{"id":201996,"date":"2025-05-10T12:18:46","date_gmt":"2025-05-10T04:18:46","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201996\/"},"modified":"2025-05-10T12:18:46","modified_gmt":"2025-05-10T04:18:46","slug":"%e4%bd%bf%e7%94%a8java%e5%92%8credis%e6%9e%84%e5%bb%ba%e5%ae%9e%e6%97%b6%e6%8a%a5%e8%ad%a6%e7%b3%bb%e7%bb%9f%ef%bc%9a%e5%a6%82%e4%bd%95%e7%9b%91%e6%8e%a7%e7%b3%bb%e7%bb%9f%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201996\/","title":{"rendered":"\u4f7f\u7528Java\u548cRedis\u6784\u5efa\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\uff1a\u5982\u4f55\u76d1\u63a7\u7cfb\u7edf\u6027\u80fd"},"content":{"rendered":"

<\/b> <\/p>\n

\u4f7f\u7528Java\u548cRedis\u6784\u5efa\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\uff1a\u5982\u4f55\u76d1\u63a7\u7cfb\u7edf\u6027\u80fd<\/h1>\n

\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728\u6570\u636e\u5e93\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300a\u4f7f\u7528Java\u548cRedis\u6784\u5efa\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\uff1a\u5982\u4f55\u76d1\u63a7\u7cfb\u7edf\u6027\u80fd\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n

\u4f7f\u7528Java\u548cRedis\u6784\u5efa\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\uff1a\u5982\u4f55\u76d1\u63a7\u7cfb\u7edf\u6027\u80fd<\/p>\n

\u5f15\u8a00\uff1a
\u968f\u7740\u6570\u5b57\u5316\u65f6\u4ee3\u7684\u5230\u6765\uff0c\u7cfb\u7edf\u6027\u80fd\u7684\u76d1\u63a7\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002\u4e3a\u4e86\u4fdd\u8bc1\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\uff0c\u6211\u4eec\u9700\u8981\u53ca\u65f6\u53d1\u73b0\u5f02\u5e38\uff0c\u5e76\u5bf9\u5176\u8fdb\u884c\u5904\u7406\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Java\u548cRedis\u6784\u5efa\u4e00\u4e2a\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\uff0c\u5e2e\u52a9\u6211\u4eec\u76d1\u63a7\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n

\u4e00\u3001Redis\u7b80\u4ecb\uff1a
Redis\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5185\u5b58\u6570\u636e\u7ed3\u6784\u5b58\u50a8\u7cfb\u7edf\uff0c\u5b83\u53ef\u4ee5\u7528\u4f5c\u6570\u636e\u5e93\u3001\u7f13\u5b58\u548c\u6d88\u606f\u4ee3\u7406\u3002Redis\u5177\u6709\u9ad8\u6027\u80fd\u3001\u9ad8\u53ef\u9760\u6027\u548c\u7b80\u5355\u6613\u7528\u7684\u7279\u70b9\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u3002<\/p>\n

\u4e8c\u3001\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\u8bbe\u8ba1\u601d\u8def\uff1a
\u6211\u4eec\u7684\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\u4e3b\u8981\u5305\u542b\u4e24\u90e8\u5206\u529f\u80fd\uff1a\u6027\u80fd\u6570\u636e\u91c7\u96c6\u548c\u5f02\u5e38\u62a5\u8b66\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u6bcf\u4e2a\u529f\u80fd\u7684\u5b9e\u73b0\u601d\u8def\u3002<\/p>\n

    \n
  1. \u6027\u80fd\u6570\u636e\u91c7\u96c6\uff1a
    \u4e3a\u4e86\u76d1\u63a7\u7cfb\u7edf\u7684\u6027\u80fd\uff0c\u6211\u4eec\u9700\u8981\u91c7\u96c6\u7cfb\u7edf\u7684\u8fd0\u884c\u72b6\u6001\u6570\u636e\u3002\u5e38\u89c1\u7684\u6027\u80fd\u6307\u6807\u5305\u62ecCPU\u5360\u7528\u7387\u3001\u5185\u5b58\u4f7f\u7528\u7387\u3001\u7f51\u7edc\u6d41\u91cf\u7b49\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Java\u7684\u76d1\u63a7\u5de5\u5177\u5982jstat\u3001jmap\u7b49\u91c7\u96c6\u8fd9\u4e9b\u6570\u636e\u3002\u7136\u540e\uff0c\u5c06\u91c7\u96c6\u5230\u7684\u6570\u636e\u5b58\u50a8\u5230Redis\u4e2d\uff0c\u4ee5\u4fbf\u540e\u7eed\u7684\u5904\u7406\u548c\u5206\u6790\u3002<\/li>\n<\/ol>\n

    \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684Java\u4ee3\u7801\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u901a\u8fc7jstat\u91c7\u96c6\u7cfb\u7edf\u7684CPU\u4f7f\u7528\u7387\uff1a<\/p>\n

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;<\/p>\n

    public class CPUUsageCollector {<\/p>\n

    public static double getCPUUsage() throws IOException {\n    Process process = Runtime.getRuntime().exec(\"jstat -gc <pid>\");\n    BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));\n    String line;\n    double cpuUsage = 0.0;\n    while ((line = reader.readLine()) != null) {\n        \/\/ \u89e3\u6790jstat\u547d\u4ee4\u8f93\u51fa\u7684\u6570\u636e\uff0c\u83b7\u53d6CPU\u4f7f\u7528\u7387\n        \/\/ ...\n    }\n    return cpuUsage;\n}<\/pre>\n
    }<\/p>\n
      \n
    1. \u5f02\u5e38\u62a5\u8b66\uff1a
      \u4e00\u65e6\u7cfb\u7edf\u7684\u6027\u80fd\u5f02\u5e38\uff0c\u6211\u4eec\u9700\u8981\u53ca\u65f6\u53d1\u51fa\u8b66\u62a5\u4ee5\u4fbf\u53ca\u65f6\u5904\u7406\u3002\u5728\u6211\u4eec\u7684\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\u4e2d\uff0c\u5f53\u67d0\u9879\u6027\u80fd\u6307\u6807\u8d85\u8fc7\u9884\u5b9a\u9608\u503c\u65f6\uff0c\u5c06\u901a\u8fc7\u77ed\u4fe1\u3001\u90ae\u4ef6\u6216\u8005\u5373\u65f6\u901a\u8baf\u5de5\u5177\u53d1\u9001\u62a5\u8b66\u4fe1\u606f\u7ed9\u76f8\u5173\u4eba\u5458\u3002\u4e3a\u4e86\u66f4\u597d\u5730\u7ba1\u7406\u62a5\u8b66\u89c4\u5219\u548c\u62a5\u8b66\u65b9\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5982Set\u548cHash\uff0c\u6765\u5b58\u50a8\u548c\u67e5\u8be2\u8fd9\u4e9b\u4fe1\u606f\u3002<\/li>\n<\/ol>\n
      \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684Java\u4ee3\u7801\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u6839\u636e\u7cfb\u7edf\u7684CPU\u4f7f\u7528\u7387\u53d1\u9001\u62a5\u8b66\u4fe1\u606f\uff1a<\/p>\n
      import redis.clients.jedis.Jedis;<\/p>\n
      public class AlertSender {<\/p>\n
      public static void sendAlert(String metric, double value) {\n    Jedis jedis = new Jedis(\"localhost\");\n    \/\/ \u6839\u636emetric\u83b7\u53d6\u5bf9\u5e94\u7684\u9608\u503c\uff0c\u6bd4\u8f83value\u548c\u9608\u503c\uff0c\u786e\u5b9a\u662f\u5426\u53d1\u9001\u62a5\u8b66\n    \/\/ ...\n    if (needToSendAlert) {\n        \/\/ \u53d1\u9001\u62a5\u8b66\u4fe1\u606f\n        \/\/ ...\n    }\n    jedis.close();\n}<\/pre>\n
      }<\/p>\n
      \u4e09\u3001\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\u7684\u5b9e\u73b0\uff1a
      \u5c06\u6027\u80fd\u6570\u636e\u91c7\u96c6\u548c\u5f02\u5e38\u62a5\u8b66\u7ed3\u5408\u8d77\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u4e00\u4e2a\u5b8c\u6574\u7684\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684Java\u4ee3\u7801\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u4f7f\u7528Redis\u548c\u4e0a\u8ff0\u7684\u6027\u80fd\u6570\u636e\u91c7\u96c6\u548c\u5f02\u5e38\u62a5\u8b66\u6a21\u5757\u6784\u5efa\u4e00\u4e2a\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\uff1a<\/p>\n
      import redis.clients.jedis.Jedis;<\/p>\n
      public class RealtimeAlertSystem {<\/p>\n
      public static void main(String[] args) {\n    Jedis jedis = new Jedis(\"localhost\");\n    while (true) {\n        try {\n            \/\/ \u91c7\u96c6\u7cfb\u7edf\u7684\u6027\u80fd\u6570\u636e\n            double cpuUsage = CPUUsageCollector.getCPUUsage();\n        \n            \/\/ \u5b58\u50a8\u6027\u80fd\u6570\u636e\u5230Redis\n            jedis.set(\"cpu\", String.valueOf(cpuUsage));\n        \n            \/\/ \u53d1\u9001\u62a5\u8b66\u4fe1\u606f\n            AlertSender.sendAlert(\"cpu\", cpuUsage);\n        \n            \/\/ \u6bcf\u96945\u79d2\u91c7\u96c6\u4e00\u6b21\u6570\u636e\n            Thread.sleep(5000);\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n    jedis.close();\n}<\/pre>\n
      }<\/p>\n
      \u7ed3\u8bba\uff1a
      \u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528Java\u548cRedis\u6784\u5efa\u4e00\u4e2a\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\u6765\u76d1\u63a7\u7cfb\u7edf\u7684\u6027\u80fd\u3002\u901a\u8fc7\u91c7\u96c6\u7cfb\u7edf\u7684\u6027\u80fd\u6570\u636e\uff0c\u5e76\u6839\u636e\u9884\u8bbe\u9608\u503c\u5224\u65ad\u662f\u5426\u53d1\u9001\u62a5\u8b66\u4fe1\u606f\uff0c\u6211\u4eec\u53ef\u4ee5\u53ca\u65f6\u53d1\u73b0\u5e76\u5904\u7406\u7cfb\u7edf\u6027\u80fd\u4e2d\u7684\u5f02\u5e38\u3002\u8fd9\u4e2a\u5b9e\u65f6\u62a5\u8b66\u7cfb\u7edf\u8fd8\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u6c42\u8fdb\u884c\u6269\u5c55\u548c\u4f18\u5316\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u7684\u76d1\u63a7\u9700\u6c42\u3002<\/p>\n
      \n
      \n <\/dt>\n
      \n   \u5982\u4f55\u4f7f\u7528Redis\u548cRuby\u5f00\u53d1\u7f13\u5b58\u66f4\u65b0\u4efb\u52a1\n <\/dd>\n<\/dl>\n
      \n
      \n <\/dt>\n
      \n   \u4f7f\u7528Python\u548cRedis\u6784\u5efa\u65e5\u5fd7\u5206\u6790\u7cfb\u7edf\uff1a\u5982\u4f55\u5b9e\u65f6\u76d1\u63a7\u7cfb\u7edf\u8fd0\u884c\u72b6\u51b5\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
      \u4f7f\u7528Java\u548cRedis\u6784\u5efa\u5b9e\u65f6...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-201996","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201996","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=201996"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201996\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}