{"id":10008374,"date":"2024-02-20T19:47:40","date_gmt":"2024-02-20T11:47:40","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008374"},"modified":"2024-02-20T19:47:40","modified_gmt":"2024-02-20T11:47:40","slug":"%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9a%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e5%a4%9a%e7%ba%a7%e7%bc%93%e5%ad%98%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008374","title":{"rendered":"\u9762\u8bd5\u5b98\uff1a\u5982\u4f55\u5b9e\u73b0\u591a\u7ea7\u7f13\u5b58\uff1f"},"content":{"rendered":"

\u5bf9\u4e8e\u9ad8\u5e76\u53d1\u7cfb\u7edf\u6765\u8bf4\uff0c\u6709\u4e09\u4e2a\u91cd\u8981\u7684\u673a\u5236\u6765\u4fdd\u969c\u5176\u9ad8\u6548\u8fd0\u884c\uff0c\u5b83\u4eec\u5206\u522b\u662f\uff1a\u7f13\u5b58\u3001\u9650\u6d41\u548c\u7194\u65ad<\/strong>\u3002\u800c\u7f13\u5b58\u662f\u6392\u5728\u6700\u524d\u9762\u4e5f\u662f\u9ad8\u5e76\u53d1\u7cfb\u7edf\u4e4b\u6240\u4ee5\u9ad8\u6548\u8fd0\u884c\u7684\u5173\u952e\u624b\u6bb5\uff0c\u90a3\u4e48\u95ee\u9898\u6765\u4e86\uff1a\u7f13\u5b58\u53ea\u4f7f\u7528 Redis \u5c31\u591f\u4e86\u5417\uff1f<\/p>\n

1.\u5197\u4f59\u8bbe\u8ba1\u7406\u5ff5<\/h2>\n

\u5f53\u7136\u4e0d\u662f\uff0c\u4e0d\u8981\u628a\u6240\u6709\u9e21\u86cb\u653e\u5230\u4e00\u4e2a\u7bee\u5b50\u91cc\uff0c\u6210\u719f\u7684\u7cfb\u7edf\u5728\u5173\u952e\u529f\u80fd\u5b9e\u73b0\u65f6\u4e00\u5b9a\u4f1a\u8003\u8651\u5197\u4f59\u8bbe\u8ba1\uff0c\u6ce8\u610f\u8fd9\u91cc\u7684\u5197\u4f59\u8bbe\u8ba1\u4e0d\u662f\u8d2c\u4e49\u8bcd\u3002<\/p>\n

\u5197\u4f59\u8bbe\u8ba1\u662f\u5728\u7cfb\u7edf\u6216\u8bbe\u5907\u5b8c\u6210\u4efb\u52a1\u8d77\u5173\u952e\u4f5c\u7528\u7684\u5730\u65b9<\/strong>\uff0c\u589e\u52a0\u4e00\u5957\u4ee5\u4e0a\u5b8c\u6210\u76f8\u540c\u529f\u80fd\u7684\u529f\u80fd\u901a\u9053\uff08or \u7cfb\u7edf\uff09\u3001\u5de5\u4f5c\u5143\u4ef6\u6216\u90e8\u4ef6\uff0c\u4ee5\u4fdd\u8bc1\u5f53\u8be5\u90e8\u5206\u51fa\u73b0\u6545\u969c\u65f6\uff0c\u7cfb\u7edf\u6216\u8bbe\u5907\u4ecd\u80fd\u6b63\u5e38\u5de5\u4f5c\uff0c\u4ee5\u51cf\u5c11\u7cfb\u7edf\u6216\u8005\u8bbe\u5907\u7684\u6545\u969c\u6982\u7387\uff0c\u63d0\u9ad8\u7cfb\u7edf\u53ef\u9760\u6027\u3002<\/p><\/blockquote>\n

\u4f8b\u5982\uff0c\u98de\u673a\u7684\u8bbe\u8ba1\uff0c\u98de\u673a\u6b63\u5e38\u8fd0\u884c\u53ea\u9700\u8981\u4e24\u4e2a\u53d1\u52a8\u673a\uff0c\u4f46\u5728\u6bcf\u53f0\u98de\u673a\u7684\u8bbe\u8ba1\u4e2d\u53ef\u80fd\u81f3\u5c11\u4f1a\u8bbe\u8ba1\u56db\u4e2a\u53d1\u52a8\u673a\uff0c\u8fd9\u5c31\u6709\u5197\u4f59\u8bbe\u8ba1\u7684\u5178\u578b\u4f7f\u7528\u573a\u666f\uff0c\u8fd9\u6837\u8bbe\u8ba1\u7684\u76ee\u7684\u662f\u4e3a\u4e86\u4fdd\u8bc1\u6781\u7aef\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u6709\u4e00\u4e2a\u6216\u4e24\u4e2a\u53d1\u52a8\u673a\u51fa\u73b0\u6545\u969c\uff0c\u4e0d\u4f1a\u56e0\u4e3a\u67d0\u4e2a\u53d1\u52a8\u673a\u7684\u6545\u969c\u800c\u5f15\u8d77\u91cd\u5927\u7684\u5b89\u5168\u4e8b\u6545\u3002<\/p>\n

2.\u591a\u7ea7\u7f13\u5b58\u6982\u8ff0<\/h2>\n

\u7f13\u5b58\u529f\u80fd\u7684\u8bbe\u8ba1\u4e5f\u662f\u4e00\u6837\uff0c\u6211\u4eec\u5728\u9ad8\u5e76\u53d1\u7cfb\u7edf\u4e2d\u901a\u5e38\u4f1a\u4f7f\u7528\u591a\u7ea7\u7f13\u5b58\u6765\u4fdd\u8bc1\u5176\u9ad8\u6548\u8fd0\u884c\uff0c\u5176\u4e2d\u7684\u591a\u7ea7\u7f13\u5b58\u5c31\u5305\u542b\u4ee5\u4e0b\u8fd9\u4e9b\uff1a<\/p>\n

    \n
  1. \u6d4f\u89c8\u5668\u7f13\u5b58<\/strong>\uff1a\u5b83\u7684\u5b9e\u73b0\u4e3b\u8981\u4f9d\u9760 HTTP \u534f\u8bae\u4e2d\u7684\u7f13\u5b58\u673a\u5236\uff0c\u5f53\u6d4f\u89c8\u5668\u7b2c\u4e00\u6b21\u8bf7\u6c42\u4e00\u4e2a\u8d44\u6e90\u65f6\uff0c\u670d\u52a1\u5668\u4f1a\u5c06\u8be5\u8d44\u6e90\u7684\u76f8\u5173\u7f13\u5b58\u89c4\u5219\uff08\u5982 Cache-Control\u3001Expires \u7b49\uff09\u4e00\u540c\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\uff0c\u6d4f\u89c8\u5668\u4f1a\u6839\u636e\u8fd9\u4e9b\u89c4\u5219\u6765\u5224\u65ad\u662f\u5426\u9700\u8981\u7f13\u5b58\u8be5\u8d44\u6e90\u4ee5\u53ca\u8be5\u8d44\u6e90\u7684\u6709\u6548\u671f\u3002<\/li>\n
  2. Nginx \u7f13\u5b58<\/strong>\uff1a\u5728 Nginx \u4e2d\u914d\u7f6e\u4e2d\u5f00\u542f\u7f13\u5b58\u529f\u80fd\u3002<\/li>\n
  3. \u5206\u5e03\u5f0f\u7f13\u5b58<\/strong>\uff1a\u6240\u6709\u7cfb\u7edf\u8c03\u7528\u7684\u4e2d\u95f4\u4ef6\u90fd\u662f\u5206\u5e03\u5f0f\u7f13\u5b58\uff0c\u5982 Redis\u3001MemCached \u7b49\u3002<\/li>\n
  4. \u672c\u5730\u7f13\u5b58<\/strong>\uff1aJVM \u5c42\u9762\uff0c\u5355\u7cfb\u7edf\u8fd0\u884c\u671f\u95f4\u5728\u5185\u5b58\u4e2d\u4ea7\u751f\u7684\u7f13\u5b58\uff0c\u4f8b\u5982 Caffeine\u3001Google Guava \u7b49\u3002<\/li>\n<\/ol>\n

    \u4ee5\u4e0b\u662f\u5b83\u4eec\u7684\u5177\u4f53\u4f7f\u7528\u3002<\/p>\n

    2.1 \u5f00\u542f\u6d4f\u89c8\u5668\u7f13\u5b58<\/h3>\n

    \u5728 Java Web\u5e94\u7528\u4e2d\uff0c\u5b9e\u73b0\u6d4f\u89c8\u5668\u7f13\u5b58\u53ef\u4ee5\u4f7f\u7528 HttpServletResponse \u5bf9\u8c61\u6765\u8bbe\u7f6e\u4e0e\u7f13\u5b58\u76f8\u5173\u7684\u54cd\u5e94\u5934\uff0c\u4ee5\u5f00\u542f\u6d4f\u89c8\u5668\u7684\u7f13\u5b58\u529f\u80fd\uff0c\u5b83\u7684\u5177\u4f53\u5b9e\u73b0\u5206\u4e3a\u4ee5\u4e0b\u51e0\u6b65\u3002<\/p>\n

    \u2460 \u914d\u7f6e Cache-Control<\/h4>\n

    Cache-Control \u662f HTTP\/1.1 \u4e2d\u7528\u4e8e\u63a7\u5236\u7f13\u5b58\u7b56\u7565\u7684\u4e3b\u8981\u65b9\u5f0f\u3002\u5b83\u53ef\u4ee5\u8bbe\u7f6e\u591a\u4e2a\u6307\u4ee4\uff0c\u5982 max-age(\u5b9a\u4e49\u8d44\u6e90\u7684\u6700\u5927\u5b58\u6d3b\u65f6\u95f4\uff0c\u5355\u4f4d\u79d2)\u3001no-cache\uff08\u8981\u6c42\u91cd\u65b0\u9a8c\u8bc1\uff09\u3001public\uff08\u6307\u793a\u53ef\u4ee5\u88ab\u4efb\u4f55\u7f13\u5b58\u533a\u7f13\u5b58\uff09\u3001private\uff08\u53ea\u80fd\u88ab\u5355\u4e2a\u7528\u6237\u79c1\u6709\u7f13\u5b58\u5b58\u50a8\uff09\u7b49\uff0c\u8bbe\u7f6e\u5982\u4e0b\uff1a<\/p>\n

    response.setHeader("Cache-Control", "max-age=3600, public"); \/\/ \u7f13\u5b58\u4e00\u5c0f\u65f6<\/code><\/pre>\n
    \u2461 \u914d\u7f6e Expires<\/h4>\n
    \u8bbe\u7f6e\u4e00\u4e2a\u7edd\u5bf9\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u65f6\u95f4\u70b9\u540e\u6d4f\u89c8\u5668\u5c06\u4e0d\u518d\u4f7f\u7528\u7f13\u5b58\u7684\u5185\u5bb9\u800c\u5411\u670d\u52a1\u5668\u8bf7\u6c42\u65b0\u7684\u8d44\u6e90\uff0c\u8bbe\u7f6e\u5982\u4e0b\uff1a<\/p>\n
    response.setDateHeader("Expires", System.currentTimeMillis() + 3600 * 1000); \/\/ \u7f13\u5b58\u4e00\u5c0f\u65f6<\/code><\/pre>\n
    \u2462 \u914d\u7f6e ETag<\/h4>\n
    ETag\uff08\u5b9e\u4f53\u6807\u7b7e\uff09\u4e00\u79cd\u9a8c\u8bc1\u673a\u5236\uff0c\u5b83\u4e3a\u6bcf\u4e2a\u7248\u672c\u7684\u8d44\u6e90\u751f\u6210\u4e00\u4e2a\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u5f53\u5ba2\u6237\u7aef\u53d1\u8d77\u8bf7\u6c42\u65f6\uff0c\u4f1a\u643a\u5e26\u4e0a\u5148\u524d\u63a5\u6536\u5230\u7684 ETag\uff0c\u670d\u52a1\u5668\u6839\u636e ETag \u5224\u65ad\u8d44\u6e90\u662f\u5426\u5df2\u66f4\u65b0\uff0c\u82e5\u672a\u66f4\u65b0\u5219\u8fd4\u56de 304 Not Modified \u72b6\u6001\u7801\uff0c\u901a\u77e5\u6d4f\u89c8\u5668\u7ee7\u7eed\u4f7f\u7528\u672c\u5730\u7f13\u5b58\uff0c\u8bbe\u7f6e\u5982\u4e0b\uff1a<\/p>\n
    String etag = generateETagForContent(); \/\/ \u6839\u636e\u5185\u5bb9\u751f\u6210ETag\nresponse.setHeader("ETag", etag);<\/code><\/pre>\n
    \u2463 \u914d\u7f6e Last-Modified<\/h4>\n
    \u6307\u5b9a\u8d44\u6e90\u6700\u540e\u4fee\u6539\u7684\u65f6\u95f4\u6233\uff0c\u6d4f\u89c8\u5668\u4e0b\u6b21\u8bf7\u6c42\u65f6\u4f1a\u5e26\u4e0a If-Modified-Since \u5934\uff0c\u670d\u52a1\u5668\u5bf9\u6bd4\u65f6\u95f4\u6233\u51b3\u5b9a\u662f\u5426\u8fd4\u56de\u65b0\u5185\u5bb9\u6216\u53d1\u9001 304 \u72b6\u6001\u7801\uff0c\u8bbe\u7f6e\u5982\u4e0b\uff1a<\/p>\n
    long lastModifiedDate = getLastModifiedDate();\nresponse.setDateHeader("Last-Modified", lastModifiedDate);<\/code><\/pre>\n
    \u6574\u4f53\u914d\u7f6e<\/h4>\n
    \u5728 Spring Web \u6846\u67b6\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7 HttpServletResponse \u5bf9\u8c61\u6765\u8bbe\u7f6e\u8fd9\u4e9b\u5934\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u5728\u8fc7\u6ee4\u5668\u4e2d\u8bbe\u7f6e\u54cd\u5e94\u5934\u4ee5\u542f\u7528\u7f13\u5b58\uff1a<\/p>\n
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)\n       throws IOException, ServletException {\n   HttpServletResponse httpResponse = (HttpServletResponse) response;\n   \/\/ \u8bbe\u7f6e\u7f13\u5b58\u7b56\u7565\n   httpResponse.setHeader("Cache-Control", "max-age=3600");\n\n   \/\/ \u5176\u4ed6\u54cd\u5e94\u5934\u8bbe\u7f6e...\n   chain.doFilter(request, response);\n}<\/code><\/pre>\n
    \u4ee5\u4e0a\u5c31\u662f\u5728 Java Web \u5e94\u7528\u7a0b\u5e8f\u4e2d\u5229\u7528 HTTP \u534f\u8bae\u7279\u6027\u63a7\u5236\u6d4f\u89c8\u5668\u7f13\u5b58\u7684\u57fa\u672c\u65b9\u6cd5\u3002<\/p>\n
    2.2 \u5f00\u542f Nginx \u7f13\u5b58<\/h3>\n
    Nginx \u4e2d\u5f00\u542f\u7f13\u5b58\u7684\u914d\u7f6e\u603b\u5171\u6709\u4ee5\u4e0b 5 \u6b65\u3002<\/p>\n
    \u2460 \u5b9a\u4e49\u7f13\u5b58\u914d\u7f6e<\/h4>\n
    \u5728 Nginx \u914d\u7f6e\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u7f13\u5b58\u8def\u5f84\u548c\u914d\u7f6e\uff0c\u901a\u8fc7 proxy_cache_path \u6307\u4ee4\u5b8c\u6210\uff0c\u4f8b\u5982\uff0c\u4ee5\u4e0b\u914d\u7f6e\uff1a<\/p>\n
    proxy_cache_path \/path\/to\/cache levels=1:2 keys_zone=my_cache:10m max_size=10g inactive=60m use_temp_path=off;<\/code><\/pre>\n
    \u5176\u4e2d\uff1a<\/p>\n
      \n
    • \/path\/to\/cache\uff1a\u8fd9\u662f\u7f13\u5b58\u6587\u4ef6\u7684\u5b58\u653e\u8def\u5f84\u3002<\/li>\n
    • levels=1:2\uff1a\u5b9a\u4e49\u7f13\u5b58\u76ee\u5f55\u7684\u5c42\u7ea7\u7ed3\u6784\u3002<\/li>\n
    • keys_zone=my_cache:10m\uff1a\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3a my_cache<\/code> \u7684\u5171\u4eab\u5185\u5b58\u533a\u57df\uff0c\u5927\u5c0f\u4e3a 10MB\u3002<\/li>\n
    • max_size=10g\uff1a\u8bbe\u7f6e\u7f13\u5b58\u7684\u6700\u5927\u5927\u5c0f\u4e3a 10GB\u3002<\/li>\n
    • inactive=60m\uff1a\u5982\u679c\u5728 60 \u5206\u949f\u5185\u6ca1\u6709\u88ab\u8bbf\u95ee\uff0c\u7f13\u5b58\u5c06\u88ab\u6e05\u7406\u3002<\/li>\n
    • \n
      use_temp_path=off\uff1a\u907f\u514d\u5728\u6587\u4ef6\u7cfb\u7edf\u4e2d\u8fdb\u884c\u4e0d\u5fc5\u8981\u7684\u6570\u636e\u62f7\u8d1d\u3002<\/p>\n
      \u2461 \u542f\u7528\u7f13\u5b58<\/h4>\n
      \u5728 server \u6216 location \u5757\u4e2d\uff0c\u4f7f\u7528 proxy_cache \u6307\u4ee4\u6765\u542f\u7528\u7f13\u5b58\uff0c\u5e76\u6307\u5b9a\u8981\u4f7f\u7528\u7684 keys zone\uff0c\u4f8b\u5982\uff0c\u4ee5\u4e0b\u914d\u7f6e\uff1a<\/p>\n
      server {  \n  ...  \n  location \/ {  \n      proxy_cache my_cache;  \n      ...  \n  }  \n}<\/code><\/pre>\n
      \u2462 \u8bbe\u7f6e\u7f13\u5b58\u6709\u6548\u671f<\/h4>\n
      \u4f7f\u7528 proxy_cache_valid \u6307\u4ee4\u6765\u8bbe\u7f6e\u54ea\u4e9b\u54cd\u5e94\u7801\u7684\u7f13\u5b58\u65f6\u95f4\uff0c\u4f8b\u5982\uff0c\u4ee5\u4e0b\u914d\u7f6e\uff1a<\/p>\n
      location \/ {  \n  proxy_cache my_cache;  \n  proxy_cache_valid 200 304 12h;  \n  proxy_cache_valid any 1m;  \n  ...  \n}<\/code><\/pre>\n
      \u2463 \u914d\u7f6e\u53cd\u5411\u4ee3\u7406<\/h4>\n
      \u786e\u4fdd\u4f60\u5df2\u7ecf\u914d\u7f6e\u4e86\u53cd\u5411\u4ee3\u7406\uff0c\u4ee5\u4fbf Nginx \u53ef\u4ee5\u5c06\u8bf7\u6c42\u8f6c\u53d1\u5230\u540e\u7aef\u670d\u52a1\u5668\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u914d\u7f6e\uff1a<\/p>\n
      location \/ {  \n  proxy_pass http:\/\/backend_server;  \n  ...  \n}<\/code><\/pre>\n
      \u2464 \u91cd\u65b0\u52a0\u8f7d\u914d\u7f6e<\/h4>\n
      \u4fdd\u5b58\u5e76\u5173\u95ed Nginx \u914d\u7f6e\u6587\u4ef6\u540e\uff0c\u4f7f\u7528 nginx -s reload \u547d\u4ee4\u91cd\u65b0\u52a0\u8f7d\u914d\u7f6e\uff0c\u4f7f\u66f4\u6539\u751f\u6548\u3002<\/p>\n
      2.3 \u4f7f\u7528\u5206\u5e03\u5f0f\u7f13\u5b58<\/h3>\n
      \u5728 Spring Boot \u9879\u76ee\u4e2d\u4f7f\u7528\u6ce8\u89e3\u7684\u65b9\u5f0f\u6765\u64cd\u4f5c\u5206\u5e03\u5f0f\u7f13\u5b58 Redis \u7684\u5b9e\u73b0\u6b65\u9aa4\u5982\u4e0b\u3002<\/p>\n
      \u2460 \u6dfb\u52a0\u4f9d\u8d56<\/h4>\n
      \u5728\u4f60\u7684 pom.xml \u6587\u4ef6\u4e2d\u6dfb\u52a0 Spring Boot \u7684 Redis \u4f9d\u8d56\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
      <dependencies>  \n  <dependency>  \n      <groupId>org.springframework.boot<\/groupId>  \n      <artifactId>spring-boot-starter-data-redis<\/artifactId>  \n  <\/dependency>  \n<\/dependencies><\/code><\/pre>\n
      \u2461 \u914d\u7f6e Redis \u8fde\u63a5\u4fe1\u606f<\/h4>\n
      \u5728 application.properties \u6216 application.yml \u6587\u4ef6\u4e2d\u914d\u7f6e Redis \u7684\u76f8\u5173\u4fe1\u606f\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
      # application.properties  \nspring.redis.host=localhost  \nspring.redis.port=6379<\/code><\/pre>\n
      \u2462 \u542f\u52a8\u7f13\u5b58<\/h4>\n
      \u5728 Spring Boot \u4e3b\u7c7b\u6216\u8005\u914d\u7f6e\u7c7b\u4e0a\u6dfb\u52a0 @EnableCaching \u6ce8\u89e3\u6765\u542f\u7528\u7f13\u5b58\u3002<\/p>\n
      import org.springframework.cache.annotation.EnableCaching;  \nimport org.springframework.boot.SpringApplication;  \nimport org.springframework.boot.autoconfigure.SpringBootApplication;  \n\n@SpringBootApplication  \n@EnableCaching  \npublic class Application {  \n\n  public static void main(String[] args) {  \n      SpringApplication.run(Application.class, args);  \n  }  \n\n}<\/code><\/pre>\n
      \u2463 \u4f7f\u7528\u7f13\u5b58<\/h4>\n
      \u5728\u670d\u52a1\u7c7b\u6216\u65b9\u6cd5\u4e0a\u4f7f\u7528 @Cacheable\uff0c@CacheEvict\uff0c@CachePut \u7b49\u6ce8\u89e3\u6765\u5b9a\u4e49\u7f13\u5b58\u884c\u4e3a\u3002<\/p>\n<\/li>\n<\/ul>\n
      \u4f8b\u5982\uff0c\u4f7f\u7528 @Cacheable \u6ce8\u89e3\u6765\u7f13\u5b58\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\uff1a<\/p>\n
      import org.springframework.cache.annotation.Cacheable;  \nimport org.springframework.stereotype.Service;  \n  \n@Service  \npublic class UserService {  \n    @Cacheable("users")  \n    public User findUserById(Long id) {  \n        \/\/ \u6a21\u62df\u4ece\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u7528\u6237  \n        return new User(id, "Alice");  \n    }  \n}<\/code><\/pre>\n
      \u4e5f\u53ef\u4ee5\u4f7f\u7528 @CacheEvict \u6ce8\u89e3\u6765\u5220\u9664\u7f13\u5b58\uff1a<\/p>\n
      import org.springframework.cache.annotation.CacheEvict;  \nimport org.springframework.stereotype.Service;  \n  \n@Service  \npublic class UserService {  \n    @CacheEvict(value = "users", key = "#id")  \n    public void deleteUser(Long id) {  \n        \/\/ \u6a21\u62df\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u7528\u6237  \n    }  \n}<\/code><\/pre>\n
      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cdeleteUser \u65b9\u6cd5\u4f1a\u5220\u9664 “users” \u7f13\u5b58\u4e2d key \u4e3a id \u7684\u7f13\u5b58\u9879\u3002<\/p>\n
      \u53ef\u4ee5\u4f7f\u7528 @CachePut \u6ce8\u89e3\u6765\u66f4\u65b0\u7f13\u5b58\uff1a<\/p>\n
      import org.springframework.cache.annotation.CachePut;  \nimport org.springframework.stereotype.Service;  \n  \n@Service  \npublic class UserService {  \n  \n    @CachePut(value = "users", key = "#user.id")  \n    public User updateUser(User user) {  \n        \/\/ \u6a21\u62df\u66f4\u65b0\u6570\u636e\u5e93\u4e2d\u7684\u7528\u6237\u4fe1\u606f  \n        return user;  \n    }  \n  \n}<\/code><\/pre>\n
      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cupdateUser \u65b9\u6cd5\u4f1a\u66f4\u65b0 “users” \u7f13\u5b58\u4e2d key \u4e3a user.id \u7684\u7f13\u5b58\u9879\uff0c\u7f13\u5b58\u7684\u503c\u662f\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u3002<\/p>\n
      2.4 \u4f7f\u7528\u672c\u5730\u7f13\u5b58<\/h3>\n
      \u4ee5 Caffeine \u672c\u5730\u7f13\u5b58\u7684\u4f7f\u7528\u4e3a\u4f8b\uff0c\u5b83\u5728 Spring Boot \u9879\u76ee\u4e2d\u7684\u4f7f\u7528\u5982\u4e0b\u3002<\/p>\n
      \u2460 \u6dfb\u52a0\u4f9d\u8d56<\/h4>\n
      <dependency>\n    <groupId>org.springframework.boot<\/groupId>\n    <artifactId>spring-boot-starter-cache<\/artifactId>\n<\/dependency>\n<dependency>\n    <groupId>com.github.ben-manes.caffeine<\/groupId>\n    <artifactId>caffeine<\/artifactId>\n<\/dependency><\/code><\/pre>\n
      \u2461 \u914d\u7f6e Caffeine \u7f13\u5b58<\/h4>\n
      \u5728 application.properties \u6216 application.yml \u6587\u4ef6\u4e2d\u914d\u7f6e Caffeine \u7f13\u5b58\u7684\u76f8\u5173\u53c2\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n
      # application.properties\nspring.cache.type=caffeine\nspring.cache.caffeine.spec=initialCapacity=100,maximumSize=1000,expireAfterWrite=10s<\/code><\/pre>\n
      \u8fd9\u91cc spring.cache.caffeine.spec \u662f\u4e00\u4e2a Caffeine \u89c4\u8303\u5b57\u7b26\u4e32\uff0c\u7528\u4e8e\u8bbe\u7f6e\u521d\u59cb\u5bb9\u91cf\u3001\u6700\u5927\u5bb9\u91cf\u548c\u5199\u5165\u540e\u8fc7\u671f\u65f6\u95f4\u7b49\u7f13\u5b58\u7b56\u7565\uff0c\u5176\u4e2d\uff1a<\/p>\n