{"id":56924,"date":"2025-08-15T01:14:55","date_gmt":"2025-08-14T17:14:55","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/56924.html"},"modified":"2025-08-15T01:14:55","modified_gmt":"2025-08-14T17:14:55","slug":"memcached-%e8%af%a6%e8%a7%a3%ef%bc%9a%e9%ab%98%e6%80%a7%e8%83%bd%e5%88%86%e5%b8%83%e5%bc%8f%e5%86%85%e5%ad%98%e7%bc%93%e5%ad%98%e7%b3%bb%e7%bb%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/56924.html","title":{"rendered":"Memcached \u8be6\u89e3\uff1a\u9ad8\u6027\u80fd\u5206\u5e03\u5f0f\u5185\u5b58\u7f13\u5b58\u7cfb\u7edf"},"content":{"rendered":"

Memcached \u8be6\u89e3：\u9ad8\u6027\u80fd\u5206\u5e03\u5f0f\u5185\u5b58\u7f13\u5b58\u7cfb\u7edf<\/h2>\n

Memcached \u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u3001\u9ad8\u6027\u80fd\u7684\u3001\u5206\u5e03\u5f0f\u7684 \u5185\u5b58\u5bf9\u8c61\u7f13\u5b58\u7cfb\u7edf，\u6700\u521d\u7531 LiveJournal \u5728 2003 \u5e74\u5f00\u53d1，\u7528\u4e8e\u7f13\u89e3\u6570\u636e\u5e93\u8d1f\u8f7d\u3002\u5b83\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e Web \u5e94\u7528\u4e2d，\u4f5c\u4e3a\u6570\u636e\u5e93\u524d\u7684\u201c\u7b2c\u4e00\u9053\u9632\u7ebf\u201d，\u663e\u8457\u63d0\u5347\u7cfb\u7edf\u54cd\u5e94\u901f\u5ea6\u548c\u5e76\u53d1\u80fd\u529b\u3002<\/p>\n

\u5c3d\u7ba1\u8fd1\u5e74\u6765 Redis \u66f4\u4e3a\u6d41\u884c，\u4f46 Memcached \u4f9d\u7136\u5728\u8bb8\u591a\u5927\u578b\u4e92\u8054\u7f51\u516c\u53f8（\u5982 Facebook\u3001Twitter\u3001Wikipedia）\u4e2d\u7a33\u5b9a\u8fd0\u884c，\u5c24\u5176\u5728\u7eaf\u7f13\u5b58\u573a\u666f\u4e0b\u5177\u6709\u72ec\u7279\u4f18\u52bf\u3002<\/p>\n

\n

\u4e00\u3001Memcached \u7684\u5b9a\u4f4d\u4e0e\u6838\u5fc3\u4ef7\u503c<\/h3>\n\n\u7279\u6027\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n
🚀 \u7eaf\u5185\u5b58\u7f13\u5b58<\/td>\n\u6570\u636e\u4ec5\u5b58\u50a8\u5728\u5185\u5b58\u4e2d，\u4e0d\u652f\u6301\u6301\u4e45\u5316<\/td>\n<\/tr>\n
🔌 \u7b80\u5355\u9ad8\u6548<\/td>\n\u534f\u8bae\u7b80\u5355，\u53ea\u652f\u6301\u5b57\u7b26\u4e32\u952e\u503c\u5bf9，\u6027\u80fd\u6781\u9ad8<\/td>\n<\/tr>\n
🌐 \u5206\u5e03\u5f0f\u67b6\u6784<\/td>\n\u5ba2\u6237\u7aef\u901a\u8fc7\u4e00\u81f4\u6027\u54c8\u5e0c\u51b3\u5b9a\u6570\u636e\u5b58\u653e\u5230\u54ea\u4e2a\u8282\u70b9<\/td>\n<\/tr>\n
🧩 LAMP\/LEMP \u6808\u6807\u914d<\/td>\n\u4e0e PHP\u3001MySQL \u6df1\u5ea6\u96c6\u6210<\/td>\n<\/tr>\n
💡 \u7f13\u5b58\u52a0\u901f<\/td>\n\u4e3b\u8981\u7528\u9014：\u7f13\u5b58\u6570\u636e\u5e93\u67e5\u8be2\u7ed3\u679c\u3001\u4f1a\u8bdd\u3001\u9875\u9762\u7247\u6bb5\u7b49<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u2705 \u4e00\u53e5\u8bdd\u603b\u7ed3：
\nMemcached \u662f\u4e00\u4e2a\u4e13\u6ce8\u4e8e\u201c\u6781\u901f\u7f13\u5b58\u201d\u7684\u8f7b\u91cf\u7ea7\u5206\u5e03\u5f0f\u5185\u5b58 KV \u5b58\u50a8，\u9002\u5408\u9ad8\u5e76\u53d1\u3001\u4f4e\u5ef6\u8fdf\u7684\u53ea\u8bfb\u7f13\u5b58\u573a\u666f\u3002<\/p>\n

\n

\u4e8c\u3001Memcached \u7684\u6838\u5fc3\u7279\u6027<\/h3>\n\n\u7279\u6027\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n\n\n\n\n
\u26a1 \u6781\u81f4\u6027\u80fd<\/td>\n\u5355\u673a QPS \u53ef\u8fbe 10\u4e07+，\u5ef6\u8fdf\u5fae\u79d2\u7ea7<\/td>\n<\/tr>\n
🧱 \u57fa\u4e8e\u5185\u5b58<\/td>\n\u6240\u6709\u6570\u636e\u5b58\u50a8\u5728 RAM \u4e2d，\u91cd\u542f\u540e\u4e22\u5931<\/td>\n<\/tr>\n
🔗 \u65e0\u6301\u4e45\u5316<\/td>\n\u4e0d\u652f\u6301 RDB\/AOF，\u4e0d\u662f\u6570\u636e\u5e93\u66ff\u4ee3\u54c1<\/td>\n<\/tr>\n
📦 \u952e\u503c\u7ed3\u6784<\/td>\nKey-Value \u5b58\u50a8，Value \u6700\u5927 1MB<\/td>\n<\/tr>\n
🧼 LRU \u81ea\u52a8\u6dd8\u6c70<\/td>\n\u5185\u5b58\u6ee1\u65f6\u81ea\u52a8\u6dd8\u6c70\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u6570\u636e<\/td>\n<\/tr>\n
🌐 \u5206\u5e03\u5f0f\u8bbe\u8ba1<\/td>\n\u591a\u8282\u70b9\u96c6\u7fa4，\u5ba2\u6237\u7aef\u51b3\u5b9a\u6570\u636e\u5206\u5e03<\/td>\n<\/tr>\n
🔄 \u4e00\u81f4\u6027\u54c8\u5e0c<\/td>\n\u51cf\u5c11\u8282\u70b9\u589e\u51cf\u65f6\u7684\u6570\u636e\u8fc1\u79fb\u91cf<\/td>\n<\/tr>\n
🛠 \u4e8c\u8fdb\u5236\u534f\u8bae<\/td>\n\u652f\u6301\u9ad8\u6548\u901a\u4fe1（\u53ef\u9009）<\/td>\n<\/tr>\n
📡 TCP\/UDP \u652f\u6301<\/td>\nUDP \u7528\u4e8e\u9ad8\u541e\u5410\u3001\u5bb9\u5fcd\u4e22\u5305\u573a\u666f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u4e09\u3001\u5de5\u4f5c\u539f\u7406\u4e0e\u67b6\u6784<\/h3>\n

1. \u67b6\u6784\u56fe<\/h4>\n

+————+ +———————+
\n| Application | \u2192 | Memcached Client | \u2192 \u8def\u7531（\u4e00\u81f4\u6027\u54c8\u5e0c）
\n+————+ +———————+
\n \u2193
\n +———–+ +———–+ +———–+
\n | Node 1 | | Node 2 | | Node 3 |
\n | (10.0.0.1)| | (10.0.0.2)| | (10.0.0.3)|
\n +———–+ +———–+ +———–+<\/p>\n

    \n
  • \u5ba2\u6237\u7aef\u8d1f\u8d23\u8def\u7531：\u6839\u636e key \u7684\u54c8\u5e0c\u503c\u9009\u62e9\u76ee\u6807\u8282\u70b9<\/li>\n
  • \u670d\u52a1\u7aef\u65e0\u96c6\u7fa4\u901a\u4fe1：\u5404\u8282\u70b9\u72ec\u7acb\u8fd0\u884c，\u4e0d\u4e92\u76f8\u901a\u4fe1（\u4e0e Redis Cluster \u4e0d\u540c）<\/li>\n<\/ul>\n
    \n

    2. \u6570\u636e\u5b58\u50a8\u673a\u5236<\/h4>\n

    \u2705 Slab Allocation（ slab \u5206\u914d\u5668）<\/h5>\n

    Memcached \u4f7f\u7528 Slab Allocator \u7ba1\u7406\u5185\u5b58，\u907f\u514d\u5185\u5b58\u788e\u7247\u3002<\/p>\n

    \u5de5\u4f5c\u6d41\u7a0b：<\/h6>\n
  • \u5185\u5b58\u88ab\u5212\u5206\u4e3a\u591a\u4e2a Slab Class（\u6309\u5927\u5c0f\u5206\u7c7b）<\/li>\n
  • \u6bcf\u4e2a Slab Class \u5305\u542b\u591a\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684 Chunk<\/li>\n
  • \u5b58\u50a8\u6570\u636e\u65f6，\u9009\u62e9\u5408\u9002\u5927\u5c0f\u7684 Chunk<\/li>\n

    Slab 1: chunk_size=96B \u2192 \u5b58\u50a8 50B~96B \u7684\u6570\u636e
    \nSlab 2: chunk_size=128B \u2192 \u5b58\u50a8 97B~128B \u7684\u6570\u636e
    \n…<\/p>\n

    \u26a0\ufe0f \u7f3a\u70b9：\u5185\u5b58\u6d6a\u8d39（\u5982\u5b58 97B \u6570\u636e\u4f1a\u5360\u7528 128B）<\/p>\n

    \n

    3. \u8fc7\u671f\u4e0e\u6dd8\u6c70\u673a\u5236<\/h4>\n

    \u2705 \u8fc7\u671f（Expiration）<\/h5>\n
      \n
    • \u652f\u6301\u8bbe\u7f6e TTL（\u79d2\u7ea7）<\/li>\n
    • \u8fc7\u671f\u662f\u60f0\u6027\u5220\u9664：get \u65f6\u68c0\u67e5\u662f\u5426\u8fc7\u671f<\/li>\n
    • \u4e5f\u53ef\u901a\u8fc7 LRU crawler \u4e3b\u52a8\u6e05\u7406<\/li>\n<\/ul>\n

      set<\/span> mykey 0<\/span> 3600<\/span> 6<\/span> # 3600\u79d2\u540e\u8fc7\u671f，value\u957f\u5ea66<\/span>
      \nvalue data<\/p>\n

      \u2705 \u6dd8\u6c70（Eviction）<\/h5>\n
        \n
      • \u4f7f\u7528 LRU（Least Recently Used） \u7b56\u7565<\/li>\n
      • \u5f53\u5185\u5b58\u4e0d\u8db3\u65f6，\u6dd8\u6c70\u6700\u4e45\u672a\u4f7f\u7528\u7684\u6570\u636e<\/li>\n
      • \u53ef\u914d\u7f6e maxmemory \u9650\u5236\u5185\u5b58\u4f7f\u7528<\/li>\n<\/ul>\n
        \n

        \u56db\u3001Memcached vs Redis \u5bf9\u6bd4<\/h3>\n\n\u7279\u6027MemcachedRedis<\/tr>\n\n\n\n\n\n\n\n\n\n\n
        📦 \u6570\u636e\u7ed3\u6784<\/td>\n\u4ec5 String<\/td>\nString, Hash, List, Set, ZSet, Stream \u7b49<\/td>\n<\/tr>\n
        💾 \u6301\u4e45\u5316<\/td>\n\u274c \u4e0d\u652f\u6301<\/td>\n\u2705 RDB\/AOF<\/td>\n<\/tr>\n
        🔐 \u591a\u7ebf\u7a0b<\/td>\n\u2705 \u652f\u6301<\/td>\n\u274c \u5355\u7ebf\u7a0b（\u547d\u4ee4\u5904\u7406）<\/td>\n<\/tr>\n
        🌐 \u5206\u5e03\u5f0f<\/td>\n\u5ba2\u6237\u7aef\u5206\u7247<\/td>\n\u652f\u6301 Cluster \u6a21\u5f0f<\/td>\n<\/tr>\n
        🧩 \u539f\u5b50\u64cd\u4f5c<\/td>\n\u2705 incr\/decr<\/td>\n\u2705 \u66f4\u4e30\u5bcc\u7684\u539f\u5b50\u547d\u4ee4<\/td>\n<\/tr>\n
        🧠 \u5185\u5b58\u7ba1\u7406<\/td>\nSlab Allocation<\/td>\n\u52a8\u6001\u5206\u914d + LRU<\/td>\n<\/tr>\n
        📏 Value \u5927\u5c0f<\/td>\n\u2264 1MB<\/td>\n\u2264 512MB<\/td>\n<\/tr>\n
        🔄 \u6570\u636e\u6dd8\u6c70<\/td>\nLRU<\/td>\n\u652f\u6301\u591a\u79cd\u7b56\u7565（LRU, LFU, TTL）<\/td>\n<\/tr>\n
        🧰 \u7528\u9014<\/td>\n\u7eaf\u7f13\u5b58<\/td>\n\u7f13\u5b58\u3001\u6d88\u606f\u961f\u5217\u3001\u5206\u5e03\u5f0f\u9501\u3001\u5b9e\u65f6\u8ba1\u7b97\u7b49<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u2705 \u9009\u62e9\u5efa\u8bae：<\/p>\n

          \n
        • \u7eaf\u7f13\u5b58\u3001\u9ad8\u5e76\u53d1\u8bfb \u2192 Memcached<\/li>\n
        • \u591a\u529f\u80fd\u3001\u9700\u6301\u4e45\u5316\u3001\u590d\u6742\u6570\u636e\u7ed3\u6784 \u2192 Redis<\/li>\n<\/ul>\n
          \n

          \u4e94\u3001\u5b89\u88c5\u4e0e\u914d\u7f6e（\u4ee5 Linux \u4e3a\u4f8b）<\/h3>\n

          1. \u5b89\u88c5<\/h4>\n

          # Ubuntu\/Debian<\/span>
          \nsudo<\/span> apt-get<\/span> install<\/span> memcached<\/p>\n

          # CentOS\/RHEL<\/span>
          \nsudo<\/span> yum install<\/span> memcached
          \n# \u6216\u4f7f\u7528 dnf<\/span>
          \nsudo<\/span> dnf install<\/span> memcached<\/p>\n

          2. \u542f\u52a8\u670d\u52a1<\/h4>\n

          # \u57fa\u672c\u542f\u52a8<\/span>
          \nmemcached -d<\/span> -m<\/span> 64<\/span> -p<\/span> 11211<\/span> -u<\/span> nobody<\/p>\n

          # \u53c2\u6570\u8bf4\u660e：<\/span>
          \n# -d: \u5b88\u62a4\u8fdb\u7a0b<\/span>
          \n# -m: \u5185\u5b58\u5927\u5c0f（MB）<\/span>
          \n# -p: \u7aef\u53e3<\/span>
          \n# -u: \u8fd0\u884c\u7528\u6237<\/span>
          \n# -c: \u6700\u5927\u8fde\u63a5\u6570<\/span>
          \n# -t: \u7ebf\u7a0b\u6570（\u63d0\u5347\u5e76\u53d1）<\/span><\/p>\n

          3. \u914d\u7f6e\u6587\u4ef6（\u53ef\u9009）<\/h4>\n

          \u901a\u5e38\u901a\u8fc7\u547d\u4ee4\u884c\u53c2\u6570\u914d\u7f6e，\u4e5f\u53ef\u4f7f\u7528 \/etc\/memcached.conf<\/p>\n

          \n

          \u516d\u3001\u5ba2\u6237\u7aef\u4f7f\u7528\u793a\u4f8b（Python）<\/h3>\n

          1. \u5b89\u88c5\u5ba2\u6237\u7aef<\/h4>\n

          pip install<\/span> python-memcached<\/p>\n

          2. \u57fa\u672c\u64cd\u4f5c<\/h4>\n

          import<\/span> memcache<\/p>\n

          # \u8fde\u63a5\u591a\u4e2a\u8282\u70b9（\u5ba2\u6237\u7aef\u81ea\u52a8\u5206\u7247）<\/span>
          \nmc =<\/span> memcache.<\/span>Client(<\/span>[<\/span>'10.0.0.1:11211'<\/span>,<\/span> '10.0.0.2:11211'<\/span>]<\/span>,<\/span> debug=<\/span>0<\/span>)<\/span><\/p>\n

          # \u8bbe\u7f6e\u7f13\u5b58（key, value, expire）<\/span>
          \nmc.<\/span>set<\/span>(<\/span>"user:1001"<\/span>,<\/span> "{'name': 'Alice'}"<\/span>,<\/span> 3600<\/span>)<\/span><\/p>\n

          # \u83b7\u53d6\u7f13\u5b58<\/span>
          \ndata =<\/span> mc.<\/span>get(<\/span>"user:1001"<\/span>)<\/span>
          \nprint<\/span>(<\/span>data)<\/span><\/p>\n

          # \u5220\u9664<\/span>
          \nmc.<\/span>delete(<\/span>"user:1001"<\/span>)<\/span><\/p>\n

          # \u539f\u5b50\u589e\u51cf（\u9002\u7528\u4e8e\u8ba1\u6570\u5668）<\/span>
          \nmc.<\/span>incr(<\/span>"counter:page_view"<\/span>,<\/span> 1<\/span>)<\/span>
          \nmc.<\/span>decr(<\/span>"counter:stock"<\/span>,<\/span> 1<\/span>)<\/span><\/p>\n

          \n

          \u4e03\u3001\u5178\u578b\u5e94\u7528\u573a\u666f<\/h3>\n

          1. \u6570\u636e\u5e93\u67e5\u8be2\u7f13\u5b58<\/h4>\n

          data =<\/span> mc.<\/span>get(<\/span>"sql:select_user_1001"<\/span>)<\/span>
          \nif<\/span> not<\/span> data:<\/span>
          \n data =<\/span> db.<\/span>query(<\/span>"SELECT * FROM users WHERE id=1001"<\/span>)<\/span>
          \n mc.<\/span>set<\/span>(<\/span>"sql:select_user_1001"<\/span>,<\/span> data,<\/span> 600<\/span>)<\/span> # \u7f13\u5b5810\u5206\u949f<\/span><\/p>\n

          2. \u4f1a\u8bdd\u5b58\u50a8（Session）<\/h4>\n

          session =<\/span> mc.<\/span>get(<\/span>f"session:<\/span>{<\/span>token}<\/span><\/span>"<\/span><\/span>)<\/span>
          \nif<\/span> session:<\/span>
          \n login_user(<\/span>session[<\/span>'user_id'<\/span>]<\/span>)<\/span><\/p>\n

          3. \u9875\u9762\u7247\u6bb5\u7f13\u5b58<\/h4>\n

          html =<\/span> mc.<\/span>get(<\/span>"fragment:sidebar"<\/span>)<\/span>
          \nif<\/span> not<\/span> html:<\/span>
          \n html =<\/span> render_sidebar(<\/span>)<\/span>
          \n mc.<\/span>set<\/span>(<\/span>"fragment:sidebar"<\/span>,<\/span> html,<\/span> 1800<\/span>)<\/span><\/p>\n

          4. \u8ba1\u6570\u5668（\u539f\u5b50\u64cd\u4f5c）<\/h4>\n

          incr page:view:counter<\/p>\n

          \n

          \u516b\u3001Memcached \u7684\u5c40\u9650\u6027<\/h3>\n\n\u5c40\u9650\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n
          \u274c \u65e0\u6301\u4e45\u5316<\/td>\n\u91cd\u542f\u5373\u4e22\u6570\u636e，\u4e0d\u80fd\u505a\u6570\u636e\u5e93<\/td>\n<\/tr>\n
          \u274c \u65e0\u4e3b\u4ece\u590d\u5236<\/td>\n\u4e0d\u652f\u6301\u9ad8\u53ef\u7528\u81ea\u52a8\u6545\u969c\u8f6c\u79fb<\/td>\n<\/tr>\n
          \u274c \u65e0\u6570\u636e\u7ed3\u6784<\/td>\n\u65e0\u6cd5\u5b58\u50a8\u5bf9\u8c61\u3001\u5217\u8868\u7b49\u590d\u6742\u7ed3\u6784<\/td>\n<\/tr>\n
          \u274c \u65e0\u8ba4\u8bc1\u673a\u5236<\/td>\n\u9ed8\u8ba4\u65e0\u5bc6\u7801，\u9700\u9760\u7f51\u7edc\u9694\u79bb<\/td>\n<\/tr>\n
          \u274c \u6700\u5927 value 1MB<\/td>\n\u4e0d\u9002\u5408\u5927\u5bf9\u8c61\u7f13\u5b58<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          💡 \u6ce8\u610f：\u8fd9\u4e9b\u201c\u7f3a\u70b9\u201d\u4e5f\u662f\u5176\u201c\u7b80\u5355\u9ad8\u6548\u201d\u7684\u4ee3\u4ef7\u3002<\/p>\n

          \n

          \u4e5d\u3001\u6700\u4f73\u5b9e\u8df5\u5efa\u8bae<\/h3>\n\n\u5b9e\u8df5\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n\n\n
          \u2705 \u5408\u7406\u8bbe\u7f6e TTL<\/td>\n\u907f\u514d\u6570\u636e\u957f\u671f\u4e0d\u66f4\u65b0<\/td>\n<\/tr>\n
          \u2705 \u63a7\u5236 value \u5927\u5c0f<\/td>\n\u5c3d\u91cf < 100KB，\u907f\u514d\u7f51\u7edc\u963b\u585e<\/td>\n<\/tr>\n
          \u2705 \u4f7f\u7528\u8fde\u63a5\u6c60<\/td>\n\u51cf\u5c11\u8fde\u63a5\u5f00\u9500<\/td>\n<\/tr>\n
          \u2705 \u76d1\u63a7\u5185\u5b58\u4f7f\u7528<\/td>\n`echo \u201cstats\u201d<\/td>\n<\/tr>\n
          \u2705 \u907f\u514d\u7f13\u5b58\u96ea\u5d29<\/td>\n\u8bbe\u7f6e\u968f\u673a\u8fc7\u671f\u65f6\u95f4<\/td>\n<\/tr>\n
          \u2705 \u591a\u8282\u70b9\u90e8\u7f72<\/td>\n\u63d0\u5347\u5bb9\u91cf\u548c\u53ef\u7528\u6027<\/td>\n<\/tr>\n
          \u2705 \u7ed3\u5408 CDN\/\u672c\u5730\u7f13\u5b58<\/td>\n\u591a\u5c42\u7f13\u5b58\u67b6\u6784<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n

          \u5341\u3001\u8fd0\u7ef4\u5e38\u7528\u547d\u4ee4（\u901a\u8fc7 telnet \u6216 nc）<\/h3>\n

          # \u8fde\u63a5<\/span>
          \ntelnet 127.0<\/span>.0.1 11211<\/span><\/p>\n

          # \u67e5\u770b\u72b6\u6001<\/span>
          \nstats<\/p>\n

          # \u67e5\u770b\u5185\u5b58\u7edf\u8ba1<\/span>
          \nstats items<\/p>\n

          # \u6e05\u7a7a\u6240\u6709\u7f13\u5b58<\/span>
          \nflush_all<\/p>\n

          # \u9000\u51fa<\/span>
          \nquit<\/p>\n

          📌 stats \u8f93\u51fa\u5173\u952e\u5b57\u6bb5：<\/p>\n

            \n
          • curr_items: \u5f53\u524d item \u6570\u91cf<\/li>\n
          • bytes: \u5df2\u4f7f\u7528\u5185\u5b58<\/li>\n
          • get_hits \/ get_misses: \u547d\u4e2d\u7387<\/li>\n
          • evictions: \u88ab\u6dd8\u6c70\u6b21\u6570（\u8d8a\u5927\u8bf4\u660e\u5185\u5b58\u4e0d\u8db3）<\/li>\n<\/ul>\n
            \n

            \u5341\u4e00\u3001\u603b\u7ed3：Memcached \u7684\u9002\u7528\u573a\u666f<\/h3>\n

            \u2705 \u9002\u5408\u4f7f\u7528 Memcached \u7684\u573a\u666f：<\/p>\n

              \n
            • \u7eaf\u7f13\u5b58\u52a0\u901f（\u5982\u6570\u636e\u5e93\u67e5\u8be2\u7ed3\u679c）<\/li>\n
            • \u9ad8\u5e76\u53d1\u8bfb\u3001\u4f4e\u5e76\u53d1\u5199\u7684\u573a\u666f<\/li>\n
            • \u5bf9\u5ef6\u8fdf\u6781\u5ea6\u654f\u611f\u7684\u5e94\u7528<\/li>\n
            • \u5df2\u6709\u6210\u719f\u4e00\u81f4\u6027\u54c8\u5e0c\u8def\u7531\u7684\u7cfb\u7edf<\/li>\n<\/ul>\n

              \u274c \u4e0d\u9002\u5408\u7684\u573a\u666f：<\/p>\n

                \n
              • \u9700\u8981\u6301\u4e45\u5316\u7684\u6570\u636e<\/li>\n
              • \u9700\u8981\u590d\u6742\u6570\u636e\u7ed3\u6784（\u5982\u6392\u884c\u699c）<\/li>\n
              • \u9700\u8981\u5206\u5e03\u5f0f\u9501\u3001\u6d88\u606f\u961f\u5217\u7b49\u529f\u80fd<\/li>\n
              • \u8981\u6c42\u9ad8\u53ef\u7528\u81ea\u52a8\u6545\u969c\u8f6c\u79fb<\/li>\n<\/ul>\n
                \n

                \u2705 \u7ed3\u8bed：
                \nMemcached \u867d\u7136\u201c\u53e4\u8001\u201d，\u4f46\u5176 \u7b80\u5355\u3001\u7a33\u5b9a\u3001\u9ad8\u6548 \u7684\u8bbe\u8ba1\u54f2\u5b66，\u4f7f\u5176\u5728\u7279\u5b9a\u573a\u666f\u4e0b\u4f9d\u7136\u4e0d\u53ef\u66ff\u4ee3\u3002\u7406\u89e3\u5b83\u7684\u5b9a\u4f4d\u4e0e\u9650\u5236，\u624d\u80fd\u5728\u6280\u672f\u9009\u578b\u4e2d\u505a\u51fa\u6b63\u786e\u51b3\u7b56\u3002<\/p>\n

                🔗 \u63a8\u8350\u7ec4\u5408：
                \nMemcached（\u7f13\u5b58\u5c42） + MySQL（\u6301\u4e45\u5c42） + Redis（\u529f\u80fd\u5c42） = \u5b8c\u6574\u7684\u73b0\u4ee3 Web \u67b6\u6784\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb173\u6b21\u3002Memcached\u662f\u4e00\u6b3e\u9ad8\u6027\u80fd\u5206\u5e03\u5f0f\u5185\u5b58\u7f13\u5b58\u7cfb\u7edf\uff0c\u4e13\u4e3a\u52a0\u901fWeb\u5e94\u7528\u800c\u8bbe\u8ba1\u3002\u672c\u6587\u5168\u9762\u89e3\u6790\u4e86Memcached\u7684\u6838\u5fc3\u7279\u6027\u3001\u5de5\u4f5c\u539f\u7406\u53ca\u6700\u4f73\u5b9e\u8df5\u3002 \u6838\u5fc3\u8981\u70b9\uff1a \u7eaf\u5185\u5b58KV\u5b58\u50a8\uff0c\u652f\u6301\u5206\u5e03\u5f0f\u67b6\u6784\u4f46\u4e0d\u6301\u4e45\u5316 \u91c7\u7528Slab\u5206\u914d\u5668\u7ba1\u7406\u5185\u5b58\uff0cLRU\u81ea\u52a8\u6dd8\u6c70\u673a\u5236 \u76f8\u6bd4Redis\u66f4\u8f7b\u91cf\uff0c\u9002\u5408\u7eaf\u7f13\u5b58\u573a\u666f \u5178\u578b\u5e94\u7528\u5305\u62ec\u6570\u636e\u5e93\u67e5\u8be2\u7f13\u5b58\u3001\u4f1a\u8bdd\u5b58\u50a8\u7b49 \u63d0\u4f9bPython\u7b49\u8bed\u8a00\u5ba2\u6237\u7aef\u652f\u6301 \u8fd0\u7ef4\u5efa\u8bae\u63a7\u5236value\u5927\u5c0f\u3001\u8bbe\u7f6e\u5408\u7406TTL\u3001\u591a\u8282\u70b9\u90e8\u7f72\u7b49\u3002Memcached\u9002\u5408\u9ad8\u5e76\u53d1\u8bfb\u573a\u666f\uff0c\u4f46\u4e0d\u652f\u6301\u590d\u6742\u6570\u636e\u7ed3\u6784\u548c\u6301\u4e45\u5316\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2142,2563,664,398],"topic":[],"class_list":["post-56924","post","type-post","status-publish","format-standard","hentry","category-server","tag-memcached","tag-nosql","tag-664","tag-398"],"yoast_head":"\nMemcached \u8be6\u89e3\uff1a\u9ad8\u6027\u80fd\u5206\u5e03\u5f0f\u5185\u5b58\u7f13\u5b58\u7cfb\u7edf - 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