{"id":343,"date":"2013-03-16T21:03:50","date_gmt":"2013-03-16T13:03:50","guid":{"rendered":"http:\/\/www.royalwzy.com\/?p=343"},"modified":"2014-04-11T14:15:25","modified_gmt":"2014-04-11T06:15:25","slug":"redis%e5%ad%a6%e4%b9%a009-%e8%99%9a%e6%8b%9f%e5%86%85%e5%ad%98","status":"publish","type":"post","link":"http:\/\/www.royalwzy.com\/?p=343","title":{"rendered":"Redis\u5b66\u4e6009–\u865a\u62df\u5185\u5b58"},"content":{"rendered":"
\n
Redis\u4e2d\u7684\u865a\u62df\u5185\u5b58<\/div>\n
\n
    \n
  1. Redis\u4e2d\u865a\u62df\u5185\u5b58\u7684\u6982\u5ff5:\n
      \n
    1. redis\u7684\u865a\u62df\u5185\u5b58\u4e0eos\u7684\u865a\u62df\u5185\u5b58\u4e0d\u662f\u540c\u4e00\u4e2a\u6982\u5ff5,\u4f46\u662f\u5b9e\u73b0\u7684\u65b9\u6cd5\u548c\u76ee\u7684\u662f\u76f8\u540c\u7684,\u5c31\u662f\u6682\u65f6\u628a\u4e0d\u7ecf\u5e38\u8bbf\u95ee\u7684\u6570\u636e\u4ece\u5185\u5b58\u4ea4\u6362\u5230\u78c1\u76d8\u4e2d,\u4ece\u800c\u817e\u51fa\u5b9d\u8d35\u7684\u5185\u5b58\u7a7a\u95f4\u7528\u4e8e\u5176\u5b83\u9700\u8981\u8bbf\u95ee\u7684\u6570\u636e;<\/li>\n
    2. \u5bf9\u4e8eredis\u8fd9\u6837\u7684\u5185\u5b58\u6570\u636e\u5e93,\u5185\u5b58\u603b\u662f\u4e0d\u591f\u7528\u7684,\u9664\u4e86\u53ef\u4ee5\u5c06\u6570\u636e\u5206\u5272\u5230\u591a\u4e2aredis server\u5916,\u53e6\u5916\u7684\u80fd\u591f\u63d0\u9ad8\u6570\u636e\u5e93\u5bb9\u91cf\u7684\u529e\u6cd5\u5c31\u662f\u4f7f\u7528vm\u628a\u90a3\u4e9b\u4e0d\u7ecf\u5e38\u8bbf\u95ee\u7684\u6570\u636e\u4ea4\u6362\u7684\u78c1\u76d8\u4e0a;<\/li>\n
    3. \u603b\u662f\u6709\u5c11\u90e8\u5206\u6570\u636e\u88ab\u7ecf\u5e38\u8bbf\u95ee,\u5927\u90e8\u5206\u6570\u636e\u5f88\u5c11\u88ab\u8bbf\u95ee,\u5bf9\u4e8e\u7f51\u7ad9\u6765\u8bf4\u786e\u5b9e\u603b\u662f\u53ea\u6709\u5c11\u91cf\u7528\u6237\u7ecf\u5e38\u6d3b\u8dc3,\u5f53\u5c11\u91cf\u6570\u636e\u88ab\u7ecf\u5e38\u8bbf\u95ee\u65f6,\u4f7f\u7528vm\u4e0d\u4f46\u80fd\u63d0\u9ad8\u5355\u53f0redis server\u6570\u636e\u5e93\u7684\u5bb9\u91cf,\u800c\u4e14\u4e5f\u4e0d\u4f1a\u5bf9\u6027\u80fd\u9020\u6210\u592a\u591a\u5f71\u54cd;<\/li>\n<\/ol>\n<\/li>\n
    4. Redis\u6ca1\u6709\u4f7f\u7528os\u63d0\u4f9b\u7684\u865a\u62df\u5185\u5b58\u673a\u5236\u800c\u662f\u81ea\u5df1\u5728\u7528\u6237\u6001\u5b9e\u73b0\u4e86\u81ea\u5df1\u7684\u865a\u62df\u5185\u5b58\u673a\u5236,\u4e3b\u8981\u539f\u56e0<\/a>\u4e3a:\n
        \n
      1. os\u7684\u865a\u62df\u5185\u5b58\u662f\u4ee54k\u9875\u9762\u4e3a\u6700\u5c0f\u5355\u4f4d\u8fdb\u884c\u4ea4\u6362\u7684,\u800credis\u7684\u5927\u591a\u6570\u5bf9\u8c61\u90fd\u8fdc\u5c0f\u4e8e4k,\u6240\u4ee5\u4e00\u4e2aos\u9875\u9762\u4e0a\u53ef\u80fd\u6709\u591a\u4e2aredis\u5bf9\u8c61;<\/li>\n
      2. \u53e6\u5916redis\u7684\u96c6\u5408\u5bf9\u8c61\u7c7b\u578b\u5982list,set\u53ef\u80fd\u5b58\u5728\u4e0e\u591a\u4e2aos\u9875\u9762\u4e0a,\u6700\u7ec8\u53ef\u80fd\u9020\u6210\u53ea\u670910%\u7684key\u88ab\u7ecf\u5e38\u8bbf\u95ee,\u4f46\u662f\u6240\u6709os\u9875\u9762\u90fd\u4f1a\u88abos\u8ba4\u4e3a\u662f\u6d3b\u8dc3\u7684,\u8fd9\u6837\u53ea\u6709\u5185\u5b58\u771f\u6b63\u8017\u5c3d\u65f6os\u624d\u4f1a\u4ea4\u6362\u9875\u9762;<\/li>\n
      3. \u76f8\u6bd4\u4e8eos\u7684\u4ea4\u6362\u65b9\u5f0f,redis\u53ef\u4ee5\u5c06\u88ab\u4ea4\u6362\u5230\u78c1\u76d8\u7684\u5bf9\u8c61\u8fdb\u884c\u538b\u7f29,\u4fdd\u5b58\u5230\u78c1\u76d8\u7684\u5bf9\u8c61\u53ef\u4ee5\u53bb\u9664\u6307\u9488\u548c\u5bf9\u8c61\u5143\u6570\u636e\u4fe1\u606f,\u4e00\u822c\u538b\u7f29\u540e\u7684\u5bf9\u8c61\u4f1a\u6bd4\u5185\u5b58\u4e2d\u7684\u5bf9\u8c61\u5c0f10\u500d,\u8fd9\u6837redis\u7684vm\u4f1a\u6bd4osvm\u80fd\u5c11\u505a\u5f88\u591aio\u64cd\u4f5c;<\/li>\n<\/ol>\n<\/li>\n
      4. VM\u7684\u914d\u7f6e:\n
          \n
        1. vm-enabled yes \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 # \u5f00\u542fvm\u529f\u80fd;<\/li>\n
        2. vm-swap-file \/tmp\/redis.swap \u00a0 \u00a0 \u00a0 # \u4ea4\u6362\u51fa\u6765\u7684value\u4fdd\u5b58\u7684\u6587\u4ef6\u8def\u5f84\/tmp\/redis.swap;<\/li>\n
        3. vm-max-memory 1000000 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0# redis\u4f7f\u7528\u7684\u6700\u5927\u5185\u5b58\u4e0a\u9650,\u8d85\u8fc7\u4e0a\u9650\u540eredis\u5f00\u59cb\u4ea4\u6362value\u5230\u78c1\u76d8\u6587\u4ef6\u4e2d;<\/li>\n
        4. vm-page-size 32\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # \u6bcf\u4e2a\u9875\u9762\u7684\u5927\u5c0f32\u4e2a\u5b57\u8282;<\/li>\n
        5. vm-pages 134217728\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # \u6700\u591a\u4f7f\u7528\u5728\u6587\u4ef6\u4e2d\u4f7f\u7528\u591a\u5c11\u9875\u9762,\u4ea4\u6362\u6587\u4ef6\u7684\u5927\u5c0f = vm-page-size * vm-pages<\/li>\n
        6. vm-max-threads 4 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 # \u7528\u4e8e\u6267\u884cvalue\u5bf9\u8c61\u6362\u5165\u6362\u51fa\u7684\u5de5\u4f5c\u7ebf\u7a0b\u6570\u91cf,\u63a8\u8350\u8bbe\u7f6e\u4e3acpu\u7684\u6838\u5fc3\u6570,0\u8868\u793a\u4e0d\u4f7f\u7528\u5de5\u4f5c\u7ebf\u7a0b;<\/li>\n<\/ol>\n<\/li>\n
        7. \u53c2\u6570\u7684\u89e3\u91ca:\n
            \n
          1. redis\u7684vm\u5728\u8bbe\u8ba1\u4e0a\u4e3a\u4e86\u4fdd\u8bc1key\u7684\u67e5\u627e\u901f\u5ea6,\u53ea\u4f1a\u5c06value\u4ea4\u6362\u5230swap\u6587\u4ef6\u4e2d,\u6240\u4ee5\u5982\u679c\u662f\u5185\u5b58\u95ee\u9898\u662f\u7531\u4e8e\u592a\u591avalue\u5f88\u5c0f\u7684key\u9020\u6210\u7684,\u90a3\u4e48vm\u5e76\u4e0d\u80fd\u89e3\u51b3;<\/li>\n
          2. \u548cos\u4e00\u6837redis\u4e5f\u662f\u6309\u9875\u9762\u6765\u4ea4\u6362\u5bf9\u8c61\u7684,redis\u89c4\u5b9a\u540c\u4e00\u4e2a\u9875\u9762\u53ea\u80fd\u4fdd\u5b58\u4e00\u4e2a\u5bf9\u8c61,\u4f46\u662f\u4e00\u4e2a\u5bf9\u8c61\u53ef\u4ee5\u4fdd\u5b58\u5728\u591a\u4e2a\u9875\u9762\u4e2d;<\/li>\n
          3. \u5728redis\u4f7f\u7528\u7684\u5185\u5b58\u6ca1\u8d85\u8fc7vm-max-memory\u4e4b\u524d\u662f\u4e0d\u4f1a\u4ea4\u6362\u4efb\u4f55value\u7684,\u5f53\u8d85\u8fc7\u6700\u5927\u5185\u5b58\u9650\u5236\u540e,redis\u4f1a\u9009\u62e9\u8f83\u8001\u7684\u5bf9\u8c61,\u5982\u679c\u4e24\u4e2a,\u5bf9\u8c61\u4e00\u6837\u8001\u4f1a\u4f18\u5148\u4ea4\u6362\u6bd4\u8f83\u5927\u7684\u5bf9\u8c61,\u7cbe\u786e\u7684\u516c\u5f0fswappability = age log(size_in_memory);<\/li>\n
          4. \u5bf9\u4e8evm-page-size\u7684\u8bbe\u7f6e\u5e94\u8be5\u6839\u636e\u81ea\u5df1\u7684\u5e94\u7528\u5c06\u9875\u9762\u7684\u5927\u5c0f\u8bbe\u7f6e\u4e3a\u53ef\u4ee5\u5bb9\u7eb3\u5927\u591a\u6570\u5bf9\u8c61\u7684\u5927\u5c0f,\u592a\u5927\u4e86\u4f1a\u6d6a\u8d39\u78c1\u76d8\u7a7a\u95f4,\u592a\u5c0f\u4e86\u4f1a\u9020\u6210\u4ea4\u6362\u6587\u4ef6\u51fa\u73b0\u788e\u7247;<\/li>\n
          5. \u5bf9\u4e8e\u4ea4\u6362\u6587\u4ef6\u4e2d\u7684\u6bcf\u4e2a\u9875\u9762,redis\u4f1a\u5728\u5185\u5b58\u4e2d\u5bf9\u5e94\u4e00\u4e2a1bit\u503c\u6765\u8bb0\u5f55\u9875\u9762\u7684\u7a7a\u95f2\u72b6\u6001,\u6240\u4ee5\u50cf\u4e0a\u9762\u914d\u7f6e\u4e2d\u9875\u9762\u6570\u91cf(vm-pages 134217728)\u4f1a\u5360\u752816M(134217728\/8\/1024\/1024)\u5185\u5b58\u7528\u6765\u8bb0\u5f55\u9875\u9762\u7a7a\u95f2\u72b6\u6001;<\/li>\n
          6. vm-max-threads\u8868\u793a\u7528\u505a\u4ea4\u6362\u4efb\u52a1\u7684\u7ebf\u7a0b\u6570\u91cf,\u5982\u679c\u5927\u4e8e0\u63a8\u8350\u8bbe\u4e3a\u670d\u52a1\u5668\u7684cpu core\u7684\u6570\u91cf,\u5982\u679c\u662f0\u5219\u4ea4\u6362\u8fc7\u7a0b\u5728\u4e3b\u7ebf\u7a0b\u8fdb\u884c;<\/li>\n<\/ol>\n<\/li>\n
          7. vm\u7684\u5de5\u4f5c\u539f\u7406:\n
              \n
            1. \u5f53vm-max-threads\u8bbe\u4e3a0\u65f6(Blocking VM):\n
                \n
              1. \u6362\u51fa:\u4e3b\u7ebf\u7a0b\u5b9a\u671f\u68c0\u67e5\u53d1\u73b0\u5185\u5b58\u8d85\u51fa\u6700\u5927\u4e0a\u9650\u540e,\u4f1a\u76f4\u63a5\u5df2\u963b\u585e\u7684\u65b9\u5f0f,\u5c06\u9009\u4e2d\u7684\u5bf9\u8c61\u4fdd\u5b58\u5230swap\u6587\u4ef6\u4e2d,\u5e76\u91ca\u653e\u5bf9\u8c61\u5360\u7528\u7684\u5185\u5b58,\u6b64\u8fc7\u7a0b\u4f1a\u4e00\u76f4\u91cd\u590d\u76f4\u5230\u4e0b\u9762\u6761\u4ef6\u6ee1\u8db3\n
                  \n
                1. \u5185\u5b58\u4f7f\u7528\u964d\u5230\u6700\u5927\u9650\u5236\u4ee5\u4e0b;<\/li>\n
                2. swap\u6587\u4ef6\u6ee1\u4e86;<\/li>\n
                3. \u51e0\u4e4e\u5168\u90e8\u7684\u5bf9\u8c61\u90fd\u88ab\u4ea4\u6362\u5230\u78c1\u76d8\u4e86;<\/li>\n<\/ol>\n<\/li>\n
                4. \u6362\u5165:\u5f53\u6709client\u8bf7\u6c42value\u88ab\u6362\u51fa\u7684key\u65f6,\u4e3b\u7ebf\u7a0b\u4f1a\u4ee5\u963b\u585e\u7684\u65b9\u5f0f\u4ece\u6587\u4ef6\u4e2d\u52a0\u8f7d\u5bf9\u5e94\u7684value\u5bf9\u8c61,\u52a0\u8f7d\u65f6\u6b64\u65f6\u4f1a\u963b\u585e\u6240\u6709\u7684client,\u7136\u540e\u5904\u7406client\u7684\u8bf7\u6c42;<\/li>\n<\/ol>\n<\/li>\n
                5. \u5f53vm-max-threads\u5927\u4e8e0(Threaded VM):\n
                    \n
                  1. \u6362\u51fa:\u5f53\u4e3b\u7ebf\u7a0b\u68c0\u6d4b\u5230\u4f7f\u7528\u5185\u5b58\u8d85\u8fc7\u6700\u5927\u4e0a\u9650,\u4f1a\u5c06\u9009\u4e2d\u7684\u8981\u4ea4\u6362\u7684\u5bf9\u8c61\u4fe1\u606f\u653e\u5230\u4e00\u4e2a\u961f\u5217\u4e2d\u4ea4\u7531\u5de5\u4f5c\u7ebf\u7a0b\u540e\u53f0\u5904\u7406,\u4e3b\u7ebf\u7a0b\u4f1a\u7ee7\u7eed\u5904\u7406client\u8bf7\u6c42;<\/li>\n
                  2. \u6362\u5165:\u5982\u679c\u6709client\u8bf7\u6c42\u7684key\u88ab\u6362\u51fa\u4e86,\u4e3b\u7ebf\u7a0b\u5148\u963b\u585e\u53d1\u51fa\u547d\u4ee4\u7684client,\u7136\u540e\u5c06\u52a0\u8f7d\u5bf9\u8c61\u7684\u4fe1\u606f\u653e\u5230\u4e00\u4e2a\u961f\u5217\u4e2d,\u8ba9\u5de5\u4f5c\u7ebf\u7a0b\u53bb\u52a0\u8f7d,\u52a0\u8f7d\u5b8c\u6bd5\u540e\u5de5\u4f5c\u7ebf\u7a0b\u901a\u77e5\u4e3b\u7ebf\u7a0b,\u4e3b\u7ebf\u7a0b\u518d\u6267\u884cclient\u7684\u547d\u4ee4,\u8fd9\u79cd\u65b9\u5f0f\u53ea\u963b\u585e\u8bf7\u6c42value\u88ab\u6362\u51fakey\u7684client;<\/li>\n<\/ol>\n<\/li>\n
                  3. \u603b\u7684\u6765\u8bf4blocking vm\u7684\u65b9\u5f0f\u603b\u7684\u6027\u80fd\u4f1a\u597d\u4e00\u4e9b,\u56e0\u4e3a\u4e0d\u9700\u8981\u7ebf\u7a0b\u540c\u6b65,\u521b\u5efa\u7ebf\u7a0b\u548c\u6062\u590d\u88ab\u963b\u585e\u7684client\u7b49\u5f00\u9500,\u4f46\u662f\u4e5f\u76f8\u5e94\u7684\u727a\u7272\u4e86\u54cd\u5e94\u6027;threaded vm\u7684\u65b9\u5f0f\u4e3b\u7ebf\u7a0b\u4e0d\u4f1a\u963b\u585e\u5728\u78c1\u76d8io\u4e0a,\u6240\u4ee5\u54cd\u5e94\u6027\u66f4\u597d;\u5982\u679c\u5e94\u7528\u4e0d\u592a\u7ecf\u5e38\u53d1\u751f\u6362\u5165\u6362\u51fa,\u800c\u4e14\u4e5f\u4e0d\u592a\u5728\u610f\u6709\u70b9\u5ef6\u8fdf\u7684\u8bdd\u5219\u63a8\u8350\u4f7f\u7528blocking vm\u7684\u65b9\u5f0f;<\/li>\n<\/ol>\n<\/li>\n
                  4. \u76f8\u5173\u94fe\u63a5:\n
                      \n
                    1. http:\/\/antirez.com\/post\/redis-virtual-memory-story.html;<\/a><\/li>\n
                    2. http:\/\/redis.io\/topics\/internals-vm;<\/a><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

                      Redis\u4e2d\u7684\u865a\u62df\u5185\u5b58 Redis\u4e2d\u865a\u62df\u5185\u5b58\u7684\u6982\u5ff5: redis\u7684\u865a\u62df\u5185\u5b58\u4e0eos\u7684\u865a\u62df\u5185\u5b58\u4e0d\u662f\u540c\u4e00\u4e2a\u6982\u5ff5,\u4f46\u662f […]<\/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-343","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\/343","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=343"}],"version-history":[{"count":0,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts\/343\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=343"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}