{"id":628,"date":"2015-06-26T20:45:07","date_gmt":"2015-06-26T12:45:07","guid":{"rendered":"http:\/\/www.ipcpu.com\/?p=628"},"modified":"2015-06-26T20:45:07","modified_gmt":"2015-06-26T12:45:07","slug":"memcached-one","status":"publish","type":"post","link":"https:\/\/c.ipcpu.com\/2015\/06\/memcached-one\/","title":{"rendered":"Memcached\u4e13\u9898\u4e00\u3001\u6982\u8ff0\u3001\u57fa\u672c\u7528\u6cd5\u548c\u5206\u5e03\u5f0f"},"content":{"rendered":"

Memcached\u4e13\u9898\u4e00\u3001\u6982\u8ff0\u548c\u57fa\u672c\u7528\u6cd5.md<\/p>\n

\u4e00\u3001memcached\u662f\u4ec0\u4e48\uff1f<\/h2>\n

memcached \u662f\u4ee5LiveJournal\u65d7\u4e0bDanga Interactive \u516c\u53f8\u7684Brad Fitzpatric \u4e3a\u9996\u5f00\u53d1\u7684\u4e00\u6b3e\u8f6f\u4ef6\u3002\u73b0\u5728\u5df2\u6210\u4e3amixi\u3001hatena\u3001Facebook\u3001Vox\u3001LiveJournal \u7b49\u4f17\u591a\u670d\u52a1\u4e2d\u63d0\u9ad8Web\u5e94\u7528\u6269\u5c55\u6027\u7684\u91cd\u8981\u56e0\u7d20\u3002<\/p>\n

\u8bb8\u591aWeb\u5e94\u7528\u90fd\u5c06\u6570\u636e\u4fdd\u5b58\u5230RDBMS\u4e2d\uff08\u4f8b\u5982mysql\uff09\uff0c\u5e94\u7528\u670d\u52a1\u5668\u4ece\u4e2d\u8bfb\u53d6\u6570\u636e\u5e76\u5728\u6d4f\u89c8\u5668\u4e2d\u663e\u793a\u3002\u4f46\u968f\u7740\u6570\u636e\u91cf\u7684\u589e\u5927\u3001\u8bbf\u95ee\u7684\u96c6\u4e2d\uff0c\u5c31\u4f1a\u51fa\u73b0RDBMS \u7684\u8d1f\u62c5\u52a0\u91cd\u3001\u6570\u636e\u5e93\u54cd\u5e94\u6076\u5316\u3001\u7f51\u7ad9\u663e\u793a\u5ef6\u8fdf\u7b49\u91cd\u5927\u5f71\u54cd\u3002\u8fd9\u65f6\u5c31\u8be5memcached \u5927\u663e\u8eab\u624b\u4e86\u3002memcached \u662f\u9ad8\u6027\u80fd\u7684\u5206\u5e03\u5f0f\u5185\u5b58\u7f13\u5b58\u670d\u52a1\u5668\u3002\u4e00\u822c\u7684\u4f7f\u7528\u76ee\u7684\u662f\uff0c\u901a\u8fc7\u7f13\u5b58\u6570\u636e\u5e93\u67e5\u8be2\u7ed3\u679c\uff0c\u51cf\u5c11\u6570\u636e\u5e93\u8bbf\u95ee\u6b21\u6570\uff0c\u4ee5\u63d0\u9ad8\u52a8\u6001Web \u5e94\u7528\u7684\u901f\u5ea6\u3001\u63d0\u9ad8\u53ef\u6269\u5c55\u6027\u3002<\/p>\n

\u4e3a\u4e86\u63d0\u9ad8\u6027\u80fd\uff0cmemcached \u4e2d\u4fdd\u5b58\u7684\u6570\u636e\u90fd\u5b58\u50a8\u5728memcached \u5185\u7f6e\u7684\u5185\u5b58\u5b58\u50a8\u7a7a\u95f4\u4e2d\u3002\u7531\u4e8e\u6570\u636e\u4ec5\u5b58\u5728\u4e8e\u5185\u5b58\u4e2d\uff0c\u56e0\u6b64\u91cd\u542fmemcached\u3001\u91cd\u542f\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u5bfc\u81f4\u5168\u90e8\u6570\u636e\u6d88\u5931\u3002\u53e6\u5916\uff0c\u5185\u5bb9\u5bb9\u91cf\u8fbe\u5230\u6307\u5b9a\u503c\u4e4b\u540e\uff0c\u5c31\u57fa\u4e8eLRU(Least Recently Used)\u7b97\u6cd5\u81ea\u52a8\u5220\u9664\u4e0d\u4f7f\u7528\u7684\u7f13\u5b58\u3002memcached \u672c\u8eab\u662f\u4e3a\u7f13\u5b58\u800c\u8bbe\u8ba1\u7684\u670d\u52a1\u5668\uff0c\u56e0\u6b64\u5e76\u6ca1\u6709\u8fc7\u591a\u8003\u8651\u6570\u636e\u7684\u6c38\u4e45\u6027\u95ee\u9898\u3002<\/p>\n

\u4e8c\u3001memcached\u5b89\u88c5\u548c\u542f\u52a8<\/h2>\n

memcached\u4e3b\u8981\u662f\u57fa\u4e8eLibevent\u5e93\u8fdb\u884c\u5f00\u53d1\u7684\uff0c\u5b89\u88c5memcached\u4e4b\u524d\u9700\u8981\u5148\u5b89\u88c5libevent\u4f9d\u8d56\u3002<\/p>\n

memcached\u53ef\u4ee5\u4f7f\u7528yum\u6765\u5b89\u88c5\uff0c\u4f46\u7531\u4e8e\u65e9\u5148\u7248\u672c\u4f1a\u5b58\u5728\u4e00\u4e9bbug\uff0c\u5efa\u8bae\u4ece\u5b98\u7f51\u4e0b\u8f7d\u7f16\u8bd1\u6700\u65b0\u7a33\u5b9a\u7248<\/p>\n

\u542f\u52a8\u547d\u4ee4\u5982\u4e0b<\/p>\n

  1. \/home\/<\/span>app<\/span>\/<\/span>memcahced<\/span>\/<\/span>bin<\/span>\/<\/span>memcached <\/span>-<\/span>d <\/span>-<\/span>p <\/span>11211<\/span> <\/span>-<\/span>u memcached <\/span>-<\/span>m <\/span>25690<\/span> <\/span>-<\/span>c <\/span>1024<\/span> <\/span>-<\/span>P <\/span>\/<\/span>var<\/span>\/<\/span>run<\/span>\/<\/span>memcached<\/span>\/<\/span>memcached<\/span>.<\/span>pid  <\/span><\/code><\/li><\/ol><\/pre>\n
    \u542f\u52a8\u53c2\u6570\u5982\u4e0b<\/p>\n
    \n
    -p \u4fa6\u542c\u7684\u7aef\u53e3\uff0c\u9ed8\u8ba4\u4e3a11211 
    \n  -m \u4f7f\u7528\u5185\u5b58\u5927\u5c0f\uff0c\u9ed8\u8ba4\u768464m 
    \n  -d \u4f5c\u4e3adaemon \u5728\u540e\u53f0\u542f\u52a8 
    \n  -u \u542f\u52a8\u7528\u6237\uff0c\u5efa\u8bae\u7528\u666e\u901a\u7528\u6237\u542f\u52a8 
    \n  -l \u4fa6\u542c\u7684\u5730\u5740\uff0c\u9ed8\u8ba4\u4e3a\u6240\u6709\u53ef\u4ee5\u8bbf\u95ee\u7684\u5730\u5740 
    \n  -M \u7528\u4e8e\u5728\u5185\u5b58\u6ea2\u51fa\u7684\u65f6\u5019\uff0c\u8fd4\u56de\u4e00\u4e2a\u9519\u8bef\uff0c\u7981\u6b62\u81ea\u52a8LRU\u79fb\u51fa\u6570\u636e\uff0c\u66ff\u4ee3\u7684\u662f\u8fd4\u56de\u4e00\u4e2aerror 
    \n  -P Pid \u6587\u4ef6\u5b58\u5728\u7684\u8def\u5f84\uff0c\u4ec5\u9650\u52a0\u4e0a-d \u53c2\u6570\u662f\u7528 
    \n  -c \u6700\u5927\u540c\u65f6\u7684\u8fde\u63a5\u6570\uff0c\u9ed8\u8ba4\u4e3a1024 
    \n  -f 1.25    \u589e\u957f\u56e0\u5b50\uff0c\u9ed8\u8ba41.25<\/p>\n<\/blockquote>\n
    \u4e09\u3001\u547d\u4ee4\u884c\u8bbf\u95eememcached<\/h2>\n
    \u4f7f\u7528telnet\u53ef\u4ee5\u8fde\u63a5\u5230memcached\u670d\u52a1\u5668<\/p>\n
    stats \u547d\u4ee4\u53ef\u4ee5\u67e5\u770b\u670d\u52a1\u5668\u72b6\u6001 
    \nflush_all   \u4f7f\u5df2\u7ecf\u5b58\u5728\u7684\u9879\u76ee\u7acb\u5373\u5931\u6548<\/p>\n
    \u4e00\u822c\u547d\u4ee4\u7684\u683c\u5f0f<\/p>\n
    1. <command<\/span> <\/span>name<\/span>><\/span> <\/span><key><\/span> <\/span><flags><\/span> <\/span><exptime><\/span> <\/span><bytes><\/span><\/code><\/li>
    2. <data<\/span> <\/span>block<\/span>><\/span><\/code><\/li>
    3. #@<\/span><command<\/span> <\/span>name<\/span>><\/span> \u547d\u4ee4\uff0c\u4f8b\u5982get\u3001set\u7b49<\/span><\/code><\/li>
    4. #@<\/span><key><\/span> \u540d\u79f0\uff0c\u5b57\u7b26\u4e32\uff0c\u6700\u5927\u957f\u5ea6\u662f250\u4e2a\u5b57\u7b26<\/span><\/code><\/li>
    5. #@<\/span><flags><\/span> \u5ba2\u6237\u7aef\u7528\u6765\u6807\u8bc6\u6570\u636e\u683c\u5f0f\u7684\u6570\u503c<\/span><\/code><\/li>
    6. #@<\/span><exptime><\/span> \u5b58\u6d3b\u65f6\u95f4<\/span><\/code><\/li>
    7. #@<\/span><bytes><\/span> \u6570\u636e\u5b57\u8282\u6570<\/span><\/code><\/li><\/ol><\/pre>\n
      \u6837\u4f8b\u5982\u4e0b\uff1a<\/p>\n
      1. [<\/span>root@QYER<\/span>-<\/span>1<\/span>-<\/span>17<\/span> <\/span>~]#<\/span>telnet <\/span>10.1<\/span>.<\/span>1.17<\/span> <\/span>11211<\/span><\/code><\/li>
      2. Trying<\/span> <\/span>10.1<\/span>.<\/span>1.17<\/span>...<\/span><\/code><\/li>
      3. Connected<\/span> to <\/span>10.1<\/span>.<\/span>1.17<\/span>.<\/span><\/code><\/li>
      4. Escape<\/span> character <\/span>is<\/span> <\/span>'^]'<\/span>.<\/span><\/code><\/li>
      5. set<\/span> aabbc <\/span>0<\/span> <\/span>0<\/span> <\/span>3<\/span><\/code><\/li>
      6. abc<\/span><\/code><\/li>
      7. STORED<\/span><\/code><\/li>
      8. get<\/span> aabbc<\/span><\/code><\/li>
      9. VALUE aabbc <\/span>0<\/span> <\/span>3<\/span><\/code><\/li>
      10. abc<\/span><\/code><\/li>
      11. END<\/span><\/code><\/li>
      12. delete<\/span> aabbc<\/span><\/code><\/li>
      13. DELETED<\/span><\/code><\/li>
      14. stats<\/span><\/code><\/li>
      15. STAT pid <\/span>1242<\/span><\/code><\/li>
      16. STAT uptime <\/span>79555<\/span><\/code><\/li>
      17. STAT time <\/span>1482636612<\/span><\/code><\/li>
      18. STAT version <\/span>1.4<\/span>.<\/span>4<\/span><\/code><\/li>
      19. STAT pointer_size <\/span>64<\/span><\/code><\/li>
      20. STAT rusage_user <\/span>404.116564<\/span><\/code><\/li>
      21. STAT rusage_system <\/span>1145.397873<\/span><\/code><\/li>
      22. ...<\/span><\/code><\/li><\/ol><\/pre>\n
        \u4f7f\u7528nc\u4f20\u9012\u547d\u4ee4\u5230memcached 
        \n\u6709\u65f6\u6211\u4eec\u9700\u8981\u7528shell\u811a\u672c\u8c03\u7528memcached\uff0c\u6bcf\u6b21telnet\u5c82\u4e0d\u662f\u5f88\u9ebb\u70e6\uff0c\u4e0d\u8981\u6015\uff0c\u4e0b\u9762\u63d0\u4f9bnc\u4f20\u9012\u547d\u4ee4<\/p>\n
        1. echo <\/span>-<\/span>e <\/span>'add my_key 0 60 11\\r\\nhello world\\r'<\/span> <\/span>|<\/span> nc <\/span>10.1<\/span>.<\/span>1.17<\/span> <\/span>11211<\/span><\/code><\/li>
        2. echo <\/span>\"stats items\"<\/span>  <\/span>|<\/span> nc <\/span>10.1<\/span>.<\/span>1.17<\/span> <\/span>11211<\/span><\/code><\/li><\/ol><\/pre>\n
          \u56db\u3001memcache\u7684\u5206\u5e03\u5f0f<\/h2>\n
          memcached\u867d\u7136\u79f0\u4e3a\u201c\u5206\u5e03\u5f0f\u201d\u7f13\u5b58\u670d\u52a1\u5668\uff0c\u4f46\u670d\u52a1\u5668\u7aef\u5e76\u6ca1\u6709\u201c\u5206\u5e03\u5f0f\u201d\u529f\u80fd\u3002\u670d\u52a1\u5668\u7aef\u4ec5\u5305\u62ec\u5185\u5b58\u5b58\u50a8\u529f\u80fd\uff0c\u5176\u5b9e\u73b0\u975e\u5e38\u7b80\u5355\u3002\u81f3\u4e8ememcached\u7684\u5206\u5e03\u5f0f\uff0c\u5219\u662f\u5b8c\u5168\u7531\u5ba2\u6237\u7aef\u7a0b\u5e8f\u5e93\u5b9e\u73b0\u7684\u3002\u8fd9\u79cd\u5206\u5e03\u5f0f\u662fmemcached\u7684\u6700\u5927\u7279\u70b9\u3002<\/p>\n
          <\/p>\n
          Memcached\u5206\u5e03\u5f0f\u65b9\u6cd5<\/h4>\n
          1.\u6839\u636e\u4f59\u6570\u8ba1\u7b97<\/strong><\/p>\n
          \u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u7684\u8bf4\u5c31\u662f\u201d\u6839\u636e\u670d\u52a1\u5668\u7684\u53f0\u6570\u7684\u4f59\u6570\u6765\u8fdb\u884c\u5206\u6563\u201c\u3002\u9996\u5148\u6c42\u53d6\u952e\u6240\u5bf9\u5e94\u7684\u6574\u6570\u54c8\u5e0c\u503c\uff0c\u7136\u540e\u6839\u636e\u4f59\u6570\u6765\u9009\u62e9\u670d\u52a1\u5668\u3002<\/p>\n
          \u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u9ad8\u6548\uff0c\u800c\u4e14\u6570\u636e\u7684\u5206\u6563\u6027\u4e5f\u975e\u5e38\u7684\u597d\u3002\u4f46\u662f\u95ee\u9898\u662f\u5f53\u589e\u52a0\u6216\u8005\u5220\u9664\u4e00\u53f0memcached\u670d\u52a1\u5668\u7684\u65f6\u5019\uff0c\u4f59\u6570\u5c31\u4f1a\u53d1\u751f\u5de8\u5927\u7684\u53d8\u5316\u3002\u8fd9\u6837\u5c31\u6ca1\u6709\u529e\u6cd5\u83b7\u53d6\u548c\u4fdd\u5b58\u65f6\u95f4\u76f8\u5e94\u7684\u670d\u52a1\u5668\u3002\u4ece\u800c\u4f1a\u6781\u5927\u7684\u964d\u4f4e\u7f13\u5b58\u7684\u547d\u4e2d\u7387\u3002<\/p>\n
          2. \u4e00\u81f4\u6027\u54c8\u5e0c<\/strong><\/p>\n
          <\/p>\n
          \u8fd9\u79cd\u65b9\u6cd5\u9996\u5148\u6c42\u51famemcached\u670d\u52a1\u5668\u7684\u54c8\u5e0c\u503c\uff0c\u7136\u540e\u5c06\u5b83\u5206\u914d\u52300~2^32\u7684\u5706\u4e0a\uff0c\u7136\u540e\u4f7f\u7528\u540c\u6837\u7684\u529e\u6cd5\u6c42\u51fa\u6570\u636e\u7684\u5065\u7684\u54c8\u5e0c\u503c\uff0c\u5c06\u5176\u6620\u5c04\u5230\u5706\u4e0a\u3002\u7136\u540e\u4ece\u6570\u636e\u6620\u5c04\u7684\u70b9\u5f00\u59cb\u987a\u65f6\u9488\u7684\u67e5\u627e\uff0c\u5c06\u6570\u636e\u4fdd\u5b58\u5230\u67e5\u627e\u5230\u7684\u7b2c\u4e00\u53f0\u670d\u52a1\u5668\u4e0a\u9762\u3002\u5982\u679c\u8d85\u51fa\u4e862^32\u4ecd\u7136\u6ca1\u6709\u627e\u5230\u670d\u52a1\u5668\uff0c\u90a3\u4e48\u5c31\u5c06\u6570\u636e\u4fdd\u5b58\u5230\u7b2c\u4e00\u53f0memcached\u670d\u52a1\u5668\u4e0a\u9762\u3002<\/p>\n
          \u8fd9\u79cd\u65b9\u6cd5\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u89e3\u51b3\u4e86\u5728\u4fee\u6539memcached\u670d\u52a1\u5668\u6570\u636e\u7684\u65f6\u5019\u5bf9\u7f13\u5b58\u547d\u4e2d\u7387\u7684\u5f71\u54cd\u3002\u5728\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u4e2d\uff0c\u53ea\u6709\u5728\u8fd9\u4e2a\u5706\u4e0a\uff0c\u4ece\u589e\u52a0\u670d\u52a1\u5668\u7684\u90a3\u4e2a\u70b9\u9006\u65f6\u9488\u9047\u5230\u7684\u7b2c\u4e00\u53f0\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u5065\u4f1a\u53d7\u5230\u5f71\u54cd\u3002\u56e0\u6b64\u4e00\u81f4\u6027\u54c8\u5e0c\u6700\u5927\u9650\u5ea6\u7684\u6291\u5236\u4e86\u952e\u7684\u91cd\u65b0\u5206\u5e03\u3002<\/p>\n
          \u4e94\u3001\u53c2\u8003\u8d44\u6599<\/h2>\n
          http:\/\/www.cnblogs.com\/jeffwongishandsome\/archive\/2011\/11\/06\/2238265.html<\/a> 
          \n          http:\/\/www.jianshu.com\/p\/2ca761b21842<\/a> 
          \n          http:\/\/blog.csdn.net\/kongqz\/article\/details\/6695417<\/a> 
          \n          http:\/\/www.cnblogs.com\/rollenholt\/p\/3381429.html<\/a> 
          \n          https:\/\/my.oschina.net\/andylucc\/blog\/671447<\/a> 
          \n          http:\/\/blog.charlee.li\/memcached-004\/<\/a><\/p>\n
          \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aIPCPU-\u7f51\u7edc\u4e4b\u8def<\/a> » Memcached\u4e13\u9898\u4e00\u3001\u6982\u8ff0\u3001\u57fa\u672c\u7528\u6cd5\u548c\u5206\u5e03\u5f0f<\/a><\/p>","protected":false},"excerpt":{"rendered":"
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