{"id":339,"date":"2013-01-16T21:02:53","date_gmt":"2013-01-16T13:02:53","guid":{"rendered":"http:\/\/www.royalwzy.com\/?p=339"},"modified":"2014-04-11T14:16:29","modified_gmt":"2014-04-11T06:16:29","slug":"redis%e5%ad%a6%e4%b9%a007-%e6%8c%81%e4%b9%85%e5%8c%96","status":"publish","type":"post","link":"http:\/\/www.royalwzy.com\/?p=339","title":{"rendered":"Redis\u5b66\u4e6007–\u6301\u4e45\u5316"},"content":{"rendered":"
\n
Redis\u7684\u6570\u636e\u6301\u4e45\u5316<\/div>\n
\n
    \n
  1. redis\u662f\u4e00\u4e2a\u652f\u6301\u6301\u4e45\u5316\u7684\u5185\u5b58\u6570\u636e\u5e93,\u4e5f\u5c31\u662f\u8bf4redis\u9700\u8981\u7ecf\u5e38\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u540c\u6b65\u5230\u78c1\u76d8\u6765\u4fdd\u8bc1\u6301\u4e45\u5316,redis\u652f\u6301\u4e24\u79cd\u6301\u4e45\u5316\u65b9\u5f0f:\n
      \n
    1. Snapshotting(\u5feb\u7167)\u4e5f\u662f\u9ed8\u8ba4\u65b9\u5f0f;<\/li>\n
    2. Append-only file(\u7f29\u5199aof)\u7684\u65b9\u5f0f;<\/li>\n<\/ol>\n<\/li>\n
    3. Snapshotting:\n
        \n
      1. \u5feb\u7167\u662f\u9ed8\u8ba4\u7684\u6301\u4e45\u5316\u65b9\u5f0f,\u8fd9\u79cd\u65b9\u5f0f\u662f\u5c31\u662f\u5c06\u5185\u5b58\u4e2d\u6570\u636e\u4ee5\u5feb\u7167\u7684\u65b9\u5f0f\u5199\u5165\u5230\u4e8c\u8fdb\u5236\u6587\u4ef6\u4e2d,\u9ed8\u8ba4\u7684\u6587\u4ef6\u540d\u4e3adump.rdb;<\/li>\n
      2. \u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u8bbe\u7f6e\u81ea\u52a8\u505a\u5feb\u7167\u6301\u4e45\u5316\u7684\u65b9\u5f0f,\u6211\u4eec\u53ef\u4ee5\u914d\u7f6eredis\u5728n\u79d2\u5185\u5982\u679c\u8d85\u8fc7m\u4e2akey\u88ab\u4fee\u6539\u5c31\u81ea\u52a8\u505a\u5feb\u7167,\u4e0b\u9762\u662f\u9ed8\u8ba4\u7684\u5feb\u7167\u4fdd\u5b58\u914d\u7f6e:\n
          \n
        1. save 900 1\u00a0 #900s\u5185\u5982\u679c\u8d85\u8fc71\u4e2akey\u88ab\u4fee\u6539,\u5219\u53d1\u8d77\u5feb\u7167\u4fdd\u5b58;<\/li>\n
        2. save 300 10 #300s\u5185\u5982\u679c\u8d85\u8fc710\u4e2akey\u88ab\u4fee\u6539,\u5219\u53d1\u8d77\u5feb\u7167\u4fdd\u5b58;<\/li>\n
        3. save 60 10000 # 10s\u5185,\u5982\u679c\u8d85\u8fc710000\u4e2akey\u88ab\u4fee\u6539,\u5219\u53d1\u8d77\u5feb\u7167\u4fdd\u5b58;<\/li>\n<\/ol>\n<\/li>\n
        4. \u5feb\u7167\u4fdd\u5b58\u8fc7\u7a0b:\n
            \n
          1. redis\u8c03\u7528fork,\u73b0\u5728\u6709\u4e86\u5b50\u8fdb\u7a0b\u548c\u7236\u8fdb\u7a0b;<\/li>\n
          2. \u7236\u8fdb\u7a0b\u7ee7\u7eed\u5904\u7406client\u8bf7\u6c42,\u5b50\u8fdb\u7a0b\u8d1f\u8d23\u5c06\u5185\u5b58\u5185\u5bb9\u5199\u5165\u5230\u4e34\u65f6\u6587\u4ef6,\u7531\u4e8eos\u7684\u5199\u65f6\u590d\u5236\u673a\u5236(copy on write)\u7236\u5b50\u8fdb\u7a0b\u4f1a\u5171\u4eab\u76f8\u540c\u7684\u7269\u7406\u9875\u9762,\u5f53\u7236\u8fdb\u7a0b\u5904\u7406\u5199\u8bf7\u6c42\u65f6os\u4f1a\u4e3a\u7236\u8fdb\u7a0b\u8981\u4fee\u6539\u7684\u9875\u9762\u521b\u5efa\u526f\u672c,\u800c\u4e0d\u662f\u5199\u5171\u4eab\u7684\u9875\u9762,\u6240\u4ee5\u5b50\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u5185\u7684\u6570\u636e\u662ffork\u65f6\u523b\u6574\u4e2a\u6570\u636e\u5e93\u7684\u4e00\u4e2a\u5feb\u7167;<\/li>\n
          3. \u5f53\u5b50\u8fdb\u7a0b\u5c06\u5feb\u7167\u5199\u5165\u4e34\u65f6\u6587\u4ef6\u5b8c\u6bd5\u540e,\u7528\u4e34\u65f6\u6587\u4ef6\u66ff\u6362\u539f\u6765\u7684\u5feb\u7167\u6587\u4ef6,\u7136\u540e\u5b50\u8fdb\u7a0b\u9000\u51fa;<\/li>\n<\/ol>\n<\/li>\n
          4. \u5feb\u7167\u6301\u4e45\u5316\u7684\u6ce8\u610f\u4e8b\u9879:\n
              \n
            1. client\u4e5f\u53ef\u4ee5\u4f7f\u7528save\u6216\u8005bgsave\u547d\u4ee4\u901a\u77e5redis\u505a\u4e00\u6b21\u5feb\u7167\u6301\u4e45\u5316,save\u64cd\u4f5c\u662f\u5728\u4e3b\u7ebf\u7a0b\u4e2d\u4fdd\u5b58\u5feb\u7167\u7684,\u7531\u4e8eredis\u662f\u7528\u4e00\u4e2a\u4e3b\u7ebf\u7a0b\u6765\u5904\u7406\u6240\u6709client\u7684\u8bf7\u6c42,\u8fd9\u79cd\u65b9\u5f0f\u4f1a\u963b\u585e\u6240\u6709client\u8bf7\u6c42,\u6240\u4ee5\u4e0d\u63a8\u8350\u4f7f\u7528;<\/li>\n
            2. \u9700\u8981\u6ce8\u610f\u7684\u662f,\u6bcf\u6b21\u5feb\u7167\u6301\u4e45\u5316\u90fd\u662f\u5c06\u5185\u5b58\u6570\u636e\u5b8c\u6574\u5199\u5165\u5230\u78c1\u76d8\u4e00\u6b21,\u5e76\u4e0d\u662f\u589e\u91cf\u7684\u53ea\u540c\u6b65\u810f\u6570\u636e,\u5982\u679c\u6570\u636e\u91cf\u5927\u7684\u8bdd,\u800c\u4e14\u5199\u64cd\u4f5c\u6bd4\u8f83\u591a,\u5fc5\u7136\u4f1a\u5f15\u8d77\u5927\u91cf\u7684\u78c1\u76d8io\u64cd\u4f5c,\u53ef\u80fd\u4f1a\u4e25\u91cd\u5f71\u54cd\u6027\u80fd;<\/li>\n
            3. \u53e6\u5916\u7531\u4e8e\u5feb\u7167\u65b9\u5f0f\u662f\u5728\u4e00\u5b9a\u95f4\u9694\u65f6\u95f4\u505a\u4e00\u6b21\u7684,\u6240\u4ee5\u5982\u679credis\u610f\u5916down\u6389\u7684\u8bdd,\u5c31\u4f1a\u4e22\u5931\u6700\u540e\u4e00\u6b21\u5feb\u7167\u540e\u7684\u6240\u6709\u4fee\u6539,\u5982\u679c\u5e94\u7528\u8981\u6c42\u4e0d\u80fd\u4e22\u5931\u4efb\u4f55\u4fee\u6539\u7684\u8bdd,\u53ef\u4ee5\u91c7\u7528aof\u6301\u4e45\u5316\u65b9\u5f0f;<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/li>\n
            4. Append-only\u00a0file:<\/a>\n
                \n
              1. aof\u6bd4\u5feb\u7167\u65b9\u5f0f\u6709\u66f4\u597d\u7684\u6301\u4e45\u5316\u6027,\u662f\u7531\u4e8e\u5728\u4f7f\u7528aof\u6301\u4e45\u5316\u65b9\u5f0f\u65f6,redis\u4f1a\u5c06\u6bcf\u4e00\u4e2a\u6536\u5230\u7684\u5199\u547d\u4ee4\u90fd\u901a\u8fc7write\u51fd\u6570\u8ffd\u52a0\u5230\u6587\u4ef6\u4e2d(\u9ed8\u8ba4\u662fappendonly.aof),\u5f53redis\u91cd\u542f\u65f6\u4f1a\u901a\u8fc7\u91cd\u65b0\u6267\u884c\u6587\u4ef6\u4e2d\u4fdd\u5b58\u7684\u5199\u547d\u4ee4\u6765\u5728\u5185\u5b58\u4e2d\u91cd\u5efa\u6574\u4e2a\u6570\u636e\u5e93\u7684\u5185\u5bb9,\u5f53\u7136\u7531\u4e8eos\u4f1a\u5728\u5185\u6838\u4e2d\u7f13\u5b58write\u505a\u7684\u4fee\u6539,\u6240\u4ee5\u53ef\u80fd\u4e0d\u662f\u7acb\u5373\u5199\u5230\u78c1\u76d8\u4e0a,\u8fd9\u6837aof\u65b9\u5f0f\u7684\u6301\u4e45\u5316\u4e5f\u8fd8\u662f\u6709\u53ef\u80fd\u4f1a\u4e22\u5931\u90e8\u5206\u4fee\u6539,\u4e0d\u8fc7\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u544a\u8bc9redis\u6211\u4eec\u60f3\u8981\u901a\u8fc7fsync\u51fd\u6570\u5f3a\u5236os\u5199\u5165\u5230\u78c1\u76d8\u7684\u65f6\u673a:\n
                  \n
                1. appendonly yes:\u542f\u7528aof\u6301\u4e45\u5316\u65b9\u5f0f;<\/li>\n
                2. appendfsync always:\u6bcf\u6b21\u6536\u5230\u5199\u547d\u4ee4\u5c31\u7acb\u5373\u5f3a\u5236\u5199\u5165\u78c1\u76d8,\u6700\u6162\u7684,\u4f46\u662f\u4fdd\u8bc1\u5b8c\u5168\u7684\u6301\u4e45\u5316,\u4e0d\u63a8\u8350\u4f7f\u7528;<\/li>\n
                3. appendfsync everysec:\u6bcf\u79d2\u949f\u5f3a\u5236\u5199\u5165\u78c1\u76d8\u4e00\u6b21,\u5728\u6027\u80fd\u548c\u6301\u4e45\u5316\u65b9\u9762\u505a\u4e86\u5f88\u597d\u7684\u6298\u4e2d,\u63a8\u8350,\u4e5f\u662f\u9ed8\u8ba4\u65b9\u5f0f;<\/li>\n
                4. appendfsync no:\u5b8c\u5168\u4f9d\u8d56os,\u6027\u80fd\u6700\u597d,\u6301\u4e45\u5316\u6ca1\u4fdd\u8bc1;<\/li>\n<\/ol>\n<\/li>\n
                5. aof\u7684\u65b9\u5f0f\u4e5f\u540c\u65f6\u5e26\u6765\u4e86\u53e6\u4e00\u4e2a\u95ee\u9898,\u6301\u4e45\u5316\u6587\u4ef6\u4f1a\u53d8\u7684\u8d8a\u6765\u8d8a\u5927;\u4f8b\u5982\u6211\u4eec\u8c03\u7528incr test\u547d\u4ee4100\u6b21,\u6587\u4ef6\u4e2d\u5fc5\u987b\u4fdd\u5b58\u5168\u90e8\u7684100\u6761\u547d\u4ee4,\u5176\u5b9e\u670999\u6761\u90fd\u662f\u591a\u4f59\u7684,\u56e0\u4e3a\u8981\u6062\u590d\u6570\u636e\u5e93\u7684\u72b6\u6001\u5176\u5b9e\u6587\u4ef6\u4e2d\u4fdd\u5b58\u4e00\u6761set test 100\u5c31\u591f\u4e86;\u4e3a\u4e86\u538b\u7f29aof\u7684\u6301\u4e45\u5316\u6587\u4ef6,redis\u63d0\u4f9b\u4e86bgrewriteaof\u547d\u4ee4,\u6536\u5230\u6b64\u547d\u4ee4redis\u5c06\u4f7f\u7528\u4e0e\u5feb\u7167\u7c7b\u4f3c\u7684\u65b9\u5f0f\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u4ee5\u547d\u4ee4\u7684\u65b9\u5f0f\u4fdd\u5b58\u5230\u4e34\u65f6\u6587\u4ef6\u4e2d,\u6700\u540e\u66ff\u6362\u539f\u6765\u7684\u6587\u4ef6;<\/li>\n
                6. bgrewriteaof\u547d\u4ee4\u539f\u7406:\n
                    \n
                  1. redis\u8c03\u7528fork,\u73b0\u5728\u6709\u7236\u5b50\u4e24\u4e2a\u8fdb\u7a0b;<\/li>\n
                  2. \u5b50\u8fdb\u7a0b\u6839\u636e\u5185\u5b58\u4e2d\u7684\u6570\u636e\u5e93\u5feb\u7167,\u5f80\u4e34\u65f6\u6587\u4ef6\u4e2d\u5199\u5165\u91cd\u5efa\u6570\u636e\u5e93\u72b6\u6001\u7684\u547d\u4ee4;<\/li>\n
                  3. \u7236\u8fdb\u7a0b\u7ee7\u7eed\u5904\u7406client\u8bf7\u6c42,\u9664\u4e86\u628a\u5199\u547d\u4ee4\u5199\u5165\u5230\u539f\u6765\u7684aof\u6587\u4ef6\u4e2d,\u540c\u65f6\u628a\u6536\u5230\u7684\u5199\u547d\u4ee4\u7f13\u5b58\u8d77\u6765,\u8fd9\u6837\u5c31\u80fd\u4fdd\u8bc1\u5982\u679c\u5b50\u8fdb\u7a0b\u91cd\u5199\u5931\u8d25\u7684\u8bdd\u5e76\u4e0d\u4f1a\u51fa\u95ee\u9898;<\/li>\n
                  4. \u5f53\u5b50\u8fdb\u7a0b\u628a\u5feb\u7167\u5185\u5bb9\u5199\u5165\u5df2\u547d\u4ee4\u65b9\u5f0f\u5199\u5230\u4e34\u65f6\u6587\u4ef6\u4e2d\u540e,\u5b50\u8fdb\u7a0b\u53d1\u4fe1\u53f7\u901a\u77e5\u7236\u8fdb\u7a0b,\u7136\u540e\u7236\u8fdb\u7a0b\u628a\u7f13\u5b58\u7684\u5199\u547d\u4ee4\u4e5f\u5199\u5165\u5230\u4e34\u65f6\u6587\u4ef6;<\/li>\n
                  5. \u73b0\u5728\u7236\u8fdb\u7a0b\u53ef\u4ee5\u4f7f\u7528\u4e34\u65f6\u6587\u4ef6\u66ff\u6362\u8001\u7684aof\u6587\u4ef6,\u5e76\u91cd\u547d\u540d,\u540e\u9762\u6536\u5230\u7684\u5199\u547d\u4ee4\u4e5f\u5f00\u59cb\u5f80\u65b0\u7684aof\u6587\u4ef6\u4e2d\u8ffd\u52a0;<\/li>\n<\/ol>\n<\/li>\n
                  6. \u9700\u8981\u6ce8\u610f\u5230\u662f\u91cd\u5199aof\u6587\u4ef6\u7684\u64cd\u4f5c,\u5e76\u6ca1\u6709\u8bfb\u53d6\u65e7\u7684aof\u6587\u4ef6,\u800c\u662f\u5c06\u6574\u4e2a\u5185\u5b58\u4e2d\u7684\u6570\u636e\u5e93\u5185\u5bb9\u7528\u547d\u4ee4\u7684\u65b9\u5f0f\u91cd\u5199\u4e86\u4e00\u4e2a\u65b0\u7684aof\u6587\u4ef6,\u8fd9\u70b9\u548c\u5feb\u7167\u6709\u70b9\u7c7b\u4f3c;<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

                    Redis\u7684\u6570\u636e\u6301\u4e45\u5316 redis\u662f\u4e00\u4e2a\u652f\u6301\u6301\u4e45\u5316\u7684\u5185\u5b58\u6570\u636e\u5e93,\u4e5f\u5c31\u662f\u8bf4redis\u9700\u8981\u7ecf\u5e38\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u540c\u6b65\u5230 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[25,26],"class_list":["post-339","post","type-post","status-publish","format-standard","hentry","category-nosql","tag-nosql","tag-redis"],"_links":{"self":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts\/339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=339"}],"version-history":[{"count":0,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts\/339\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=339"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}