{"id":207433,"date":"2025-07-08T10:38:28","date_gmt":"2025-07-08T02:38:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207433\/"},"modified":"2025-07-08T10:38:28","modified_gmt":"2025-07-08T02:38:28","slug":"rabbitmq-%e6%b6%88%e8%b4%b9%e8%80%85%e6%80%a7%e8%83%bd-%e9%a2%84%e5%8f%96%e4%b8%8e%e5%b9%b6%e5%8f%91","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207433\/","title":{"rendered":"RabbitMQ \u6d88\u8d39\u8005\u6027\u80fd – \u9884\u53d6\u4e0e\u5e76\u53d1"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> RabbitMQ \u6d88\u8d39\u8005\u6027\u80fd – \u9884\u53d6\u4e0e\u5e76\u53d1<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-22 16:09:33<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u76ee\u524d\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8eGolang<\/span>\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587\u300aRabbitMQ \u6d88\u8d39\u8005\u6027\u80fd – \u9884\u53d6\u4e0e\u5e76\u53d1\u300b<\/span>\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60Golang<\/span>\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6709\u4e00\u4e2a go \u5e94\u7528\u7a0b\u5e8f\u5904\u7406\u6765\u81ea\u5355\u4e2a rabbitmq \u961f\u5217\u7684\u4e8b\u4ef6\u3002\u6211\u4f7f\u7528 github.com\/streadway\/amqp<\/code> rabbitmq \u5ba2\u6237\u7aef\u5e93\u3002<\/p>\n

go \u5e94\u7528\u7a0b\u5e8f\u5728\u5927\u7ea6 2-3 \u79d2\u5185\u5904\u7406\u6bcf\u6761\u6d88\u606f\u3002\u5982\u679c\u6211\u4ece\u5185\u5b58\u4e2d\u8f93\u5165\u6d88\u606f\uff0c\u5219\u53ef\u4ee5\u5e76\u884c\u5904\u7406\u5927\u7ea6 1000 \u6761\u751a\u81f3\u66f4\u591a\u6d88\u606f\u3002 \u4f46\u4e0d\u5e78\u7684\u662f\uff0crabbitmq \u7684\u6027\u80fd\u66f4\u5dee\u3002 \u6240\u4ee5\uff0c\u6211\u60f3\u66f4\u5feb\u5730\u6d88\u8d39\u961f\u5217\u4e2d\u7684\u6d88\u606f\u3002<\/p>\n

\u6240\u4ee5\uff0c\u95ee\u9898\u662f\uff1a\u5982\u4f55\u4f7f\u7528 github.com\/streadway\/amqp<\/code> \u4ee5\u6700\u6709\u6548\u7684\u65b9\u5f0f\u6d88\u8d39\u6d88\u606f\uff1f<\/p>\n

\u636e\u6211\u4e86\u89e3\uff0c\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n

    \n
  1. \n

    \u8bbe\u7f6e\u9ad8\u9884\u53d6<\/p>\n

    https:\/\/godoc.org\/github.com\/streadway\/amqp#channel.qos\u3002 <\/p>\n

    \u4f7f\u7528\u5355\u4e2a\u6d88\u8d39\u8005 goroutine<\/p>\n

    \u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/li>\n<\/ol>\n

    conn, err := amqp.dial(\"amqp:\/\/guest:guest@localhost:5672\/\")\nfailonerror(err, \"failed to connect to rabbitmq\")\ndefer conn.close()\n\nch, err := conn.channel()\nfailonerror(err, \"failed to open a channel\")\ndefer ch.close()\n\nch.qos(\n        10000,           \/\/ prefetch count\n        0,               \/\/ prefetch size\n        false,           \/\/ global\n    )\n\nmsgs, err := ch.consume(\n  q.name, \/\/ queue\n  \"\",     \/\/ consumer\n  false,  \/\/ no auto-ack\n  false,  \/\/ exclusive\n  false,  \/\/ no-local\n  false,  \/\/ no-wait\n  nil,    \/\/ args\n)\n\nfor d := range msgs {\n  log.printf(\"received a message: %s\", d.body)\n  err:= processmessage(d)\n  if err != nil {\n      log.printf(\"%s : while consuming task\", err)\n      d.nack(false, true)\n  } else {\n      d.ack(false)\n  }\n  continue \/\/ consume other messages\n}\n\n<\/pre>\n
    \u4f46\u662f processmessage<\/code> \u4f1a\u5728\u8fd9\u91cc\u5e76\u884c\u8c03\u7528\u5417\uff1f<\/p>\n
      \n
    1. \u4ea7\u751f\u8bb8\u591a\u6e20\u9053\u5e76\u4f7f\u7528\u591a\u4e2a\u6d88\u8d39\u8005<\/li>\n<\/ol>\n
      conn, err := amqp.Dial(\"amqp:\/\/guest:guest@localhost:5672\/\")\nfailOnError(err, \"Failed to connect to RabbitMQ\")\ndefer conn.Close()\nvar i = 0\nfor i = 0; i<=100; i++ {\n  go func(){\n      ch, err := conn.Channel()\n      failOnError(err, \"Failed to open a channel\")\n      defer ch.Close()\n\n      ch.Qos(\n            10,           \/\/ prefetch count\n            0,               \/\/ prefetch size\n            false,           \/\/ global\n    )\n\n      msgs, err := ch.Consume(\n        q.Name, \/\/ queue\n        \"\",     \/\/ consumer\n        false,  \/\/ NO auto-ack\n        false,  \/\/ exclusive\n        false,  \/\/ no-local\n        false,  \/\/ no-wait\n        nil,    \/\/ args\n      )\n\n      for d := range msgs {\n        log.Printf(\"Received a message: %s\", d.Body)\n        err:= processMessage(d)\n        if err != nil {\n            log.Printf(\"%s : while consuming task\", err)\n            d.Nack(false, true)\n        } else {\n            d.Ack(false)\n        }\n        continue \/\/ consume other messages\n      }\n  }()\n}\n<\/pre>\n
      \u4f46\u8fd9\u5bf9 ram \u53cb\u597d\u5417\uff1f\u5bf9\u4e8e rabbitmq \u6765\u8bf4\uff0c\u4e3a\u6bcf\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u751f\u6210\u4e00\u4e2a\u65b0\u901a\u9053\u4e0d\u662f\u5f88\u620f\u5267\u6027\u5417\uff1f<\/p>\n
      \u90a3\u4e48\uff0c\u95ee\u9898\u662f\uff0c\u54ea\u79cd\u53d8\u4f53\u66f4\u597d\uff1f\u66f4\u597d\u7684\u6027\u80fd\u3001\u66f4\u597d\u7684\u5185\u5b58\u4f7f\u7528\u7b49\u3002<\/p>\n
      \u90a3\u4e48\uff0crabbitmq \u7684\u6700\u4f73\u7528\u6cd5\u662f\u4ec0\u4e48\uff1f<\/p>\n
      \u66f4\u65b0\uff1a\u76ee\u524d\uff0c\u6211\u9047\u5230\u4e86\u4e00\u4e2a\u60c5\u51b5\uff0c\u6211\u7684\u5de5\u4f5c\u7ebf\u7a0b\u8017\u5c3d\u4e86 vps \u4e0a\u7684\u6240\u6709 ram\uff0c\u5e76\u4e14\u88ab oom \u6740\u6b7b\u3002\u6211\u4f7f\u7528\u4e86\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u3002\u56e0\u6b64\uff0c\u5c31\u6211\u800c\u8a00\uff0c\u66f4\u597d\u7684\u662f\u80fd\u591f\u8ba9\u6211\u7684\u5de5\u4f5c\u4eba\u5458\u5728\u5de5\u4f5c\u51e0\u5206\u949f\u540e\u4e0d\u4f1a\u88ab oom \u6740\u6b7b\u3002<\/p>\n
      \u66f4\u65b02\uff1a\u5f53worker\u5904\u7406\u6d88\u606f\u5931\u8d25\u65f6\u7684nack<\/code>\uff0c\u4ee5\u53ca\u5f53worker\u5904\u7406\u6d88\u606f\u65f6\u7684ack<\/code>\u975e\u5e38\u91cd\u8981\u3002\u6240\u6709\u6d88\u606f\u90fd\u5fc5\u987b\u88ab\u5904\u7406\uff08\u5176\u5ba2\u6237\u5206\u6790\uff09\uff0c\u4f46\u6709\u65f6\u5de5\u4f5c\u4eba\u5458\u65e0\u6cd5\u5904\u7406\u5b83\uff0c\u56e0\u6b64\u5b83\u5fc5\u987b nack<\/code> \u6d88\u606f\u5c06\u5176\u4f20\u9012\u7ed9\u5176\u4ed6\u5de5\u4f5c\u4eba\u5458\uff08\u76ee\u524d\uff0c\u4e00\u4e9b\u7528\u4e8e\u5904\u7406\u6d88\u606f\u7684\u7b2c 3 \u65b9 api \u6709\u65f6\u53ea\u662f\u8fd4\u56de 503 \u72b6\u6001\u4ee3\u7801\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u7684\u6d88\u606f\u5e94\u8be5\u4f20\u9012\u7ed9\u5176\u4ed6\u5de5\u4f5c\u4eba\u5458\u6216\u91cd\u8bd5\uff09\u3002 \u6240\u4ee5\uff0c\u4e0d\u5e78\u7684\u662f\uff0c\u4f7f\u7528 auto-ack<\/code> \u4e0d\u662f\u4e00\u4e2a\u9009\u62e9\u3002<\/p>\n
       <\/p>\n
      \u89e3\u51b3\u65b9\u6848<\/h2>\n
       <\/p>\n
      \u6211\u60f3\u6bcf\u4e2a processMessage()<\/code> \u90fd\u5728\u4e00\u4e2a\u65b0\u7684 goroutine \u4e2d\u8fd0\u884c\u3002<\/p>\n
      \u54ea\u79cd\u53d8\u4f53\u66f4\u597d\uff1f<\/p>\n
      \u6211\u66f4\u559c\u6b22\u7b2c\u4e00\u4e2a\uff0c\u56e0\u4e3a\u6253\u5f00\/\u5173\u95ed\u901a\u9053\u6709\u70b9\u6602\u8d35\uff082 + 2 TCP \u6570\u636e\u5305\uff09\u3002\u6211\u8ba4\u4e3a\u4f60\u7684 OOM \u95ee\u9898\u4e0e\u592a\u591a gorutine \u65e0\u5173\uff0cgorutine \u5f88\u8f7b\uff0c\u53ea\u9700\u8981 5KB \u5de6\u53f3\u3002\u6240\u4ee5\u95ee\u9898\u53ef\u80fd\u662f\u7531\u60a8\u7684 processMessage()<\/code> \u5f15\u8d77\u7684\u3002 <\/p>\n
      \u6211\u8ba4\u4e3a github.com\/streadway\/amqp<\/code> \u901a\u9053\u6d88\u8d39\u64cd\u4f5c\u662f \uff0c\u6240\u4ee5\u5982\u679c\u4f60\u53ea\u505a\u4e00\u4e9b\u6d88\u8d39\u64cd\u4f5c\uff0c\u90a3\u4e48\u5728 goruntine \u4e4b\u95f4\u5171\u4eab\u901a\u9053\u662f\u5b89\u5168\u7684\u3002<\/p>\n
      \u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aRabbitMQ \u6d88\u8d39\u8005\u6027\u80fd – \u9884\u53d6\u4e0e\u5e76\u53d1\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207433","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207433","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=207433"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207433\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}