{"id":10020654,"date":"2025-02-11T17:28:31","date_gmt":"2025-02-11T09:28:31","guid":{"rendered":"https:\/\/itmax.cn\/?p=10020654"},"modified":"2025-02-11T17:28:31","modified_gmt":"2025-02-11T09:28:31","slug":"redis-%e6%8c%81%e4%b9%85%e5%8c%96%e5%8e%9f%e7%90%86%e5%88%86%e6%9e%90%e5%92%8c%e4%bd%bf%e7%94%a8%e5%bb%ba%e8%ae%ae","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10020654","title":{"rendered":"Redis \u6301\u4e45\u5316\u539f\u7406\u5206\u6790\u548c\u4f7f\u7528\u5efa\u8bae"},"content":{"rendered":"<blockquote><p>\u4f5c\u8005\uff1a\u6765\u81ea vivo \u4e92\u8054\u7f51\u5b58\u50a8\u56e2\u961f-\u00a0 Qiu Xu<\/p><\/blockquote>\n<p>\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e86 Redis \u63d0\u4f9b\u7684\u4e09\u5927\u6301\u4e45\u5316\u673a\u5236\uff0c\u5373 AOF \u65e5\u5fd7\u3001RDB \u5feb\u7167\u4ee5\u53ca\u6df7\u5408\u6301\u4e45\u5316\u673a\u5236\u3002<\/p>\n<h2>\u4e00\u3001Redis \u4e3a\u4ec0\u4e48\u9700\u8981\u8fdb\u884c\u6301\u4e45\u5316<\/h2>\n<p>Redis \u4e3a\u4e86\u4fdd\u8bc1\u6027\u80fd\uff0c\u4f1a\u5c06\u6240\u6709\u6570\u636e\u5b58\u653e\u5728\u5185\u5b58\u4e2d\uff0c\u8fd9\u6781\u5927\u7684\u63d0\u9ad8\u4e86 Redis \u7684\u54cd\u5e94\u901f\u5ea6\uff0c\u4f46\u662f\u8fd9\u4e5f\u5f15\u5165\u4e86\u4e00\u4e2a\u5341\u5206\u4e25\u91cd\u7684\u95ee\u9898\uff1a\u4e00\u65e6\u670d\u52a1\u5668\u5b95\u673a\uff0c\u5185\u5b58\u4e2d\u7684\u6570\u636e\u5c06\u5168\u90e8\u4e22\u5931\u3002\u8fd9\u5bf9\u4e8e\u4e00\u6b3e\u6570\u636e\u5e93\u4ea7\u54c1\u6765\u8bf4\u662f\u4e0d\u80fd\u63a5\u53d7\u7684\u3002\u8981\u907f\u514d\u6570\u636e\u4e22\u5931\uff0c\u6700\u597d\u5c06\u5185\u5b58\u6570\u636e\u6301\u4e45\u5316\u5230\u78c1\u76d8\u7b49\u6c38\u4e45\u5b58\u50a8\u4ecb\u8d28\u4e0a\u3002\u670d\u52a1\u91cd\u542f\u65f6\uff0c\u5148\u52a0\u8f7d\u78c1\u76d8\u6587\u4ef6\u5185\u7684\u6570\u636e\u5230\u5185\u5b58\uff0c\u5b8c\u6210\u6570\u636e\u6062\u590d\u3002\u76ee\u524d\uff0cRedis \u4e3b\u8981\u63d0\u4f9b\u4e86\u4e09\u5927\u6301\u4e45\u5316\u673a\u5236\uff0c\u5373 AOF\uff08Append Only File\uff09\u65e5\u5fd7\u3001RDB \u5feb\u7167\u3001AOF \u4e0e RDB \u76f8\u7ed3\u5408\u7684\u6df7\u5408\u6301\u4e45\u5316\u3002<\/p>\n<h2>\u4e8c\u3001AOF<\/h2>\n<h3>2.1\u00a0\u00a0AOF \u6982\u8ff0<\/h3>\n<p>AOF \u5168\u79f0\u4e3a Append Only File\uff0c\u5373\u5b9e\u65f6\u5c06\u6bcf\u4e00\u6761\u5199\u547d\u4ee4\u8bb0\u5f55\u5230 AOF \u6587\u4ef6\u4e2d\uff0c\u5f53 Redis \u670d\u52a1\u91cd\u542f\u65f6\u4f1a\u987a\u5e8f\u6267\u884c\u4e00\u904d AOF \u6587\u4ef6\u4e2d\u7684\u6240\u6709\u547d\u4ee4\uff0c\u4ee5\u8fbe\u5230\u6570\u636e\u6062\u590d\u7684\u76ee\u7684\u3002\u6211\u4eec\u5e38\u89c1\u7684\u65e5\u5fd7\u8bb0\u5f55\u65b9\u5f0f\u4e3b\u8981\u4e3a\u4e24\u79cd\uff0c\u4e00\u79cd\u4e3a\u5199\u524d\u65e5\u5fd7\uff08Write Ahead Log, WAL\uff09\uff0c\u4ee5 Mysql \u6570\u636e\u5e93\u4e3a\u4f8b\uff0cMysql \u5728\u5c06\u6570\u636e\u5199\u5165\u78c1\u76d8\u524d\uff0c\u4f1a\u5148\u628a\u4fee\u6539\u7684\u6570\u636e\u8bb0\u5230 redo \u548c bin log \u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u4ee5\u4fbf\u6545\u969c\u65f6\u8fdb\u884c\u6062\u590d\u3002<\/p>\n<p>\u800c\u53e6\u4e00\u79cd\u5219\u662f Redis AOF \u65e5\u5fd7\u6240\u91c7\u7528\u7684\u5199\u540e\u65e5\u5fd7\uff0c\u201c\u5199\u540e\u201d\u7684\u610f\u601d\u662f Redis \u4f1a\u5148\u6267\u884c\u6240\u63a5\u6536\u5230\u7684\u5199\u547d\u4ee4\uff0c\u628a\u6570\u636e\u5199\u5165\u5185\u5b58\uff0c\u7136\u540e\u624d\u5c06\u547d\u4ee4\u5199\u5165 AOF \u65e5\u5fd7\u6587\u4ef6\u3002Redis \u5728\u5c06\u547d\u4ee4\u8bb0\u5f55\u5230 AOF \u65e5\u5fd7\u4e2d\u7684\u65f6\u5019\uff0c\u5e76\u4e0d\u4f1a\u53bb\u68c0\u9a8c\u547d\u4ee4\u8bed\u6cd5\u7684\u6b63\u786e\u6027\u3002\u56e0\u6b64\u5148\u6267\u884c\u547d\u4ee4\uff0c\u5229\u7528\u547d\u4ee4\u6267\u884c\u8fd9\u4e00\u73af\u8282\u5bf9\u8fd9\u4e9b\u547d\u4ee4\u8fdb\u884c\u8bed\u6cd5\u6821\u9a8c\uff0c\u8fd9\u6837\u65e2\u907f\u514d\u4e86\u5199\u65e5\u5fd7\u65f6\u989d\u5916\u7684\u68c0\u67e5\u5f00\u9500\uff0c\u4e5f\u4e0d\u4f1a\u5c06\u5b58\u5728\u8bed\u6cd5\u9519\u8bef\u7684\u547d\u4ee4\u8bb0\u5f55\u5230 AOF \u65e5\u5fd7\u4e2d\uff0c\u4fdd\u8bc1\u4e86 Redis \u5728\u4f7f\u7528 AOF \u65e5\u5fd7\u6062\u590d\u6570\u636e\u65f6\u7684\u6b63\u786e\u6027\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100346\" alt=\"\" title=\"\"><\/p>\n<h3>2.2\u00a0AOF \u5f00\u542f\u65b9\u5f0f<\/h3>\n<p>\u7531\u4e8e AOF \u529f\u80fd\u5f00\u542f\u540e\u5bf9 Redis \u6027\u80fd\u4f1a\u4ea7\u751f\u4e00\u5b9a\u5f71\u54cd\uff0c\u56e0\u6b64 AOF \u529f\u80fd\u9ed8\u8ba4\u662f\u5173\u95ed\u7684\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539 redis.conf \u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u914d\u7f6e\u53c2\u6570\u6765\u5f00\u542f AOF \u529f\u80fd\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u201cconfig set\u201d\u547d\u4ee4\u5728\u7ebf\u52a8\u6001\u7684\u5f00\u542f\u548c\u5173\u95ed AOF \u529f\u80fd\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100347\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h3>2.3 AOF \u914d\u7f6e\u9879<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 redis.conf \u914d\u7f6e\u6587\u4ef6\u4e2d\u4e0e AOF \u76f8\u5173\u7684\u914d\u7f6e\u9879\u6765\u81ea\u5b9a\u4e49\u76f8\u5e94\u7684 AOF \u529f\u80fd\uff0c\u4f8b\u5982\uff1a\u00a0<\/p>\n<blockquote>\n<ul>\n<li>\u53ef\u4ee5\u901a\u8fc7 appendfilename\u3001appenddirname \u914d\u7f6e\u9879\u6765\u6307\u5b9a AOF \u6587\u4ef6\u540d\u4ee5\u53ca\u6587\u4ef6\u5b58\u653e\u76ee\u5f55\u3002<\/li>\n<li>\u53ef\u4ee5\u901a\u8fc7 appendfsync \u914d\u7f6e\u9879\u6765\u6307\u5b9a AOF \u5237\u76d8\u7b56\u7565\uff0c\u5176\u4e2d\u4e0d\u540c\u7684\u914d\u7f6e\u9879\u503c\u5728\u6570\u636e\u5b89\u5168\u6027\u4ee5\u53ca\u670d\u52a1\u6027\u80fd\u65b9\u9762\u7684\u8868\u73b0\u90fd\u4e0d\u76f8\u540c\u3002<\/li>\n<li>\u914d\u7f6e\u9879 no-appendfsync-on-rewrite \u8868\u793a\u662f\u5426\u5728 AOF \u91cd\u5199\u6216\u5199 RDB \u671f\u95f4\uff0c\u8fdb\u884c AOF \u5237\u76d8\u3002\u5728 AOF \u91cd\u5199\u548c\u5199 RDB \u6587\u4ef6\u671f\u95f4\u4f1a\u4ea7\u751f\u5927\u91cf\u7684\u78c1\u76d8 IO \u8bfb\u5199\u64cd\u4f5c\uff0c\u5982\u679c\u914d\u7f6e\u4e3a no\uff0c\u5219\u8868\u793a\u5728\u6b64\u671f\u95f4\u53ef\u4ee5\u8fdb\u884c\u5237\u76d8\u64cd\u4f5c\uff0c\u6b64\u65f6\u5982\u679c\u9700\u8981\u540c\u6b65\u7684\u6570\u636e\u91cf\u975e\u5e38\u5927\u53ef\u80fd\u4f1a\u963b\u585e Redis \u4e3b\u7ebf\u7a0b\uff0c\u964d\u4f4e Redis \u670d\u52a1\u6027\u80fd\u3002\u56e0\u6b64\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u5982\u679c\u5b58\u5728\u5927\u91cf\u5e76\u53d1\u7684\u5199\u64cd\u4f5c\u5219\u53ef\u5c06\u8be5\u503c\u8bbe\u7f6e\u4e3a yes\uff1b\u5982\u679c\u4e3a\u5927\u91cf\u5e76\u53d1\u7684\u8bfb\u64cd\u4f5c\u5219\u53ef\u4ee5\u8bbe\u7f6e\u4e3a no\u3002<\/li>\n<li>\u53ef\u4ee5\u901a\u8fc7 auto-aof-rewrite-percentage\u3001auto-aof-rewrite-min-size \u914d\u7f6e\u9879\u6765\u6307\u5b9a\u89e6\u53d1 AOF \u91cd\u5199\u7684\u6761\u4ef6\uff0c\u4ee5\u9632\u6b62 AOF \u6587\u4ef6\u8fc7\u5ea6\u81a8\u80c0\uff0c\u5360\u7528\u5927\u91cf\u5b58\u50a8\u7a7a\u95f4\u3002<\/li>\n<li>\u5728\u8fdb\u884c AOF \u6301\u4e45\u5316\u671f\u95f4\uff0c\u53ef\u80fd\u7531\u4e8e Redis \u670d\u52a1\u7a81\u7136\u5b95\u673a\u7b49\u539f\u56e0\u5bfc\u81f4\u5199\u5165 AOF \u6587\u4ef6\u7684\u6700\u540e\u4e00\u6761\u547d\u4ee4\u4e0d\u5b8c\u6574\u3002\u5728 Redis \u670d\u52a1\u91cd\u542f\u5e76\u52a0\u8f7d AOF \u6587\u4ef6\u65f6\uff0c\u914d\u7f6e\u9879 aof-load-truncated \u7684\u503c\u51b3\u5b9a\u4e86 Redis \u670d\u52a1\u80fd\u5426\u91cd\u542f\u6210\u529f\u3002\u82e5\u503c\u4e3a yes\uff0c\u5219\u5220\u9664\u4e0d\u5b8c\u6574\u7684\u547d\u4ee4\uff0cRedis \u670d\u52a1\u6b63\u5e38\u542f\u52a8\uff1b\u82e5\u503c\u4e3a no\uff0c\u5219 Redis \u670d\u52a1\u65e0\u6cd5\u542f\u52a8\u3002<\/li>\n<li>\u53ef\u4ee5\u901a\u8fc7 aof-use-rdb-preamble \u914d\u7f6e\u9879\u6765\u6307\u5b9a\u662f\u5426\u5f00\u542f\u6df7\u5408\u6301\u4e45\u5316\u529f\u80fd\u3002<\/li>\n<\/ul>\n<\/blockquote>\n<h3>2.4 AOF \u6587\u4ef6\u5185\u5bb9<\/h3>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u65b9\u5f0f\u5f00\u542f AOF \u529f\u80fd\u540e\uff0c\u6211\u4eec\u4ee5\u4e00\u6761 \u201cset testkey testvalue\u201d \u547d\u4ee4\u6765\u770b\u4e00\u4e0b\u547d\u4ee4\u662f\u4ee5\u600e\u6837\u7684\u683c\u5f0f\u5b58\u50a8\u5728 AOF \u6587\u4ef6\u4e2d\u7684\u3002\u5982\u56fe\u6240\u793a\u5176\u4e2d\uff0c\u201c*3\u201d \u8868\u793a\u5f53\u524d\u547d\u4ee4\u6709\u4e09\u4e2a\u90e8\u5206\uff0c\u6bcf\u90e8\u5206\u90fd\u662f\u7531 \u201c$+\u6570\u5b57\u201d \u5f00\u5934\uff0c\u540e\u9762\u7d27\u8ddf\u7740\u5177\u4f53\u7684\u547d\u4ee4\u3001\u952e\u6216\u503c\u3002\u8fd9\u91cc\uff0c\u201c\u6570\u5b57\u201d\u8868\u793a\u8fd9\u90e8\u5206\u4e2d\u7684\u547d\u4ee4\u3001\u952e\u6216\u503c\u4e00\u5171\u6709\u591a\u5c11\u5b57\u8282\u3002\u4f8b\u5982\uff0c\u201c$3\u201d \u8868\u793a\u8fd9\u90e8\u5206\u6570\u636e\u6709 3 \u4e2a\u5b57\u8282\uff0c\u4e5f\u5c31\u662f \u201cset\u201d \u547d\u4ee4\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100348\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h3>2.5 \u5199\u56de\u7b56\u7565<\/h3>\n<p>Redis \u662f\u5148\u6267\u884c\u5199\u64cd\u4f5c\u547d\u4ee4\uff0c\u7136\u540e\u5c06\u8be5\u547d\u4ee4\u8bb0\u5f55\u5230 AOF \u7f13\u51b2\u533a\u4e2d\uff0c\u6700\u540e\u518d\u5c06\u7f13\u51b2\u533a\u4e2d\u7684\u6570\u636e\u5199\u5165\u78c1\u76d8\u3002\u8fd9\u4e48\u505a\u907f\u514d\u4e86\u989d\u5916\u7684\u68c0\u67e5\u5f00\u9500\uff0c\u4e0d\u4f1a\u963b\u585e\u5f53\u524d\u5199\u64cd\u4f5c\u547d\u4ee4\u7684\u6267\u884c\u3002AOF \u914d\u7f6e\u9879 appendfsync \u7684\u53c2\u6570\u503c\uff0c\u4e3a AOF \u65e5\u5fd7\u5199\u56de\u78c1\u76d8\u7684\u65f6\u673a\u63d0\u4f9b\u4e86\u4e09\u4e2a\u9009\u62e9\u3002<\/p>\n<blockquote>\n<ul>\n<li>Always\uff0c\u540c\u6b65\u5199\u56de\uff1a\u6bcf\u4e2a\u5199\u547d\u4ee4\u6267\u884c\u5b8c\uff0c\u7acb\u9a6c\u5c06\u65e5\u5fd7\u5199\u56de\u78c1\u76d8\uff1b\u201c\u540c\u6b65\u5199\u56de\u201d\u53ef\u4ee5\u505a\u5230\u57fa\u672c\u4e0d\u4e22\u6570\u636e\uff0c\u4f46\u662f\u5728\u6bcf\u4e00\u4e2a\u5199\u547d\u4ee4\u6267\u884c\u540e\u90fd\u4f1a\u6709\u4e00\u4e2a\u5bf9\u78c1\u76d8\u7684\u5199\u64cd\u4f5c\uff0c\u8fd9\u4e0d\u53ef\u907f\u514d\u5730\u4f1a\u5f71\u54cd\u4e3b\u7ebf\u7a0b\u6027\u80fd\u3002<\/li>\n<li>Everysec\uff0c\u6bcf\u79d2\u5199\u56de\uff1a\u6bcf\u4e2a\u5199\u547d\u4ee4\u6267\u884c\u5b8c\uff0c\u53ea\u662f\u5148\u628a\u65e5\u5fd7\u5199\u5230 AOF \u6587\u4ef6\u7684\u5185\u5b58\u7f13\u51b2\u533a\uff0c\u6bcf\u9694\u4e00\u79d2\u628a\u7f13\u51b2\u533a\u4e2d\u7684\u5185\u5bb9\u5199\u5165\u78c1\u76d8\uff1b\u201c\u6bcf\u79d2\u5199\u56de\u201d\u91c7\u7528\u4e00\u79d2\u5199\u56de\u4e00\u6b21\u7684\u9891\u7387\uff0c\u907f\u514d\u4e86\u201c\u540c\u6b65\u5199\u56de\u201d\u7684\u6027\u80fd\u5f00\u9500\uff0c\u51cf\u5c11\u4e86\u5bf9 Redis \u6027\u80fd\u7684\u5f71\u54cd\uff0c\u4f46\u662f\u5982\u679c\u53d1\u751f\u5b95\u673a\uff0c\u5c06\u4e22\u5931\u4e00\u79d2\u5185\u7684\u6240\u6709\u5199\u64cd\u4f5c\u3002<\/li>\n<li>No\uff0c\u64cd\u4f5c\u7cfb\u7edf\u63a7\u5236\u7684\u5199\u56de\uff1a\u6bcf\u4e2a\u5199\u547d\u4ee4\u6267\u884c\u5b8c\uff0c\u53ea\u662f\u5148\u628a\u65e5\u5fd7\u5199\u5230 AOF \u6587\u4ef6\u7684\u5185\u5b58\u7f13\u51b2\u533a\uff0c\u7531\u64cd\u4f5c\u7cfb\u7edf\u51b3\u5b9a\u4f55\u65f6\u5c06\u7f13\u51b2\u533a\u5185\u5bb9\u5199\u56de\u78c1\u76d8\u3002\u7531\u4e8e Redis \u5df2\u4e0d\u518d\u638c\u63e1\u843d\u76d8\u7684\u65f6\u673a\uff0c\u56e0\u6b64\u4e00\u65e6\u5b95\u673a\u6ca1\u6709\u5199\u5165 AOF \u6587\u4ef6\u7684\u6570\u636e\u5c31\u4e22\u5931\u4e86\u3002<\/li>\n<\/ul>\n<\/blockquote>\n<p>\u5199\u56de\u7b56\u7565\u5bf9\u6bd4\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100349\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h3>2.6 AOF \u91cd\u5199<\/h3>\n<p>\u5728\u4e0a\u9762\u6211\u4eec\u5411 AOF \u6587\u4ef6\u4e2d\u8bb0\u5f55\u4e86\u4e00\u6761 set \u547d\u4ee4\uff0c\u5982\u679c\u6b64\u65f6\u6211\u4eec\u5bf9\u8be5 key \u7684\u503c\u8fdb\u884c\u4e86\u66f4\u65b0\uff0c\u90a3\u4e48 AOF \u6587\u4ef6\u4e2d\u8bb0\u5f55\u7684\u65e5\u5fd7\u662f\u5426\u4e5f\u4f1a\u968f\u4e4b\u66f4\u65b0\u5462\uff1f\u901a\u8fc7 AOF \u6587\u4ef6\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u539f\u5148\u5199\u5165 AOF \u6587\u4ef6\u7684 set \u547d\u4ee4\u5e76\u6ca1\u6709\u53d1\u751f\u6539\u53d8\uff0c\u800c\u662f\u5728 AOF \u6587\u4ef6\u672b\u5c3e\u8ffd\u52a0\u4e86\u4e00\u6761 set testkey value \u547d\u4ee4\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100350\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u7531\u4e8e AOF \u65e5\u5fd7\u6587\u4ef6\u4e2d\u8bb0\u5f55\u7684\u662f\u81ea Redis \u542f\u52a8\u540e\u6bcf\u4e00\u6761\u5199\u64cd\u4f5c\uff0c\u56e0\u6b64\u968f\u7740\u5199\u64cd\u4f5c\u7684\u4e0d\u65ad\u589e\u52a0\uff0cAOF \u6587\u4ef6\u5c06\u8d8a\u6765\u8d8a\u81a8\u80c0\uff0c\u4e3a\u4e86\u9632\u6b62 AOF \u6587\u4ef6\u4e0d\u65ad\u5730\u81a8\u80c0\uff0cRedis \u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u4e00\u79cd AOF \u6587\u4ef6\u7684\u91cd\u5199\u673a\u5236\u3002AOF \u6587\u4ef6\u5728\u91cd\u5199\u65f6\uff0cRedis \u4f1a\u6839\u636e\u6570\u636e\u5e93\u7684\u73b0\u72b6\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 AOF \u6587\u4ef6\uff0c\u5373\u8bfb\u53d6\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u952e\u503c\u5bf9\uff0c\u7136\u540e\u7528\u4e00\u6761\u547d\u4ee4\u5c06\u6bcf\u4e00\u4e2a\u952e\u503c\u5bf9\u8bb0\u5f55\u5230\u65b0\u7684 AOF \u6587\u4ef6\u4e2d\u3002\u6bd4\u5982\u8bf4\uff0c\u5f53\u8bfb\u53d6\u4e86\u952e\u503c\u5bf9 \u201ctestkey\u201d: \u201cvalue\u201d \u4e4b\u540e\uff0c\u91cd\u5199\u673a\u5236\u4f1a\u8bb0\u5f55 set testkey value \u8fd9\u6761\u547d\u4ee4\u3002<\/p>\n<p>\u8fd9\u6837\uff0c\u5f53\u9700\u8981\u6062\u590d\u65f6\uff0c\u53ef\u4ee5\u91cd\u65b0\u6267\u884c\u8be5\u547d\u4ee4\uff0c\u5b9e\u73b0 \u201ctestkey\u201d: \u201cvalue\u201d \u7684\u5199\u5165\uff0c\u800c\u5e76\u4e0d\u5173\u5fc3\u4e2d\u95f4\u5bf9\u8fd9\u4e2a key \u7684\u5176\u4ed6\u5199\u64cd\u4f5c\u3002\u4ee5\u4e0b\u56fe\u4e3a\u4f8b\uff0c\u5f53\u6211\u4eec\u5bf9\u4e00\u4e2a\u5217\u8868\u5148\u540e\u505a\u4e86 6 \u6b21\u4fee\u6539\u64cd\u4f5c\u540e\uff0c\u5217\u8868\u7684\u6700\u540e\u72b6\u6001\u662f [\u201cD\u201d, \u201cE\u201d, \u201cF\u201d]\uff0c\u6b64\u65f6\uff0c\u53ea\u7528 LPUSH mylist \u201cD\u201d, \u201cE\u201d, &#8220;F&#8221; \u8fd9\u4e00\u6761\u547d\u4ee4\u5c31\u80fd\u5b9e\u73b0\u8be5\u6570\u636e\u7684\u6062\u590d\uff0c\u8fd9\u5c31\u8282\u7701\u4e86\u4e94\u6761\u547d\u4ee4\u7684\u7a7a\u95f4\u3002\u8fd9\u6837\u5bf9\u4e8e\u88ab\u9891\u7e41\u4fee\u6539\u8fc7\u7684\u952e\u503c\u5bf9\u6765\u8bf4\uff0c\u91cd\u5199\u80fd\u8282\u7701\u5927\u91cf\u7684\u7a7a\u95f4\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100351\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u6ce8\uff1a\u56fe\u7247\u6765\u6e90\u4e8e <a href=\"https:\/\/link.segmentfault.com\/?enc=X5%2FYe97Mfz8xvIH6dK3FPg%3D%3D.GhirhDJwDUJw6dS5DITXBqyIgeCuvHz3QJokQBfaQ10%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/time.geekbang<\/a><\/p>\n<p>\u867d\u7136 AOF \u91cd\u5199\u540e\uff0c\u65e5\u5fd7\u6587\u4ef6\u4f1a\u7f29\u5c0f\uff0c\u4f46\u662f\uff0c\u8981\u628a\u6574\u4e2a\u6570\u636e\u5e93\u6700\u65b0\u6570\u636e\u7684\u64cd\u4f5c\u65e5\u5fd7\u90fd\u5199\u56de\u78c1\u76d8\uff0c\u4ecd\u7136\u662f\u4e00\u4e2a\u975e\u5e38\u8017\u65f6\u7684\u8fc7\u7a0b\u3002\u4e3a\u4e86\u907f\u514d\u963b\u585e\u4e3b\u7ebf\u7a0b\uff0c\u5bfc\u81f4\u6570\u636e\u5e93\u6027\u80fd\u4e0b\u964d\uff0c\u91cd\u5199\u8fc7\u7a0b\u662f\u7531 bgrewriteaof \u5b50\u8fdb\u7a0b\u6765\u5b8c\u6210\u3002\u6bcf\u6b21\u6267\u884c\u91cd\u5199\u65f6\uff0c\u4e3b\u7ebf\u7a0b fork \u51fa bgrewriteaof \u5b50\u8fdb\u7a0b\u3002\u7531\u5b50\u8fdb\u7a0b\u9010\u4e00\u628a\u5185\u5b58\u4e2d\u7684\u6570\u636e\u5199\u6210\u64cd\u4f5c\uff0c\u8bb0\u5165\u91cd\u5199\u65e5\u5fd7\u3002\u7531\u4e8e\u4e3b\u7ebf\u7a0b\u672a\u963b\u585e\uff0c\u4ecd\u7136\u53ef\u4ee5\u5904\u7406\u65b0\u6765\u7684\u64cd\u4f5c\u3002<\/p>\n<p>\u6b64\u65f6\uff0c\u5982\u679c\u6709\u5199\u64cd\u4f5c\uff0cRedis \u4f1a\u628a\u8fd9\u4e2a\u64cd\u4f5c\u5199\u5230 AOF \u65e5\u5fd7\u7f13\u51b2\u533a\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u5373\u4f7f\u5b95\u673a\u4e86\uff0c\u8fd9\u4e2a AOF \u65e5\u5fd7\u7684\u64cd\u4f5c\u4ecd\u7136\u662f\u9f50\u5168\u7684\uff0c\u53ef\u4ee5\u7528\u4e8e\u6062\u590d\u3002\u5e76\u4e14\u8fd9\u4e2a\u64cd\u4f5c\u4e5f\u4f1a\u88ab\u5199\u5230\u91cd\u5199\u65e5\u5fd7\u7684\u7f13\u51b2\u533a\u3002\u8fd9\u6837\uff0c\u91cd\u5199\u65e5\u5fd7\u4e5f\u4e0d\u4f1a\u4e22\u5931\u6700\u65b0\u7684\u64cd\u4f5c\u3002\u7b49\u5230\u5185\u5b58\u6570\u636e\u7684\u6240\u6709\u64cd\u4f5c\u8bb0\u5f55\u91cd\u5199\u5b8c\u6210\u540e\uff0c\u91cd\u5199\u65e5\u5fd7\u8bb0\u5f55\u7684\u8fd9\u4e9b\u6700\u65b0\u64cd\u4f5c\u4e5f\u4f1a\u5199\u5165\u65b0\u7684 AOF \u6587\u4ef6\uff0c\u4ee5\u4fdd\u8bc1\u6570\u636e\u5e93\u6700\u65b0\u72b6\u6001\u7684\u8bb0\u5f55\u3002\u6b64\u65f6\uff0c\u5c31\u53ef\u4ee5\u7528\u65b0\u7684 AOF \u6587\u4ef6\u66ff\u4ee3\u65e7\u6587\u4ef6\u4e86\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100352\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u6ce8\uff1a\u56fe\u7247\u6765\u6e90\u4e8e <a href=\"https:\/\/link.segmentfault.com\/?enc=2nOh9xgfZ%2BXJ8MQpEDnGxg%3D%3D.kRUMHqMebdv%2B76hb%2B%2B8ElmZRDJRaE6mZuhmiCFaP2Fg%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/time.geekbang<\/a><\/p>\n<p>\u89e6\u53d1 AOF \u540e\u53f0\u91cd\u5199\u7684\u6761\u4ef6<\/p>\n<ul>\n<li>AOF \u91cd\u5199\u53ef\u4ee5\u7531\u7528\u6237\u901a\u8fc7\u8c03\u7528 \/`BGREWRITEAOF\/` \u624b\u52a8\u89e6\u53d1\u3002<\/li>\n<li>\u6bcf\u6b21\u5f53 \/`serverCron\/`\uff08\u670d\u52a1\u5668\u5468\u671f\u6027\u64cd\u4f5c\u51fd\u6570\uff09\u51fd\u6570\u6267\u884c\u65f6\uff0c\u5b83\u4f1a\u68c0\u67e5\u4ee5\u4e0b\u6761\u4ef6\u662f\u5426\u5168\u90e8\u6ee1\u8db3\uff0c\u5982\u679c\u5168\u90e8\u6ee1\u8db3\u7684\u8bdd\uff0c\u5c31\u89e6\u53d1\u81ea\u52a8\u7684 AOF \u91cd\u5199\u64cd\u4f5c\uff1a<\/li>\n<\/ul>\n<blockquote>\n<p>\uff081\uff09\u6ca1\u6709 BGSAVE \u547d\u4ee4\uff08RDB \u6301\u4e45\u5316\uff09\/ AOF \u6301\u4e45\u5316\u5728\u6267\u884c\uff1b<\/p>\n<p>\uff082\uff09\u6ca1\u6709 BGREWRITEAOF \u5728\u8fdb\u884c\uff1b<\/p>\n<p>\uff083\uff09\u5f53\u524d AOF \u6587\u4ef6\u5927\u5c0f\u8981\u5927\u4e8e<\/p>\n<p>\u00a0\/`server.aof\/_rewrite\/_min_size\/`\uff08\u9ed8\u8ba4\u4e3a 1MB\uff09\uff0c\u6216\u8005\u5728 \/`redis.conf\/` \u914d\u7f6e\u4e86 \/`auto-aof-rewrite-min-size\/` \u5927\u5c0f\uff1b<\/p>\n<p>\uff084\uff09\u5f53\u524d AOF \u6587\u4ef6\u5927\u5c0f\u548c\u6700\u540e\u4e00\u6b21\u91cd\u5199\u540e\u7684\u5927\u5c0f\u4e4b\u95f4\u7684\u6bd4\u7387\u5927\u4e8e\u6216\u8005\u7b49\u4e8e\u6307\u5b9a\u7684\u589e\u957f\u767e\u5206\u6bd4\uff08\u5728\u914d\u7f6e\u6587\u4ef6\u8bbe\u7f6e\u4e86 \/`auto-aof-rewrite-percentage\/` \u53c2\u6570\uff0c\u4e0d\u8bbe\u7f6e\u9ed8\u8ba4\u4e3a 100%\uff09<\/p>\n<\/blockquote>\n<h3>2.7 AOF \u6301\u4e45\u5316\u8be6\u7ec6\u6d41\u7a0b<\/h3>\n<ul>\n<li>Redis \u5728\u63a5\u6536\u5230\u4e00\u6761\u5ba2\u6237\u7aef\u53d1\u9001\u8fc7\u6765\u7684\u5199\u547d\u4ee4\u540e\uff0c\u4f1a\u5148\u6267\u884c\u8be5\u5199\u547d\u4ee4\uff0c\u5f85\u547d\u4ee4\u6267\u884c\u6210\u529f\u540e\u5c06\u8be5\u547d\u4ee4\u6309\u7167 Redis \u901a\u4fe1\u534f\u8bae\u683c\u5f0f\u5199\u5165 AOF \u7f13\u51b2\u533a\u3002<\/li>\n<li>\u6839\u636e\u8bbe\u7f6e\u7684 AOF \u5199\u56de\u7b56\u7565\uff0c\u5f53\u6ee1\u8db3\u5199\u56de\u6761\u4ef6\u65f6\uff0c\u5c06 AOF \u7f13\u51b2\u533a\u4e2d\u7684\u6570\u636e\u5199\u5165\u78c1\u76d8 AOF \u6587\u4ef6\u4e2d\u3002<\/li>\n<li>\u5f53 AOF \u6587\u4ef6\u5927\u5c0f\u8fbe\u5230\u91cd\u5199\u6761\u4ef6\u540e\uff0c\u4e3b\u8fdb\u7a0b fork \u51fa bgrewriteaof \u5b50\u8fdb\u7a0b\uff0c\u7531\u5b50\u8fdb\u7a0b\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u91cd\u5199\u4e3a\u5199\u547d\u4ee4\u5199\u5165\u4e34\u65f6\u6587\u4ef6\u3002<\/li>\n<li>\u82e5\u91cd\u5199\u671f\u95f4\uff0c\u4e3b\u7ebf\u7a0b\u6267\u884c\u4e86\u65b0\u7684\u5199\u64cd\u4f5c\uff0c\u4e3b\u7ebf\u7a0b\u5728\u5c06\u8be5\u5199\u64cd\u4f5c\u8bb0\u5f55\u5230 AOF \u7f13\u51b2\u533a\u7684\u540c\u65f6\u4f1a\u5c06\u8be5\u5199\u64cd\u4f5c\u5199\u5165\u91cd\u5199\u7f13\u5b58\u533a\u3002<\/li>\n<li>\u5f85\u5b50\u8fdb\u7a0b\u5b8c\u6210\u5185\u5b58\u4e2d\u6570\u636e\u7684\u8bb0\u5f55\u540e\uff0c\u4f1a\u5c06\u91cd\u5199\u7f13\u5b58\u533a\u8bb0\u5f55\u7684\u6570\u636e\u4e00\u5e76\u5199\u5165\u4e34\u65f6\u6587\u4ef6\u3002<\/li>\n<li>\u6700\u540e\u5229\u7528\u4e34\u65f6\u6587\u4ef6\u66ff\u6362\u539f\u6765\u7684 AOF \u6587\u4ef6\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100353\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h3>2.8\u00a0AOF \u65e5\u5fd7\u4f18\u7f3a\u70b9<\/h3>\n<p>\u4f18\u70b9\uff1a<\/p>\n<blockquote>\n<p>\uff081\uff09AOF \u53ef\u4ee5\u66f4\u597d\u7684\u4fdd\u62a4\u6570\u636e\u4e0d\u4e22\u5931\uff0c\u4e00\u822c AOF \u4f1a\u6bcf\u9694 1 \u79d2\uff0c\u901a\u8fc7\u4e00\u4e2a\u540e\u53f0\u7ebf\u7a0b\u6267\u884c fsync \u64cd\u4f5c\uff0c\u6700\u591a\u4e22\u5931 1 \u79d2\u949f\u7684\u6570\u636e\u3002<\/p>\n<p>\uff082\uff09Redis \u63d0\u4f9b\u4e86 AOF \u6587\u4ef6\u7684\u91cd\u5199\u673a\u5236\uff0c\u56e0\u6b64 AOF \u65e5\u5fd7\u6587\u4ef6\u4e0d\u4f1a\u81a8\u80c0\u7684\u5f88\u5927\uff0c\u5e76\u4e14\u5728\u91cd\u5199\u671f\u95f4\u4e5f\u4e0d\u4f1a\u5f71\u54cd\u5ba2\u6237\u7aef\u7684\u8bfb\u5199\u3002<\/p>\n<p>\uff083\uff09AOF \u6587\u4ef6\u4e2d\u4fdd\u5b58\u7684\u662f\u6267\u884c\u7684\u6307\u4ee4\uff0c\u6240\u4ee5\u8fd9\u4e2a\u7279\u6027\u975e\u5e38\u9002\u5408\u505a\u707e\u96be\u6027\u7684\u8bef\u64cd\u4f5c\u7d27\u6025\u6062\u590d\u3002<\/p>\n<\/blockquote>\n<p>\u7f3a\u70b9\uff1a<\/p>\n<blockquote>\n<p>\uff081\uff09\u7531\u4e8e AOF \u6587\u4ef6\u4e2d\u8bb0\u5f55\u7684\u662f\u5199\u64cd\u4f5c\u7684\u547d\u4ee4\uff0c\u56e0\u6b64\u5bf9\u4e8e\u540c\u4e00\u4efd\u6570\u636e\u6765\u8bf4\uff0cAOF \u7684\u65e5\u5fd7\u6587\u4ef6\u901a\u5e38\u8981\u6bd4 RDB \u7684\u6570\u636e\u5feb\u7167\u6587\u4ef6\u8981\u5927\u3002<\/p>\n<p>\uff082\uff09AOF \u5f00\u542f\u4e4b\u540e\uff0cRedis \u670d\u52a1\u652f\u6301\u7684\u5199 QPS \u4f1a\u6bd4 RDB \u652f\u6301\u7684\u5199 QPS \u4f4e\u3002<\/p>\n<\/blockquote>\n<h2>\u4e09\u3001RDB<\/h2>\n<h3>3.1 RDB \u6982\u8ff0<\/h3>\n<p>RDB \u6301\u4e45\u5316\u662f\u6307\u5728\u6307\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u5185\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u96c6\u5feb\u7167\u5199\u5165\u78c1\u76d8\u3002\u6240\u8c13\u5185\u5b58\u5feb\u7167\uff0c\u5c31\u662f\u6307\u5185\u5b58\u4e2d\u7684\u6570\u636e\u5728\u67d0\u4e00\u4e2a\u65f6\u523b\u7684\u72b6\u6001\u8bb0\u5f55\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u5373\u4f7f\u5b95\u673a\uff0c\u5feb\u7167\u6587\u4ef6\u4e5f\u4e0d\u4f1a\u4e22\u5931\uff0c\u6570\u636e\u7684\u53ef\u9760\u6027\u4e5f\u5c31\u5f97\u5230\u4e86\u4fdd\u8bc1\u3002\u8fd9\u4e2a\u5feb\u7167\u6587\u4ef6\u5c31\u79f0\u4e3a RDB \u6587\u4ef6\uff0c\u5176\u4e2d\uff0cRDB \u5c31\u662f Redis DataBase \u7684\u7f29\u5199\u3002\u56e0\u4e3a RDB \u8bb0\u5f55\u7684\u662f\u67d0\u4e00\u65f6\u523b\u7684\u6570\u636e\uff0c\u5e76\u4e0d\u662f\u64cd\u4f5c\uff0c\u6240\u4ee5\uff0c\u5728\u505a\u6570\u636e\u6062\u590d\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u628a RDB \u6587\u4ef6\u8bfb\u5165\u5185\u5b58\uff0c\u5f88\u5feb\u5730\u5b8c\u6210\u6570\u636e\u6062\u590d\u3002<\/p>\n<h3>3.2 RDB \u89e6\u53d1\u65b9\u5f0f<\/h3>\n<h4>3.2.1\u00a0save \u89e6\u53d1\u65b9\u5f0f<\/h4>\n<p>save \u547d\u4ee4\u6267\u884c\u65f6\u5c06\u963b\u585e Redis \u670d\u52a1\u5668\uff0c\u5728\u6b64\u671f\u95f4 Redis \u4e0d\u80fd\u6267\u884c\u5176\u4ed6\u5ba2\u6237\u7aef\u7684\u547d\u4ee4\uff0c\u76f4\u5230 RDB \u8fc7\u7a0b\u5b8c\u6210\u4e3a\u6b62\u3002\u6267\u884c\u5b8c\u6210\u540e\uff0c\u7528\u65b0\u7684 RDB \u6587\u4ef6\u66ff\u4ee3\u6389\u65e7\u7684 RDB \u6587\u4ef6\u3002\u7531\u4e8e save \u547d\u4ee4\u4f1a\u963b\u585e Redis \u670d\u52a1\u5668\uff0c\u6781\u5927\u7684\u5f71\u54cd\u4e86 Redis \u7684\u6027\u80fd\uff0c\u56e0\u6b64\u4e0d\u63a8\u8350 save \u547d\u4ee4\u89e6\u53d1\u65b9\u5f0f\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100354\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h4>3.2.2 bgsave \u89e6\u53d1\u65b9\u5f0f<\/h4>\n<p>\u6267\u884c\u8be5\u547d\u4ee4\u65f6\uff0cRedis \u4f1a\u5728\u540e\u53f0\u5f02\u6b65\u5c06\u6570\u636e\u8bb0\u5f55\u5230 RDB \u6587\u4ef6\u4e2d\uff0c\u540c\u65f6 Redis \u8fd8\u53ef\u4ee5\u54cd\u5e94\u5ba2\u6237\u7aef\u8bf7\u6c42\u3002bgsave \u547d\u4ee4\u6267\u884c\u65f6 Redis \u4e3b\u8fdb\u7a0b\u5c06\u6267\u884c fork \u64cd\u4f5c\u521b\u5efa\u5b50\u8fdb\u7a0b\uff0cRDB \u6301\u4e45\u5316\u8fc7\u7a0b\u7531\u5b50\u8fdb\u7a0b\u8d1f\u8d23\uff0c\u5b8c\u6210\u540e\u7528\u65b0\u7684 RDB \u6587\u4ef6\u66ff\u6362\u6389\u65e7\u7684 RDB \u6587\u4ef6\u3002\u963b\u585e\u53ea\u53d1\u751f\u5728 fork \u9636\u6bb5\uff0c\u4e00\u822c\u65f6\u95f4\u5f88\u77ed\u3002\u57fa\u672c\u4e0a Redis \u5185\u90e8\u6240\u6709\u7684 RDB \u64cd\u4f5c\u90fd\u662f\u91c7\u7528 bgsave \u547d\u4ee4\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100355\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h4>3.2.3 \u81ea\u52a8\u89e6\u53d1<\/h4>\n<p>\u81ea\u52a8\u89e6\u53d1\u662f\u7531\u6211\u4eec\u7684\u914d\u7f6e\u6587\u4ef6\u6765\u5b8c\u6210\u7684\u3002\u5728 redis.conf \u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u91cc\u9762\u6709\u5982\u4e0b\u914d\u7f6e\uff1a<\/p>\n<p><strong>save<\/strong>\uff1a\u8fd9\u91cc\u662f\u7528\u6765\u914d\u7f6e\u89e6\u53d1 Redis \u7684 RDB \u6301\u4e45\u5316\u6761\u4ef6\uff0c\u4e5f\u5c31\u662f\u4ec0\u4e48\u65f6\u5019\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u4fdd\u5b58\u5230\u786c\u76d8\u3002\u6bd4\u5982 \u201csave m n\u201d\u3002\u8868\u793a m \u79d2\u5185\u6570\u636e\u96c6\u5b58\u5728 n \u6b21\u4fee\u6539\u65f6\uff0c<strong>\u81ea\u52a8\u89e6\u53d1 bgsave<\/strong>\u3002\u56e0\u6b64\u81ea\u52a8\u89e6\u53d1\u7684\u6574\u4f53\u6d41\u7a0b\u548c bgsave \u547d\u4ee4\u89e6\u53d1\u662f\u4e00\u81f4\u7684\u3002<\/p>\n<p><strong>RDB \u89e6\u53d1\u65b9\u5f0f\u5bf9\u6bd4<\/strong><\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100356\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h3>3.3 RDB \u914d\u7f6e\u9879<\/h3>\n<p>\u5728 redis.conf \u914d\u7f6e\u6587\u4ef6\u4e2d\u9664\u4e86\u7528\u4e8e\u5f00\u542f RDB \u529f\u80fd\u7684 save \u914d\u7f6e\u9879\u5916\uff0c\u8fd8\u6709\u5176\u4ed6\u7528\u4e8e\u81ea\u5b9a\u4e49 RDB \u529f\u80fd\u7684\u914d\u7f6e\u9879\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u5f00\u542f RDB \u529f\u80fd\u540e\uff0c\u53ef\u4ee5\u5c06\u914d\u7f6e\u9879 stop-writes-on-bgsave-error \u7684\u503c\u8bbe\u7f6e\u4e3a yes\uff0c\u5728 bgsave \u547d\u4ee4\u6267\u884c\u5931\u8d25\u540e\u963b\u6b62\u540e\u7eed\u7684\u5199\u547d\u4ee4\u6267\u884c\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u8ba9\u7528\u6237\u610f\u8bc6\u5230\u6570\u636e\u5e76\u6ca1\u6709\u88ab\u6210\u529f\u7684\u6301\u4e45\u5316\u5230\u78c1\u76d8\uff0c\u4ece\u800c\u907f\u514d\u6570\u636e\u4e22\u5931\u95ee\u9898\u3002<\/li>\n<li>\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u9879 rdbcompression \u6765\u542f\u7528 LZF \u5bf9 RDB \u6587\u4ef6\u8fdb\u884c\u538b\u7f29\uff0c\u867d\u7136\u538b\u7f29\u540e RDB \u6587\u4ef6\u5360\u7528\u7684\u5b58\u50a8\u7a7a\u95f4\u53d8\u5c0f\uff0c\u4f46\u662f\u538b\u7f29\u8fc7\u7a0b\u4f1a\u6d88\u8017\u7cfb\u7edf\u8d44\u6e90\uff0c\u964d\u4f4e Redis \u670d\u52a1\u6027\u80fd\u3002<\/li>\n<li>\u4ece RDB 5 \u5f00\u59cb\uff0cRDB \u6587\u4ef6\u5c06 CRC64 \u6821\u9a8c\u548c\u5199\u5165\u6587\u4ef6\u672b\u5c3e\uff0c\u4ee5\u4fdd\u8bc1 RDB \u6587\u4ef6\u7684\u6b63\u786e\u6027\uff0c\u4f46\u8fd9\u5728\u4fdd\u5b58\u548c\u52a0\u8f7d RDB \u6587\u4ef6\u65f6\uff0c\u5bf9\u6027\u80fd\u4f1a\u4ea7\u751f\u5f71\u54cd\u3002\u56e0\u6b64\u53ef\u4ee5\u901a\u8fc7\u5c06\u914d\u7f6e\u9879 rdbchecksum \u7684\u503c\u8bbe\u7f6e\u4e3a no\uff0c\u7981\u7528\u6821\u9a8c\u548c\u3002<\/li>\n<li>\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u9879 dbfilename \u548c dir \u6765\u6307\u5b9a RDB \u6587\u4ef6\u540d\u548c\u751f\u6210\u76ee\u5f55\u3002\u00a0<\/li>\n<\/ul>\n<h3>3.4 \u5199\u65f6\u590d\u5236\u6280\u672f<\/h3>\n<p>\u5f53\u7531 bgsave \u65b9\u5f0f\u89e6\u53d1 RDB \u6301\u4e45\u5316\u65f6\uff0cRedis \u5728\u5199 RDB \u671f\u95f4\u662f\u53ef\u4ee5\u6b63\u5e38\u5904\u7406\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u5199\u547d\u4ee4\u7684\u3002\u56e0\u6b64\u4e3a\u4e86\u8282\u7701\u5728 RDB \u6301\u4e45\u5316\u8fc7\u7a0b\u4e2d\u5185\u5b58\u7684\u4f7f\u7528\uff0cRedis \u4f1a\u501f\u52a9\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u5199\u65f6\u590d\u5236\u6280\u672f\uff08Copy-On-Write, COW\uff09\u3002\u7b80\u5355\u6765\u8bf4\uff0cbgsave \u5b50\u8fdb\u7a0b\u662f\u7531\u4e3b\u7ebf\u7a0b fork \u751f\u6210\u7684\uff0c\u53ef\u4ee5\u5171\u4eab\u4e3b\u7ebf\u7a0b\u7684\u6240\u6709\u5185\u5b58\u6570\u636e\u3002bgsave \u5b50\u8fdb\u7a0b\u8fd0\u884c\u540e\uff0c\u5f00\u59cb\u8bfb\u53d6\u4e3b\u7ebf\u7a0b\u7684\u5185\u5b58\u6570\u636e\uff0c\u5e76\u628a\u5b83\u4eec\u5199\u5165 RDB \u6587\u4ef6\u3002<\/p>\n<p>\u6b64\u65f6\uff0c\u5982\u679c\u4e3b\u7ebf\u7a0b\u5bf9\u8fd9\u4e9b\u6570\u636e\u4e5f\u90fd\u662f\u8bfb\u64cd\u4f5c\uff08\u4f8b\u5982\u56fe\u4e2d\u7684\u952e\u503c\u5bf9 A\uff09\uff0c\u90a3\u4e48\uff0c\u4e3b\u7ebf\u7a0b\u548c bgsave \u5b50\u8fdb\u7a0b\u76f8\u4e92\u4e0d\u5f71\u54cd\u3002\u4f46\u662f\uff0c\u5982\u679c\u4e3b\u7ebf\u7a0b\u8981\u4fee\u6539\u4e00\u5757\u6570\u636e\uff08\u4f8b\u5982\u56fe\u4e2d\u7684\u952e\u503c\u5bf9 C\uff09\uff0c\u90a3\u4e48\uff0c\u8fd9\u5757\u6570\u636e\u5c31\u4f1a\u88ab\u590d\u5236\u4e00\u4efd\uff0c\u751f\u6210\u8be5\u6570\u636e\u7684\u526f\u672c\uff08\u952e\u503c\u5bf9 C\u2019\uff09\u3002\u7136\u540e\uff0c\u4e3b\u7ebf\u7a0b\u5728\u8fd9\u4e2a\u6570\u636e\u526f\u672c\u4e0a\u8fdb\u884c\u4fee\u6539\u3002\u540c\u65f6\uff0cbgsave \u5b50\u8fdb\u7a0b\u53ef\u4ee5\u7ee7\u7eed\u628a\u539f\u6765\u7684\u6570\u636e\uff08\u952e\u503c\u5bf9 C\uff09\u5199\u5165 RDB \u6587\u4ef6\u3002\u8fd9\u65e2\u4fdd\u8bc1\u4e86\u5feb\u7167\u7684\u5b8c\u6574\u6027\uff0c\u4e5f\u5141\u8bb8\u4e3b\u7ebf\u7a0b\u540c\u65f6\u5bf9\u6570\u636e\u8fdb\u884c\u4fee\u6539\uff0c\u907f\u514d\u4e86\u5bf9\u6b63\u5e38\u4e1a\u52a1\u7684\u5f71\u54cd\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100357\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u6ce8\uff1a\u56fe\u7247\u6765\u6e90\u4e8e <a href=\"https:\/\/link.segmentfault.com\/?enc=3vHeqwEgjVoyoFoIzh1Oyg%3D%3D.DXdczIWPcCgtDUhwMdbWGs9YggMZgTjjZZ2l%2B6V95do%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/time.geekbang<\/a><\/p>\n<h3>3.5\u00a0RDB \u6587\u4ef6\u683c\u5f0f<\/h3>\n<p>\u00a0RDB \u6587\u4ef6\u7531\u4ee5\u4e0b\u4e94\u4e2a\u90e8\u5206\u7ec4\u6210\uff1b<\/p>\n<ol>\n<li>SOF \u4e3a\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684\u5b57\u7b26\u4e32\u5e38\u91cf REDIS\uff1b\u7528\u4e8e\u6807\u8bc6 RDB \u6587\u4ef6\u7684\u5f00\u59cb\uff0c\u5728\u52a0\u8f7d RDB \u6587\u4ef6\u65f6\u53ef\u4ee5\u5feb\u901f\u8bc6\u522b\u8be5\u6587\u4ef6\u662f\u5426\u4e3a RDB \u6587\u4ef6\u3002<\/li>\n<li>rdb_version \u5360 4 \u4e2a\u5b57\u8282\uff0c\u8868\u793a RDB \u6587\u4ef6\u7684\u7248\u672c\u53f7\u3002<\/li>\n<li>database \u662f RDB \u6587\u4ef6\u4e2d\u7684\u91cd\u8981\u90e8\u5206\uff0c\u5305\u542b\u4e86\u591a\u4e2a\u975e\u7a7a\u7684\u6570\u636e\u5e93\u3002\u6bcf\u4e2a database \u53c8\u7531 3 \u4e2a\u90e8\u5206\u7ec4\u6210\uff1aSODB \u5360\u4e00\u4e2a\u5b57\u8282\u8868\u660e\u6570\u636e\u5e93\u7684\u5f00\u59cb\uff0cdb_number \u8868\u793a\u6570\u636e\u5e93\u7684\u7f16\u53f7\uff0ckey-value-pairs \u8868\u793a\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u7684\u952e\u503c\u5bf9\u3002<\/li>\n<li>EOF \u5360\u4e00\u4e2a\u5b57\u8282\uff0c\u7528\u4e8e\u6807\u8bc6\u6570\u636e\u7684\u7ed3\u675f\uff0c\u6821\u9a8c\u548c\u7684\u5f00\u59cb\u3002<\/li>\n<li>check_sum \u6821\u9a8c\u548c\uff0c\u7528\u4e8e\u6821\u9a8c RDB \u6587\u4ef6\u6570\u636e\u662f\u5426\u51fa\u73b0\u635f\u574f\u3002<\/li>\n<\/ol>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100358\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h3>3.6\u00a0RDB \u5feb\u7167\u4f18\u7f3a\u70b9<\/h3>\n<p><strong>\u4f18\u70b9<\/strong>\uff1a<\/p>\n<p>\uff081\uff09RDB \u4f1a\u751f\u6210\u591a\u4e2a\u6570\u636e\u6587\u4ef6\uff0c\u6bcf\u4e2a\u6570\u636e\u6587\u4ef6\u90fd\u4ee3\u8868\u4e86\u67d0\u4e00\u4e2a\u65f6\u523b\u4e2d Redis \u7684\u6570\u636e\uff0c\u8fd9\u79cd\u591a\u4e2a\u6570\u636e\u6587\u4ef6\u7684\u65b9\u5f0f\uff0c\u975e\u5e38\u9002\u5408\u505a\u51b7\u5907\u3002<\/p>\n<p>\uff082\uff09\u7531\u4e8e Redis \u662f\u901a\u8fc7\u5b50\u8fdb\u7a0b\u6267\u884c\u78c1\u76d8 IO \u64cd\u4f5c\u6765\u8bb0\u5f55 RDB \u6587\u4ef6\u7684\uff0c\u56e0\u6b64 RDB \u673a\u5236\u5bf9 Redis \u7684\u6027\u80fd\u5f71\u54cd\u975e\u5e38\u5c0f\uff0c\u963b\u585e\u53ea\u53d1\u751f\u5728 fork \u9636\u6bb5\uff0c\u53ef\u4ee5\u4fdd\u6301 Redis \u7684\u9ad8\u6027\u80fd\u3002<\/p>\n<p>\uff083\uff09\u76f8\u5bf9\u4e8e AOF \u6301\u4e45\u5316\u673a\u5236\u6765\u8bf4\uff0c\u76f4\u63a5\u57fa\u4e8e RDB \u6570\u636e\u6587\u4ef6\u6765\u91cd\u542f\u548c\u6062\u590d Redis \u8fdb\u7a0b\uff0c\u66f4\u52a0\u7684\u5feb\u901f\u3002<\/p>\n<p><strong>\u7f3a\u70b9<\/strong>\uff1a<\/p>\n<p>\uff081\uff09\u7531\u4e8e RDB \u6587\u4ef6\u8bb0\u5f55\u7684\u662f\u67d0\u4e2a\u65f6\u95f4\u6bb5\u5185\u7684\u6570\u636e\u96c6\uff0c\u56e0\u6b64\u5f53\u670d\u52a1\u5668\u53d1\u751f\u5b95\u673a\u65f6\uff0c\u8be5\u65f6\u95f4\u6bb5\u540e\u7684\u6570\u636e\u5c06\u4e22\u5931\u3002<\/p>\n<p>\uff082\uff09\u4e3b\u8fdb\u7a0b\u6bcf\u6b21\u5728 fork \u5b50\u8fdb\u7a0b\u6765\u8bb0\u5f55\u6570\u636e\u65f6\uff0c\u5982\u679c\u6570\u636e\u6587\u4ef6\u7279\u522b\u5927\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e3b\u8fdb\u7a0b\u963b\u585e\u6570\u6beb\u79d2\uff0c\u6216\u8005\u751a\u81f3\u6570\u79d2\u3002<\/p>\n<h2>\u56db\u3001\u6df7\u5408\u6301\u4e45\u5316\u65b9\u5f0f<\/h2>\n<p>\u7531\u4e8e RDB \u6587\u4ef6\u8bb0\u5f55\u7684\u662f\u67d0\u4e2a\u65f6\u95f4\u6bb5\u5185\u7684\u6570\u636e\u96c6\uff0c\u56e0\u6b64\u4e24\u6b21 RDB \u671f\u95f4\u7684\u6570\u636e\u4f9d\u7136\u5b58\u5728\u4e22\u5931\u7684\u98ce\u9669\uff0c\u4f46\u662f\u5236\u4f5c RDB \u6587\u4ef6\u7684\u9891\u7387\u592a\u9ad8\u53c8\u4f1a\u5bf9 Redis \u6027\u80fd\u5e26\u6765\u5f71\u54cd\u3002\u56e0\u6b64\u4e3a\u4e86\u907f\u514d\u4e24\u6b21 RDB \u671f\u95f4\u6570\u636e\u7684\u4e22\u5931\uff0c\u5e76\u4e14\u964d\u4f4e\u5bf9\u6027\u80fd\u6240\u5e26\u6765\u7684\u5f71\u54cd\uff0c Redis 4.0 \u63d0\u51fa\u4e86\u4e00\u4e2a\u6df7\u5408\u4f7f\u7528 AOF \u65e5\u5fd7\u548c\u5185\u5b58\u5feb\u7167\u7684\u65b9\u6cd5\u3002\u53ef\u4ee5\u901a\u8fc7 redis.conf \u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u914d\u7f6e\u9879 aof-use-rdb-preamble \u6765\u5f00\u542f\u6df7\u5408\u6301\u4e45\u5316\u529f\u80fd\u3002<\/p>\n<p>\u5229\u7528 AOF \u65e5\u5fd7\u8bb0\u5f55\u4e24\u6b21\u5feb\u7167\u95f4\u7684\u64cd\u4f5c\uff0c\u56e0\u6b64\uff0c AOF \u6587\u4ef6\u4e5f\u4e0d\u4f1a\u592a\u5927\uff0c\u4e5f\u53ef\u4ee5\u907f\u514d\u91cd\u5199\u5f00\u9500\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0cT1 \u548c T2 \u65f6\u523b\u7684\u4fee\u6539\uff0c\u7528 AOF \u65e5\u5fd7\u8bb0\u5f55\uff0c\u7b49\u5230\u7b2c\u4e8c\u6b21\u505a\u5168\u91cf\u5feb\u7167\u65f6\uff0c\u5c31\u53ef\u4ee5\u6e05\u7a7a AOF \u65e5\u5fd7\uff0c\u56e0\u4e3a\u6b64\u65f6\u7684\u4fee\u6539\u90fd\u5df2\u7ecf\u8bb0\u5f55\u5230\u5feb\u7167\u4e2d\u4e86\uff0c\u6062\u590d\u65f6\u5c31\u4e0d\u518d\u7528\u65e5\u5fd7\u4e86\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000046100359\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u6ce8\uff1a\u56fe\u7247\u6765\u6e90\u4e8e <a href=\"https:\/\/link.segmentfault.com\/?enc=n4tDH2dSpnnUJ6JhFWsDrQ%3D%3D.ATuovAE0thoc%2BvSrxjyh8F%2FtkQD3KmfIbUDmZKYk17Y%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/time.geekbang<\/a><\/p>\n<h2>\u4e94\u3001\u6301\u4e45\u5316\u65b9\u6848\u9009\u62e9<\/h2>\n<p>\u00a0Redis \u5b98\u65b9\u63a8\u8350\u4f7f\u7528\u6df7\u5408\u6301\u4e45\u5316\u65b9\u6848\uff0c\u4f46\u6211\u4eec\u4e5f\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u4e1a\u52a1\u9700\u6c42\u548c\u573a\u666f\u5e76\u7ed3\u5408\u4e09\u79cd\u6301\u4e45\u5316\u65b9\u6848\u7684\u4f18\u7f3a\u70b9\u9009\u62e9\u5408\u9002\u7684\u6301\u4e45\u5316\u65b9\u6848\u3002<\/p>\n<ol>\n<li>\u5982\u679c\u5bf9\u6570\u636e\u5b89\u5168\u6027\u6709\u8f83\u9ad8\u7684\u8981\u6c42\uff0c\u5c31\u53ef\u4ee5\u9009\u62e9 AOF \u6216 \u6df7\u5408\u6301\u4e45\u5316\u65b9\u6848\uff0c\u5176\u4e2d AOF \u6301\u4e45\u5316\u65b9\u6848\u53ef\u901a\u8fc7\u9009\u62e9\u4e0d\u540c\u7684\u5199\u56de\u7b56\u7565\u6765\u8fbe\u5230\u4e0d\u540c\u7a0b\u5ea6\u7684\u6570\u636e\u5b89\u5168\u6027\u4fdd\u8bc1\u3002<\/li>\n<li>\u5982\u679c\u5e0c\u671b\u6570\u636e\u5feb\u901f\u6062\u590d\uff0c\u51cf\u5c11\u6545\u969c\u6062\u590d\u65f6\u95f4\uff0c\u53ef\u4ee5\u9009\u62e9 RDB \u6216\u6df7\u5408\u6301\u4e45\u5316\u65b9\u6848\u3002<\/li>\n<li>\u5982\u679c\u5bf9\u6301\u4e45\u5316\u6587\u4ef6\u5927\u5c0f\u6709\u8981\u6c42\uff0c\u53ef\u4ee5\u9009\u62e9 RDB \u6301\u4e45\u5316\u65b9\u6848\uff0c\u5e76\u53ef\u4ee5\u542f\u7528 LZF \u5bf9 RDB \u6587\u4ef6\u8fdb\u884c\u538b\u7f29\u3002<\/li>\n<li>\u5982\u679c\u5bf9 Redis \u670d\u52a1\u6027\u80fd\u6709\u8f83\u9ad8\u7684\u8981\u6c42\uff0c\u53ef\u4ee5\u9009\u62e9 RDB \u6216\u6df7\u5408\u6301\u4e45\u5316\u65b9\u6848\u3002<\/li>\n<li>\u82e5 Redis \u4ec5\u7528\u4e8e\u7f13\u5b58\uff0c\u53ef\u4e0d\u5f00\u542f\u6301\u4e45\u5316\u529f\u80fd\u4ee5\u8ffd\u6c42\u6700\u5927\u7684\u670d\u52a1\u6027\u80fd\u3002\u00a0<\/li>\n<\/ol>\n<h2>\u516d\u3001\u53c2\u8003\u8d44\u6599<\/h2>\n<ul>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=Ny3cwMU1ScL%2B%2FLwkbOkAHA%3D%3D.3YQ46WRewSafSJa8XVwRQq4ZbJCxGjH1xY2raRgVKL%2B74CxPn8C7p2yHZuVRj2%2FBzDyg%2BjtwAuGwpZP%2Bo16ap1KFhNyPrNRoBjO6kGl7%2FswtsEnqI5x069kTpGJw8lpqr0Obbz3OQwFsbEo6TgAI6w%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/www.tkcnn.com\/redis\/manual\/persistence.html<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=SJTSr2dLD0PFIhHTo05pGQ%3D%3D.FIgTlxyQI4kj9igZ8BnPa39p8OgE%2BsZFEr%2FvZIZXy3ssbfXALkOtvUe2msIn8sfpICYV7Lq%2Bp1VkFP0IumGuOrZkPkd34l9supRx%2F2hPEWUA0Iye1SfCFYK2C9p52crv\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/zhuanlan.zhihu.com\/p\/684331393<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=DqdmKikyvOc4CSkS3zoB9w%3D%3D.oYpU9dwJ%2BwBO0rKw6wr%2FrHSQ1dA3tjfWnebIoDXjoeWxEu6Q%2Bb2i62Cje4pslubWq6ecQ8%2FVDH9Y3fn%2BJQZ7D%2FesQ0zDH5s9KFa%2ButQe7rkMvwxZypdmVsQfijlyC%2BnEwPNRthvFo8W12PUkZK5zog%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/blog.csdn.net\/weixin_43412762\/article\/details\/134795648<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=EhzyucZxWO3MZJfaboiFYw%3D%3D.MIitL8l2GlWWZyyt211CVDwFZ7lSnOjRnkopIqVLA6zKLLdbGAOcdmvPs4UtAdJlPLivbn29yzrIguBh469UgLBhp2zI7tIYcYS5sipvG3FeKMjKJJW%2BZg2577wAY8Xcl0AuIu5JgQVYSlU6oIxGc8cX6VOU7uU2vTP0n%2FbbtvPeokl1A4hKbLGkKnbFR7ut\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">https:\/\/developer.aliyun.com\/article\/1419933?spm=5176.26934562.main.1.1732527dM6Snpw<\/a><\/li>\n<\/ul>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000046100344\">https:\/\/segmentfault.com\/a\/1190000046100344<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f5c\u8005\uff1a\u6765\u81ea vivo \u4e92\u8054\u7f51\u5b58\u50a8\u56e2\u961f-\u00a0 Qiu Xu \u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e86 Redis \u63d0\u4f9b\u7684\u4e09\u5927\u6301\u4e45\u5316\u673a\u5236\uff0c\u5373  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