackground save\uff0c\u6267\u884cbgsave\u547d\u4ee4\u65f6Redis\u4e3b\u8fdb\u7a0b\u4f1afork\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u6765\u5b8c\u6210RDB\u7684\u8fc7\u7a0b\uff0c\u5b8c\u6210\u540e\u81ea\u52a8\u7ed3\u675f\uff08\u64cd\u4f5c\u7cfb\u7edf\u7684\u591a\u8fdb\u7a0bCopy On Write\u673a\u5236\uff0c\u7b80\u79f0COW\uff09\u3002\u6240\u4ee5Redis\u4e3b\u8fdb\u7a0b\u963b\u585e\u65f6\u95f4\u53ea\u6709fork\u9636\u6bb5\u7684\u90a3\u4e00\u4e0b\u3002\u76f8\u5bf9\u4e8esave\uff0c\u963b\u585e\u65f6\u95f4\u5f88\u77ed\u3002<\/p>\n

\u81ea\u52a8\u89e6\u53d1<\/p>\n

\u573a\u666f\u4e00\uff1a\u914d\u7f6eredis.conf\uff0c\u89e6\u53d1\u89c4\u5219\uff0c\u81ea\u52a8\u6267\u884c<\/p>\n

# \u5f53\u5728\u89c4\u5b9a\u7684\u65f6\u95f4\u5185\uff0cRedis\u53d1\u751f\u4e86\u5199\u64cd\u4f5c\u7684\u4e2a\u6570\u6ee1\u8db3\u6761\u4ef6\uff0c\u4f1a\u89e6\u53d1\u53d1\u751fBGSAVE\u547d\u4ee4\u3002<\/p>\n

# save <seconds> <changes><\/p>\n

# \u5f53\u7528\u6237\u8bbe\u7f6e\u4e86\u591a\u4e2asave\u7684\u9009\u9879\u914d\u7f6e\uff0c\u53ea\u8981\u5176\u4e2d\u4efb\u4e00\u6761\u6ee1\u8db3\uff0cRedis\u90fd\u4f1a\u89e6\u53d1\u4e00\u6b21BGSAVE\u64cd\u4f5c<\/p>\n

save 900 1<\/p>\n

save 300 10<\/p>\n

save 60 10000<\/p>\n

# \u4ee5\u4e0a\u914d\u7f6e\u7684\u542b\u4e49\uff1a900\u79d2\u4e4b\u5185\u81f3\u5c11\u4e00\u6b21\u5199\u64cd\u4f5c\u3001300\u79d2\u4e4b\u5185\u81f3\u5c11\u53d1\u751f10\u6b21\u5199\u64cd\u4f5c\u3001<\/p>\n

# 60\u79d2\u4e4b\u5185\u53d1\u751f\u81f3\u5c1110000\u6b21\u5199\u64cd\u4f5c\uff0c\u53ea\u8981\u6ee1\u8db3\u4efb\u4e00\u6761\u4ef6\uff0c\u5747\u4f1a\u89e6\u53d1bgsave<\/p>\n

\u573a\u666f\u4e8c\uff1a\u6267\u884cshutdown\u547d\u4ee4\u5173\u95ed\u670d\u52a1\u5668\u65f6\uff0c\u5982\u679c\u6ca1\u6709\u5f00\u542fAOF\u6301\u4e45\u5316\u529f\u80fd\uff0c\u90a3\u4e48\u4f1a\u81ea\u52a8\u6267\u884c\u4e00\u6b21bgsave<\/p>\n

\u573a\u666f\u4e09\uff1a\u4e3b\u4ece\u540c\u6b65\uff08slave\u548cmaster\u5efa\u7acb\u540c\u6b65\u673a\u5236\uff09<\/p>\n

1.2 RDB<\/strong>\u6267\u884c\u6d41\u7a0b<\/strong><\/p>\n

Redis \u4f7f\u7528\u64cd\u4f5c\u7cfb\u7edf\u7684\u591a\u8fdb\u7a0b cow(Copy On Write) \u673a\u5236\u6765\u5b9e\u73b0RDB\u5feb\u7167\u6301\u4e45\u5316<\/p>\n

    \n
  1. \u6267\u884cbgsave\u547d\u4ee4\u7684\u65f6\u5019\uff0cRedis\u4e3b\u8fdb\u7a0b\u4f1a\u68c0\u67e5\u662f\u5426\u6709\u5b50\u8fdb\u7a0b\u5728\u6267\u884cRDB\/AOF\u6301\u4e45\u5316\u4efb\u52a1\uff0c\u5982\u679c\u6709\u7684\u8bdd\uff0c\u76f4\u63a5\u8fd4\u56de<\/li>\n
  2. Redis\u4e3b\u8fdb\u7a0b\u4f1afork\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u6765\u6267\u884c\u6267\u884cRDB\u64cd\u4f5c\uff0cfork\u64cd\u4f5c\u4f1a\u5bf9\u4e3b\u8fdb\u7a0b\u9020\u6210\u963b\u585e\uff08\u5f71\u54cdRedis\u7684\u8bfb\u5199\uff09\uff0cfork\u64cd\u4f5c\u5b8c\u6210\u540e\u4f1a\u53d1\u6d88\u606f\u7ed9\u4e3b\u8fdb\u7a0b\uff0c\u4ece\u800c\u4e0d\u518d\u963b\u585e\u4e3b\u8fdb\u7a0b\u3002\uff08\u963b\u585e\u4ec5\u6307\u4e3b\u8fdb\u7a0bfork\u5b50\u8fdb\u7a0b\u7684\u8fc7\u7a0b\uff0c\u540e\u7eed\u5b50\u8fdb\u7a0b\u6267\u884c\u64cd\u4f5c\u65f6\u4e0d\u4f1a\u963b\u585e\uff09<\/li>\n
  3. RDB\u5b50\u8fdb\u7a0b\u4f1a\u6839\u636eRedis\u4e3b\u8fdb\u7a0b\u7684\u5185\u5b58\u751f\u6210\u4e34\u65f6\u7684\u5feb\u7167\u6587\u4ef6\uff0c\u6301\u4e45\u5316\u5b8c\u6210\u540e\u4f1a\u4f7f\u7528\u4e34\u65f6\u5feb\u7167\u6587\u4ef6\u66ff\u6362\u6389\u539f\u6765\u7684RDB\u6587\u4ef6\u3002\uff08\u8be5\u8fc7\u7a0b\u4e2d\u4e3b\u8fdb\u7a0b\u7684\u8bfb\u5199\u4e0d\u53d7\u5f71\u54cd\uff0c\u4f46Redis\u7684\u5199\u64cd\u4f5c\u4e0d\u4f1a\u540c\u6b65\u5230\u4e3b\u8fdb\u7a0b\u7684\u4e3b\u5185\u5b58\u4e2d\uff0c\u800c\u662f\u4f1a\u5199\u5230\u4e00\u4e2a\u4e34\u65f6\u7684\u5185\u5b58\u533a\u57df\u4f5c\u4e3a\u4e00\u4e2a\u526f\u672c\uff09<\/li>\n
  4. \u5b50\u8fdb\u7a0b\u5b8c\u6210RDB\u6301\u4e45\u5316\u540e\u4f1a\u53d1\u6d88\u606f\u7ed9\u4e3b\u8fdb\u7a0b\uff0c\u901a\u77e5RDB\u6301\u4e45\u5316\u5b8c\u6210\uff08\u5c06\u4e0a\u9636\u6bb5\u5185\u5b58\u526f\u672c\u4e2d\u7684\u589e\u91cf\u5199\u6570\u636e\u540c\u6b65\u5230\u4e3b\u5185\u5b58\uff09<\/li>\n<\/ol>\n

    1.3 RDB<\/strong>\u7684\u4f18\u7f3a\u70b9<\/strong><\/p>\n

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

      \n
    • RDB\u6587\u4ef6\u5c0f\uff0c\u975e\u5e38\u9002\u5408\u5b9a\u65f6\u5907\u4efd\uff0c\u7528\u4e8e\u707e\u96be\u6062\u590d<\/li>\n
    • Redis\u52a0\u8f7dRDB\u6587\u4ef6\u7684\u901f\u5ea6\u6bd4AOF\u5feb\u5f88\u591a\uff0c\u56e0\u4e3aRDB\u6587\u4ef6\u4e2d\u76f4\u63a5\u5b58\u50a8\u7684\u65f6\u5185\u5b58\u6570\u636e\uff0c\u800cAOF\u6587\u4ef6\u4e2d\u5b58\u50a8\u7684\u662f\u4e00\u6761\u6761\u547d\u4ee4\uff0c\u9700\u8981\u91cd\u6f14\u547d\u4ee4\u3002<\/li>\n<\/ul>\n

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

        \n
      • RDB\u65e0\u6cd5\u505a\u5230\u5b9e\u65f6\u6301\u4e45\u5316\uff0c\u82e5\u5728\u4e24\u6b21bgsave\u95f4\u5b95\u673a\uff0c\u5219\u4f1a\u4e22\u5931\u533a\u95f4\uff08\u5206\u949f\u7ea7\uff09\u7684\u589e\u91cf\u6570\u636e\uff0c\u4e0d\u9002\u7528\u4e8e\u5b9e\u65f6\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u666f<\/li>\n
      • RDB\u7684cow\u673a\u5236\u4e2d\uff0cfork\u5b50\u8fdb\u7a0b\u5c5e\u4e8e\u91cd\u91cf\u7ea7\u64cd\u4f5c\uff0c\u5e76\u4e14\u4f1a\u963b\u585eredis\u4e3b\u8fdb\u7a0b<\/li>\n
      • \u5b58\u5728\u8001\u7248\u672c\u7684Redis\u4e0d\u517c\u5bb9\u65b0\u7248\u672cRDB\u683c\u5f0f\u6587\u4ef6\u7684\u95ee\u9898<\/li>\n<\/ul>\n

        2<\/strong>\u3001AOF\uff08append only file\uff09\u65e5\u5fd7<\/strong><\/h3>\n

        AOF\u65e5\u5fd7\u662f\u6301\u7eed\u589e\u91cf\u7684\u5907\u4efd\uff0c\u662f\u57fa\u4e8e\u5199\u547d\u4ee4\u5b58\u50a8\u7684\u53ef\u8bfb\u7684\u6587\u672c\u6587\u4ef6\u3002AOF\u65e5\u5fd7\u4f1a\u5728\u6301\u7eed\u8fd0\u884c\u4e2d\u6301\u7eed\u589e\u5927\uff0c\u7531\u4e8eRedis\u91cd\u542f\u8fc7\u7a0b\u9700\u8981\u4f18\u5148\u52a0\u8f7dAOF\u65e5\u5fd7\u8fdb\u884c\u6307\u4ee4\u91cd\u653e\u4ee5\u6062\u590d\u6570\u636e\uff0c\u6062\u590d\u65f6\u95f4\u4f1a\u65e0\u6bd4\u6f2b\u957f\u3002\u6240\u4ee5\u9700\u8981\u5b9a\u671f\u8fdb\u884cAOF\u91cd\u5199\uff0c\u5bf9AOF\u65e5\u5fd7\u8fdb\u884c\u7626\u8eab\u3002\u76ee\u524dAOF\u662fRedis\u6301\u4e45\u5316\u7684\u4e3b\u6d41\u65b9\u5f0f\u3002<\/p>\n

        2.1 <\/strong>\u5f00\u542f\u65b9\u5f0f<\/strong><\/p>\n

        AOF\u9ed8\u8ba4\u662f\u5173\u95ed\u7684\uff0c\u901a\u8fc7redis.conf\u914d\u7f6e\u6587\u4ef6\u8fdb\u884c\u5f00\u542f<\/p>\n

        ## \u6b64\u9009\u9879\u4e3aaof\u529f\u80fd\u7684\u5f00\u5173\uff0c\u9ed8\u8ba4\u4e3a\u201cno\u201d\uff0c\u53ef\u4ee5\u901a\u8fc7\u201cyes\u201d\u6765\u5f00\u542faof\u529f\u80fd\u00a0<\/p>\n

        ## \u53ea\u6709\u5728\u201cyes\u201d\u4e0b\uff0caof\u91cd\u5199\/\u6587\u4ef6\u540c\u6b65\u7b49\u7279\u6027\u624d\u4f1a\u751f\u6548\u00a0<\/p>\n

        appendonly yes\u00a0<\/p>\n

        ## \u6307\u5b9aaof\u6587\u4ef6\u540d\u79f0\u00a0<\/p>\n

        appendfilename appendonly.aof\u00a0<\/p>\n

        ## \u6307\u5b9aaof\u64cd\u4f5c\u4e2d\u6587\u4ef6\u540c\u6b65\u7b56\u7565\uff0c\u6709\u4e09\u4e2a\u5408\u6cd5\u503c\uff1aalways everysec no,\u9ed8\u8ba4\u4e3aeverysec\u00a0<\/p>\n

        appendfsync everysec\u00a0<\/p>\n

        ## \u5728aof-rewrite\u671f\u95f4\uff0cappendfsync\u662f\u5426\u6682\u7f13\u6587\u4ef6\u540c\u6b65\uff0c\u201dno\u201d\u8868\u793a\u201c\u4e0d\u6682\u7f13\u201d\uff0c\u201cyes\u201d\u8868\u793a\u201c\u6682\u7f13\u201d\uff0c\u9ed8\u8ba4\u4e3a\u201cno\u201d\u00a0<\/p>\n

        no-appendfsync-on-rewrite no\u00a0<\/p>\n

        ## aof\u6587\u4ef6rewrite\u89e6\u53d1\u7684\u6700\u5c0f\u6587\u4ef6\u5c3a\u5bf8(mb,gb),\u53ea\u6709\u5927\u4e8e\u6b64aof\u6587\u4ef6\u5927\u4e8e\u6b64\u5c3a\u5bf8\u662f\u624d\u4f1a\u89e6\u53d1rewrite\uff0c\u9ed8\u8ba4\u201c64mb\u201d\uff0c\u5efa\u8bae\u201c512mb\u201d\u00a0<\/p>\n

        auto-aof-rewrite-min-size 64mb\u00a0<\/p>\n

        ## \u76f8\u5bf9\u4e8e\u201c\u4e0a\u4e00\u6b21\u201drewrite\uff0c\u672c\u6b21rewrite\u89e6\u53d1\u65f6aof\u6587\u4ef6\u5e94\u8be5\u589e\u957f\u7684\u767e\u5206\u6bd4\u00a0<\/p>\n

        ## \u6bcf\u4e00\u6b21rewrite\u4e4b\u540e\uff0credis\u90fd\u4f1a\u8bb0\u5f55\u4e0b\u6b64\u65f6\u201c\u65b0aof\u201d\u6587\u4ef6\u7684\u5927\u5c0f(\u4f8b\u5982A)<\/p>\n

        ## aof\u6587\u4ef6\u589e\u957f\u5230A*(1 + p)\u4e4b\u540e\uff0c\u89e6\u53d1\u4e0b\u4e00\u6b21rewrite\uff0c\u6bcf\u4e00\u6b21aof\u8bb0\u5f55\u7684\u6dfb\u52a0\uff0c\u90fd\u4f1a\u68c0\u6d4b\u5f53\u524daof\u6587\u4ef6\u7684\u5c3a\u5bf8\u3002\u00a0<\/p>\n

        auto-aof-rewrite-percentage 100<\/p>\n

        AOF\u662f\u6587\u4ef6\u64cd\u4f5c\uff0c\u5bf9\u4e8e\u53d8\u66f4\u64cd\u4f5c\u6bd4\u8f83\u5bc6\u96c6\u7684server\uff0c\u90a3\u4e48\u5c06\u9020\u6210\u78c1\u76d8IO\u7684\u8d1f\u8377\u52a0\u91cd\u3002\u6b64\u5916linux\u5bf9\u6587\u4ef6\u64cd\u4f5c\u91c7\u53d6\u4e86\u201c\u5ef6\u8fdf\u5199\u5165\u201d\u624b\u6bb5\uff0c\u5373\u5e76\u975e\u6bcf\u6b21write\u64cd\u4f5c\u90fd\u4f1a\u89e6\u53d1\u5b9e\u9645\u78c1\u76d8\u64cd\u4f5c\uff0c\u800c\u662f\u8fdb\u5165\u4e86buffer\u4e2d\uff0c\u5f53buffer\u6570\u636e\u8fbe\u5230\u9600\u503c\u65f6\u89e6\u53d1\u5b9e\u9645\u5199\u5165(\u4e5f\u6709\u5176\u4ed6\u65f6\u673a)\uff0c\u8fd9\u662flinux\u5bf9\u6587\u4ef6\u7cfb\u7edf\u7684\u4f18\u5316\u3002<\/p>\n

        Linux \u7684glibc\u63d0\u4f9b\u4e86fsync(int fd)\u51fd\u6570\u53ef\u4ee5\u5c06\u6307\u5b9a\u6587\u4ef6\u7684\u5185\u5bb9\u5f3a\u5236\u4ece\u5185\u6838\u7f13\u5b58\u5237\u5230\u78c1\u76d8\u3002\u53ea\u8981 Redis \u8fdb\u7a0b\u5b9e\u65f6\u8c03\u7528 fsync \u51fd\u6570\u5c31\u53ef\u4ee5\u4fdd\u8bc1 aof \u65e5\u5fd7\u4e0d\u4e22\u5931\u3002\u4f46\u662f fsync \u662f\u4e00\u4e2a\u78c1\u76d8 IO \u64cd\u4f5c\uff0c\u5b83\u5f88\u6162\uff01\u5982\u679c Redis \u6267\u884c\u4e00\u6761\u6307\u4ee4\u5c31\u8981 fsync \u4e00\u6b21\uff0c\u90a3\u4e48 Redis \u9ad8\u6027\u80fd\u7684\u5730\u4f4d\u5c31\u4e0d\u4fdd\u4e86\u3002<\/p>\n

        \u56e0\u6b64\u5728\u4e0a\u8ff0\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u53ef\u89c2\u5bdf\u5230Redis\u4e2d\u63d0\u4f9b\u4e863\u4e2dAOF\u8bb0\u5f55\u540c\u6b65\u9009\u9879\uff1a<\/p>\n

          \n
        • always\uff1a\u6bcf\u4e00\u6761AOF\u8bb0\u5f55\u90fd\u7acb\u5373\u540c\u6b65\u5230\u6587\u4ef6\uff0c\u6027\u80fd\u5f88\u4f4e\uff0c\u4f46\u8f83\u4e3a\u5b89\u5168\u3002<\/li>\n
        • everysec\uff1a\u6bcf\u79d2\u540c\u6b65\u4e00\u6b21\uff0c\u6027\u80fd\u548c\u5b89\u5168\u90fd\u6bd4\u8f83\u4e2d\u5eb8\u7684\u65b9\u5f0f\uff0c\u4e5f\u662fredis\u63a8\u8350\u7684\u65b9\u5f0f\u3002\u5982\u679c\u9047\u5230\u7269\u7406\u670d\u52a1\u5668\u6545\u969c\uff0c\u53ef\u80fd\u5bfc\u81f4\u975e\u5e38\u591a1\u79d2\u7684AOF\u8bb0\u5f55\u4e22\u5931\u3002<\/li>\n
        • no\uff1aRedis\u6c38\u4e0d\u76f4\u63a5\u8c03\u7528\u6587\u4ef6\u540c\u6b65\uff0c\u800c\u662f\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u6765\u51b3\u5b9a\u4f55\u65f6\u540c\u6b65\u78c1\u76d8\u3002\u6027\u80fd\u8f83\u597d\uff0c\u4f46\u5f88\u4e0d\u5b89\u5168\u3002<\/li>\n<\/ul>\n

          2.2 <\/strong>\u91cd\u5199\uff08rewrite\uff09\u673a\u5236<\/strong><\/p>\n

          AOF\u65e5\u5fd7\u4f1a\u5728\u6301\u7eed\u8fd0\u884c\u4e2d\u6301\u7eed\u589e\u5927\uff0c\u9700\u8981\u5b9a\u671f\u8fdb\u884cAOF\u91cd\u5199\uff0c\u5bf9AOF\u65e5\u5fd7\u8fdb\u884c\u7626\u8eab\u3002<\/p>\n

          AOF Rewrite\u867d\u7136\u662f\u201c\u538b\u7f29\u201dAOF\u6587\u4ef6\u7684\u8fc7\u7a0b\uff0c\u4f46\u5e76\u975e\u91c7\u7528\u201c\u57fa\u4e8e\u539fAOF\u6587\u4ef6\u201d\u6765\u91cd\u5199\u6216\u538b\u7f29\uff0c\u800c\u662f\u91c7\u53d6\u4e86\u7c7b\u4f3cRDB\u5feb\u7167\u7684\u65b9\u5f0f\uff1a\u57fa\u4e8eCopy On Write\uff0c\u5168\u91cf\u904d\u5386\u5185\u5b58\u4e2d\u6570\u636e\uff0c\u7136\u540e\u9010\u4e2a\u5e8f\u5217\u5230AOF\u6587\u4ef6\u4e2d\u3002\u56e0\u6b64AOF rewrite\u80fd\u591f\u6b63\u786e\u53cd\u5e94\u5f53\u524d\u5185\u5b58\u6570\u636e\u7684\u72b6\u6001\u3002<\/p>\n

          AOF\u91cd\u5199\uff08bgrewriteaof\uff09\u548cRDB\u5feb\u7167\u5199\u5165\uff08bgsave\uff09\u8fc7\u7a0b\u7c7b\u4f3c\uff0c\u4e8c\u8005\u90fd\u6d88\u8017\u78c1\u76d8IO\u3002Redis\u91c7\u53d6\u4e86\u201cschedule\u201d\u7b56\u7565\uff1a\u65e0\u8bba\u662f\u201c\u4eba\u5de5\u5e72\u9884\u201d\u8fd8\u662f\u7cfb\u7edf\u89e6\u53d1\uff0c\u5feb\u7167\u548c\u91cd\u5199\u9700\u8981\u9010\u4e2a\u88ab\u6267\u884c\u3002<\/p>\n

          \u91cd\u5199\u8fc7\u7a0b\u4e2d\uff0c\u5bf9\u4e8e\u65b0\u7684\u53d8\u66f4\u64cd\u4f5c\u5c06\u4ecd\u7136\u88ab\u5199\u5165\u5230\u539fAOF\u6587\u4ef6\u4e2d\uff0c\u540c\u65f6\u8fd9\u4e9b\u65b0\u7684\u53d8\u66f4\u64cd\u4f5c\u4e5f\u4f1a\u88abRedis\u6536\u96c6\u8d77\u6765\u3002\u5f53\u5185\u5b58\u4e2d\u7684\u6570\u636e\u88ab\u5168\u90e8\u5199\u5165\u5230\u65b0\u7684AOF\u6587\u4ef6\u4e4b\u540e\uff0c\u6536\u96c6\u7684\u65b0\u7684\u53d8\u66f4\u64cd\u4f5c\u4e5f\u5c06\u88ab\u4e00\u5e76\u8ffd\u52a0\u5230\u65b0\u7684AOF\u6587\u4ef6\u4e2d\u3002\u7136\u540e\u5c06\u65b0AOF\u6587\u4ef6\u91cd\u547d\u540d\u4e3aappendonly.aof\uff0c\u4f7f\u7528\u65b0AOF\u6587\u4ef6\u66ff\u6362\u8001\u6587\u4ef6\uff0c\u6b64\u540e\u6240\u6709\u7684\u64cd\u4f5c\u90fd\u5c06\u88ab\u5199\u5165\u65b0\u7684AOF\u6587\u4ef6\u3002<\/p>\n

          2.3 <\/strong>\u89e6\u53d1\u673a\u5236<\/strong><\/p>\n

          \u548cRDB\u7c7b\u4f3c\uff0cAOF\u89e6\u53d1\u673a\u5236\u4e5f\u5206\u4e3a\uff1a\u624b\u52a8\u89e6\u53d1\u548c\u81ea\u52a8\u89e6\u53d1<\/p>\n

          \u624b\u52a8\u89e6\u53d1\u00a0\u76f4\u63a5\u8c03\u7528bgrewriteaof\u547d\u4ee4<\/p>\n

          redis-cli -h ip -p port bgrewriteaof<\/p>\n

          \u81ea\u52a8\u89e6\u53d1<\/p>\n

          \u6839\u636eauto-aof-rewrite-min-size\u548cauto-aof-rewrite-percentage\u53c2\u6570\u786e\u5b9a\u81ea\u52a8\u89e6\u53d1\u65f6\u673a<\/p>\n

          auto-aof-rewrite-min-size:\u8868\u793a\u8fd0\u884cAOF\u91cd\u5199\u65f6\u6587\u4ef6\u6700\u5c0f\u4f53\u79ef\uff0c\u9ed8\u8ba4\u4e3a64MB\uff08\u6211\u4eec\u7ebf\u4e0a\u662f512MB\uff09\u3002<\/p>\n

          auto-aof-rewrite-percentage:\u4ee3\u8868\u5f53\u524dAOF\u6587\u4ef6\u7a7a\u95f4\uff08aof_current_size\uff09\u548c\u4e0a\u4e00\u6b21\u91cd\u5199\u540eAOF\u6587\u4ef6\u7a7a\u95f4\uff08aof_base_size\uff09\u7684\u503c<\/p>\n

          \u81ea\u52a8\u89e6\u53d1\u65f6\u673a\uff1a<\/p>\n

          (aof_current_size > auto-aof-rewrite-min-size ) && (aof_current_size \u2013 aof_base_size) \/ aof_base_size >= auto-aof-rewrite-percentage<\/p>\n

          \u5176\u4e2daof_current_size\u548caof_base_size\u53ef\u4ee5\u5728info Persistence\u7edf\u8ba1\u4fe1\u606f\u4e2d\u67e5\u770b\u3002<\/p>\n

          2.4 AOF<\/strong>\u7684\u4f18\u7f3a\u70b9<\/strong><\/p>\n

          \u4f18\u70b9<\/strong>\u00a0AOF\u53ea\u662f\u8ffd\u52a0\u5199\u65e5\u5fd7\u6587\u4ef6\uff0c\u5bf9\u670d\u52a1\u5668\u6027\u80fd\u5f71\u54cd\u8f83\u5c0f\uff0c\u901f\u5ea6\u6bd4RDB\u8981\u5feb\uff0c\u6d88\u8017\u7684\u5185\u5b58\u8f83\u5c11<\/p>\n

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

            \n
          • AOF\u65b9\u5f0f\u751f\u6210\u7684\u65e5\u5fd7\u6587\u4ef6\u592a\u5927\uff0c\u9700\u8981\u4e0d\u65adAOF\u91cd\u5199\uff0c\u8fdb\u884c\u7626\u8eab\u3002<\/li>\n
          • \u5373\u4f7f\u7ecf\u8fc7AOF\u91cd\u5199\u7626\u8eab\uff0c\u7531\u4e8e\u6587\u4ef6\u662f\u6587\u672c\u6587\u4ef6\uff0c\u6587\u4ef6\u4f53\u79ef\u8f83\u5927\uff08\u76f8\u6bd4\u4e8eRDB\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\uff09\u3002<\/li>\n
          • AOF\u91cd\u6f14\u547d\u4ee4\u5f0f\u7684\u6062\u590d\u6570\u636e\uff0c\u901f\u5ea6\u663e\u7136\u6bd4RDB\u8981\u6162\u3002<\/li>\n<\/ul>\n

            \u5ef6\u4f38\u9605\u8bfb\uff1a<\/strong><\/p>\n

            \u4e8c\u3001\u6df7\u5408\u6301\u4e45\u5316\u662f\u4f18\u5f02\u65b9\u5f0f\u5417<\/strong><\/h2>\n

            \u6df7\u5408\u6301\u4e45\u5316\u4e0d\u4e00\u5b9a\u662f\u4f18\u5f02\u65b9\u5f0f\u3002\u9996\u5148\uff0c\u6df7\u5408\u6301\u4e45\u5316\u662fRedis 4.0\u624d\u5f15\u5165\u7684\u7279\u6027\uff0c\u73b0\u5728\u5f88\u591a \u516c\u53f8\u53ef\u80fd\u90fd\u8fd8\u5728\u4f7f\u75283.x\u7248\u672c\u3002\u4f7f\u7528\u4e0d\u4e86\u8fd9\u4e00\u7279\u6027\u3002<\/p>\n

            \u53e6\u5916\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u8fd9\u79cd\u65b9\u5f0f\u3002Master\u4f7f\u7528AOF\uff0cSlave\u4f7f\u7528RDB\u5feb\u7167\uff0cmaster\u9700\u8981\u9996\u5148\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\uff0c\u5b83\u4f5c\u4e3a\u6570\u636e\u5907\u4efd\u7684\u540d\u5217\u524d\u8305\u9009\u62e9\uff1bslave\u63d0\u4f9b\u53ea\u8bfb\u670d\u52a1\u6216\u4ec5\u4f5c\u4e3a\u5907\u673a\uff0c\u5b83\u7684\u4e3b\u8981\u76ee\u7684\u5c31\u662f\u5feb\u901f\u54cd\u5e94\u5ba2\u6237\u7aefread\u8bf7\u6c42\u6216\u707e\u5207\u6362\u3002<\/p>\n

            \u81f3\u4e8e\u5177\u4f53\u4f7f\u7528\u54ea\u79cd\u6301\u4e45\u5316\u65b9\u5f0f\uff0c\u5c31\u770b\u5927\u5bb6\u6839\u636e\u573a\u666f\u9009\u62e9\u3002\u6ca1\u6709\u8f83\u597d\uff0c\u53ea\u6709\u6700\u5408\u9002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Redis \u7684\u6570\u636e\u5168\u90e8\u5728\u5185\u5b58\u91cc\uff0c\u5982\u679c\u7a81\u7136\u5b95\u673a\uff0c\u6570\u636e\u5c31\u4f1a\u5168\u90e8\u4e22\u5931\uff0c\u56e0\u6b64\u5fc5\u987b\u6709\u4e00\u79cd\u673a\u5236\u6765\u4fdd\u8bc1 Redis \u7684\u6570\u636e\u4e0d […]","protected":false},"author":1,"featured_media":26892,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/26891"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=26891"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/26891\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/26892"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=26891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=26891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=26891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}