{"id":10008341,"date":"2023-09-26T23:57:58","date_gmt":"2023-09-26T15:57:58","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008341"},"modified":"2023-09-26T23:57:58","modified_gmt":"2023-09-26T15:57:58","slug":"%e4%b8%93%e4%b8%ba%e5%b0%8f%e7%99%bd%e6%89%93%e9%80%a0-kafka%e4%b8%80%e7%af%87%e6%96%87%e7%ab%a0%e4%bb%8e%e5%85%a5%e9%97%a8%e5%88%b0%e5%85%a5%e5%9c%9f-%e4%ba%ac%e4%b8%9c%e4%ba%91%e6%8a%80","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008341","title":{"rendered":"\u4e13\u4e3a\u5c0f\u767d\u6253\u9020\u2014Kafka\u4e00\u7bc7\u6587\u7ae0\u4ece\u5165\u95e8\u5230\u5165\u571f | \u4eac\u4e1c\u4e91\u6280\u672f\u56e2\u961f"},"content":{"rendered":"

\u4e00\u3001\u4ec0\u4e48\u662fKafka<\/h2>\n

MQ\u6d88\u606f\u961f\u5217\u4f5c\u4e3a\u6700\u5e38\u7528\u7684\u4e2d\u95f4\u4ef6\u4e4b\u4e00\uff0c\u5176\u4e3b\u8981\u7279\u6027\u6709\uff1a\u89e3\u8026\u3001\u5f02\u6b65\u3001\u9650\u6d41\/\u524a\u5cf0\u3002<\/p>\n

Kafka \u548c\u4f20\u7edf\u7684\u6d88\u606f\u7cfb\u7edf(\u4e5f\u79f0\u4f5c\u6d88\u606f\u4e2d\u95f4\u4ef6)\u90fd\u5177\u5907\u7cfb\u7edf\u89e3\u8026\u3001\u5197\u4f59\u5b58\u50a8\u3001\u6d41\u91cf\u524a\u5cf0\u3001\u7f13\u51b2\u3001\u5f02\u6b65\u901a\u4fe1\u3001\u6269\u5c55\u6027\u3001\u53ef\u6062\u590d\u6027\u7b49\u529f\u80fd\u3002\u4e0e\u6b64\u540c\u65f6\uff0cKafka \u8fd8\u63d0\u4f9b\u4e86\u5927\u591a\u6570\u6d88\u606f\u7cfb\u7edf\u96be\u4ee5\u5b9e\u73b0\u7684\u6d88\u606f\u987a\u5e8f\u6027\u4fdd\u969c\u53ca\u56de\u6eaf\u6d88\u8d39\u7684\u529f\u80fd\u3002<\/p>\n

\u4e8c\u3001Kafka\u5e38\u7528\u6982\u5ff5<\/h2>\n

2.1 Topic\u4e0ePartition<\/h4>\n

Topic\uff08\u4e3b\u9898\uff09<\/strong>\u662f\u4e00\u4e2a\u903b\u8f91\u6982\u5ff5<\/strong>\uff0c\u5728\u7269\u7406\u4e0a\u5e76\u4e0d\u5b58\u50a8\u3002\u4e3b\u8981\u7528\u4e8e\u63cf\u8ff0\u4e00\u4e2a\u7c7b\u578b\u7684\u6d88\u606f\u3002\u4f8b\u5982\u6211\u4eec\u6709\u4e00\u4e2a\u4e1a\u52a1\u7cfb\u7edf\u4f1a\u53d1\u9001\u4e00\u4e2a\u63cf\u8ff0\u7528\u6237\u8ba2\u5355\u72b6\u6001\u7684\u6d88\u606f\uff0c\u90a3\u4e48\u8fd9\u4e00\u4e2a\u7c7b\u578b\u91cc\u9762\u6240\u6709\u7684\u6d88\u606f\u5c31\u662f\u4e00\u4e2aTopic<\/strong>\uff0c\u53c8\u6bd4\u5982\u8fd9\u4e2a\u4e1a\u52a1\u7cfb\u7edf\u540c\u65f6\u8fd8\u4f1a\u53d1\u9001\u63cf\u8ff0\u4f1a\u5458\u4f59\u989d\u7684\u6d88\u606f\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5c31\u662f\u4e00\u4e2a\u65b0\u7684\u6d88\u606f\u7c7b\u578b\uff0c\u4e5f\u5c31\u662f\u4e00\u4e2a\u65b0\u7684Topic<\/strong>\u3002<\/p>\n

**Partition\uff08\u5206\u533a\uff09**\u662f\u4e00\u4e2a\u7269\u7406\u6982\u5ff5\uff0c\u662f\u5b9e\u9645\u5b58\u5728\u4e8e\u7269\u7406\u8bbe\u5907\u4e0a\u7684\u3002\u4e00\u4e2aTopic\u7531\u591a\u4e2aPartition\u5171\u540c\u7ec4\u6210\u3002Partition\u7684\u5b58\u5728\u662f\u4e3a\u4e86\u63d0\u9ad8\u6d88\u606f\u7684\u6027\u80fd\u4e0e\u541e\u5410\u91cf\uff0c\u591a\u4e2a\u5206\u533a\u591a\u4e2a\u8fdb\u7a0b\u6d88\u606f\u5904\u7406\u901f\u5ea6\u80af\u5b9a\u8981\u6bd4\u5355\u5206\u533a\u5feb\u7684\u591a\u3002<\/p>\n

\"image-20230816151418046\"<\/p>\n

2.2 Broker\u4e0ePartition<\/h4>\n

Broker\u4f5c\u4e3a\u5206\u5e03\u5f0f\u7684\u5b9e\u73b0\uff0c\u5176\u5b9e\u53ef\u4ee5\u76f4\u63a5\u7b80\u5355\u7406\u89e3\u4e3a\u4e00\u4e2aKafka\u8fdb\u7a0b\u5c31\u662f\u4e00\u4e2aBroker\u3002<\/p>\n

\u6211\u4eec\u4e4b\u524d\u63d0\u5230Partition\u662f\u7269\u7406\u5b58\u5728\u7684\uff0c\u5176\u7269\u7406\u7684\u5b58\u5728\u7684\u4f4d\u7f6e\u5c31\u5728Broker\u4e2d\u3002\u540c\u65f6\uff0c\u4e3a\u4e86\u670d\u52a1\u5177\u6709\u4e00\u5b9a\u7684\u53ef\u9760\u6027\uff0c\u6bcf\u4e00\u4e2a\u5206\u533a\u90fd\u6709\u51e0\u4e2a\u526f\u672c\uff0c\u6bcf\u4e2a\u526f\u672c\u5b58\u5728\u4e8e\u4e0d\u540c\u7684Broker\u4e2d\u3002<\/p>\n

\"img\"<\/p>\n

\u6211\u4eec\u4e4b\u524d\u63d0\u5230\u7684Topic\u662f\u903b\u8f91\u6982\u5ff5\u5373\u5728\u4e8e\u6b64\uff0c\u5e76\u6ca1\u6709\u7269\u7406\u5b58\u5728\uff0c\u56fe\u4e2d\u6bcf\u4e2aTopicA-x\u90fd\u662f\u4e00\u4e2aPartition\uff0c\u5176\u4e2d\u540e\u9762\u7684\u6570\u5b57\u4ee3\u8868\u4e86\u4e00\u4e2a\u5206\u533a\u4e2d\u7684\u7b2c\u51e0\u4e2a\u526f\u672c<\/strong>\uff0c\u6bcf\u4e2aBroker\u4e2d\u90fd\u6709\u4e0d\u540c\u7684\u526f\u672c\uff0c\u76ee\u7684\u5c31\u662f\u5f53\u6709Broker\u5b95\u673a\u65f6\uff0c\u5176\u4ed6\u7684\u526f\u672c\u8fd8\u5b58\u5728\u4fdd\u8bc1\u7cfb\u7edf\u7684\u53ef\u7528\u6027\u3002<\/p>\n

\u6b64\u5916\uff0c\u591a\u4e2a\u526f\u672cPartition\u4e2d\u4f1a\u9009\u53d6\u4e00\u4e2a\u4f5c\u4e3aleader\uff0c\u5176\u4ed6\u7684\u4f5c\u4e3afollower\u3002\u6211\u4eec\u7684\u751f\u4ea7\u8005\u5728\u53d1\u9001\u6570\u636e\u7684\u65f6\u5019\uff0c\u662f\u76f4\u63a5\u53d1\u9001\u5230leader partition\u91cc\u9762<\/strong>\uff0c\u7136\u540efollower partition\u4f1a\u53bbleader\u90a3\u91cc\u81ea\u884c\u540c\u6b65\u6570\u636e\uff0c\u6d88\u8d39\u8005\u6d88\u8d39\u6570\u636e\u7684\u65f6\u5019\uff0c\u4e5f\u662f\u4eceleader\u90a3\u53bb\u6d88\u8d39\u6570\u636e\u7684<\/strong>\u3002<\/p>\n

\u526f\u672c\u5904\u4e8e\u4e0d\u540c\u7684 broker \u4e2d\uff0c\u5f53 leader \u526f\u672c\u51fa\u73b0\u6545\u969c\u65f6\uff0c\u4ece follower \u526f\u672c\u4e2d\u91cd\u65b0\u9009\u4e3e\u65b0\u7684 leader \u526f\u672c\u5bf9\u5916\u63d0\u4f9b\u670d\u52a1\u3002Kafka \u901a\u8fc7\u591a\u526f\u672c\u673a\u5236\u5b9e\u73b0\u4e86\u6545\u969c\u7684\u81ea\u52a8\u8f6c\u79fb\uff0c\u5f53 Kafka \u96c6\u7fa4\u4e2d\u67d0\u4e2a broker \u5931\u6548\u65f6\u4ecd\u7136\u80fd\u4fdd\u8bc1\u670d\u52a1\u53ef\u7528\u3002<\/p>\n

2.3 \u751f\u4ea7\u8005\u6d88\u8d39\u8005\u4e0eZooKeeper<\/h4>\n

\u4ea7\u751f\u6d88\u606f\u7684\u89d2\u8272\u6216\u7cfb\u7edf\u79f0\u4e4b\u4e3a\u751f\u4ea7\u8005\uff0c\u4f8b\u5982\u4e0a\u8ff0\u67d0\u4e2a\u4e1a\u52a1\u7cfb\u7edf\u4ea7\u751f\u4e86\u5173\u4e8e\u8ba2\u5355\u72b6\u6001\u7684\u76f8\u5173\u6d88\u606f\uff0c\u90a3\u4e48\u8be5\u4e1a\u52a1\u7cfb\u7edf\u5373\u4e3a\u751f\u4ea7\u8005\u3002<\/p>\n

\u6d88\u8d39\u8005\u5219\u662f\u8d1f\u8d23\u63a5\u6536\u6216\u8005\u4f7f\u7528\u6d88\u606f\u7684\u89d2\u8272\u6216\u7cfb\u7edf\u3002<\/p>\n

ZooKeeper \u662f Kafka \u7528\u6765\u8d1f\u8d23\u96c6\u7fa4\u5143\u6570\u636e\u7684\u7ba1\u7406\u3001\u63a7\u5236\u5668 \u7684\u9009\u4e3e\u7b49\u64cd\u4f5c\u7684\u3002Producer \u5c06\u6d88\u606f\u53d1\u9001\u5230 Broker\uff0cBroker \u8d1f\u8d23\u5c06\u6536\u5230\u7684\u6d88\u606f\u5b58\u50a8\u5230\u78c1\u76d8\u4e2d\uff0c\u800c Consumer \u8d1f\u8d23\u4ece Broker \u8ba2\u9605\u5e76\u6d88\u8d39\u6d88\u606f\u3002<\/p>\n

\"img\"<\/p>\n

\u5728\u6bcf\u4e00\u4e2aBroker\u5728\u542f\u52a8\u65f6\u90fd\u4f1a\u50cf\u5411ZK\u6ce8\u518c\u4fe1\u606f\uff0cZK\u4f1a\u9009\u53d6\u4e00\u4e2a\u6700\u65e9\u6ce8\u518c\u7684Broker\u4f5c\u4e3aController\uff0c\u540e\u9762Controller\u4f1a\u4e0eZK\u8fdb\u884c\u6570\u636e\u4ea4\u4e92\u83b7\u53d6\u5143\u6570\u636e\uff08\u5373\u6574\u4e2aKafka\u96c6\u7fa4\u7684\u4fe1\u606f\uff0c\u4f8b\u5982\u6709\u90a3\u4e9bBroker,\u6bcf\u4e2aBroker\u4e2d\u6709\u90a3\u4e9bPartition\u7b49\u4fe1\u606f\uff09\uff0c\u7136\u540e\u5176\u4ed6Broker\u518d\u4e0eController\u4ea4\u4e92\u8fdb\u800c\u6240\u6709\u7684Broker\u90fd\u80fd\u611f\u77e5\u5230\u6574\u4e2a\u96c6\u7fa4\u7684\u6240\u6709\u4fe1\u606f.<\/strong><\/p>\n

2.4 \u6d88\u8d39\u8005\u7ec4<\/h4>\n

\u76ee\u524d\u5927\u90e8\u5206\u4e1a\u52a1\u7cfb\u7edf\u67b6\u6784\u90fd\u662f\u5206\u5e03\u5f0f\u7684\uff0c\u5373\u4e00\u4e2a\u5e94\u7528\u4f1a\u90e8\u7f72\u591a\u4e2a\u8282\u70b9\u3002\u6b63\u5e38\u6765\u8bf4\uff0c\u4e00\u6761\u6d88\u606f\u53ea\u5e94\u8be5\u88ab\u5176\u4e2d\u67d0\u4e00\u4e2a\u8282\u70b9\u6d88\u8d39\u6389\uff0c\u800c\u4e0d\u5e94\u8be5\u662f\u6240\u6709\u88ab\u6240\u6709\u7684\u6d88\u8d39\u8005\u540c\u65f6\u6d88\u8d39\u4e00\u904d\u3002\u56e0\u6b64\u5c31\u4ea7\u751f\u4e86\u6d88\u8d39\u8005\u7ec4\u7684\u6982\u5ff5\uff0c\u5728\u4e00\u4e2a\u6d88\u8d39\u8005\u7ec4\u4e2d\uff0c\u4e00\u6761\u6d88\u606f\u53ea\u4f1a\u88ab\u6d88\u8d39\u8005\u7ec4\u4e2d\u7684\u4e00\u4e2a\u6d88\u8d39\u8005\u6240\u6d88\u8d39\u3002<\/strong><\/p>\n

\u4ece\u4f7f\u7528\u4e0a\u6765\u8bf4\uff0c\u4e00\u822c\u914d\u7f6e\u4e3a\u4e00\u4e2a\u5e94\u7528\u4e3a\u4e00\u4e2a\u6d88\u8d39\u8005\u7ec4\uff0c\u6216\u4e00\u4e2a\u5e94\u7528\u4e2d\u4e0d\u540c\u7684\u73af\u5883\u4e5f\u53ef\u4ee5\u914d\u7f6e\u4e0d\u7528\u7684\u6d88\u8d39\u8005\u7ec4\u3002\u4f8b\u5982\u751f\u4ea7\u73af\u5883\u7684\u8282\u70b9\u4e0e\u9884\u53d1\u73af\u5883\u7684\u8282\u70b9\u53ef\u4ee5\u914d\u7f6e\u4e24\u5957\u6d88\u8d39\u8005\u7ec4\uff0c\u8fd9\u6837\u5728\u6709\u65b0\u7684\u6539\u52a8\u90e8\u7f72\u5728\u9884\u53d1\u65f6\uff0c\u5373\u65f6\u672c\u6b21\u6539\u52a8\u4fee\u6539\u4e86\u6d88\u8d39\u52a8\u4f5c\u7684\u76f8\u5173\u903b\u8f91\uff0c\u4e5f\u4e0d\u4f1a\u5f71\u54cd\u751f\u4ea7\u7684\u6570\u636e\u3002<\/p>\n

\"img\"<\/p>\n

\u6d88\u8d39\u8005\u4e0e\u6d88\u8d39\u7ec4\u8fd9\u79cd\u6a21\u578b\u53ef\u4ee5\u8ba9\u6574\u4f53\u7684\u6d88\u8d39\u80fd\u529b\u5177\u5907\u6a2a\u5411\u4f38\u7f29\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u589e\u52a0(\u6216\u51cf\u5c11) \u6d88\u8d39\u8005\u7684\u4e2a\u6570\u6765\u63d0\u9ad8(\u6216\u964d\u4f4e)\u6574\u4f53\u7684\u6d88\u8d39\u80fd\u529b\u3002\u5bf9\u4e8e\u5206\u533a\u6570\u56fa\u5b9a\u7684\u60c5\u51b5\uff0c\u4e00\u5473\u5730\u589e\u52a0\u6d88\u8d39\u8005 \u5e76\u4e0d\u4f1a\u8ba9\u6d88\u8d39\u80fd\u529b\u4e00\u76f4\u5f97\u5230\u63d0\u5347\uff0c\u5982\u679c\u6d88\u8d39\u8005\u8fc7\u591a\uff0c\u51fa\u73b0\u4e86\u6d88\u8d39\u8005\u7684\u4e2a\u6570\u5927\u4e8e\u5206\u533a\u4e2a\u6570\u7684\u60c5\u51b5\uff0c \u5c31\u4f1a\u6709\u6d88\u8d39\u8005\u5206\u914d\u4e0d\u5230\u4efb\u4f55\u5206\u533a\u3002\u53c2\u8003\u4e0b\u56fe\uff08\u53f3\u4e0b\uff09\uff0c\u4e00\u5171\u6709 8 \u4e2a\u6d88\u8d39\u8005\uff0c7 \u4e2a\u5206\u533a\uff0c\u90a3\u4e48\u6700\u540e\u7684\u6d88\u8d39 \u8005 C7 \u7531\u4e8e\u5206\u914d\u4e0d\u5230\u4efb\u4f55\u5206\u533a\u800c\u65e0\u6cd5\u6d88\u8d39\u4efb\u4f55\u6d88\u606f\u3002<\/p><\/blockquote>\n

\"img\"<\/p>\n

2.5 ISR\u3001HW\u3001LEO<\/h4>\n

Kafka\u901a\u8fc7ISR\u673a\u5236\u5c3d\u91cf\u4fdd\u8bc1\u6d88\u606f\u4e0d\u4f1a\u4e22\u5931\u3002<\/p>\n

\u4e00\u4e2aPartition\u4e2d\u6240\u6709\u526f\u672c\u79f0\u4e3aAR(Assigned Replicas)\uff0c\u6240\u6709\u4e0e leader \u526f\u672c\u4fdd\u6301\u4e00\u5b9a\u7a0b\u5ea6\u540c\u6b65\u7684\u526f\u672c(\u5305\u62ec leader \u526f\u672c\u5728\u5185)\u7ec4\u6210 **ISR (In-Sync Replicas)\u3002**\u6211\u4eec\u4e0a\u6587\u63d0\u5230\uff0cfollower \u526f\u672c\u53ea\u8d1f\u8d23\u6d88\u606f\u7684\u540c\u6b65\uff0c\u5f88\u591a\u65f6\u5019 follower \u526f\u672c\u4e2d\u7684\u6d88\u606f\u76f8\u5bf9 leader \u526f\u672c\u800c\u8a00\u4f1a\u6709\u4e00\u5b9a\u7684\u6ede\u540e\uff0c\u800c\u53ca\u65f6\u4e0eleader\u526f\u672c\u4fdd\u6301\u6570\u636e\u4e00\u81f4\u7684\u5c31\u53ef\u4ee5\u6210\u4e3aISR\u6210\u5458\u3002\u4e0e leader \u526f\u672c\u540c\u6b65\u6ede\u540e\u8fc7\u591a\u7684\u526f\u672c(\u4e0d\u5305\u62ec leader \u526f\u672c)\u7ec4\u6210<\/strong>OSR (Out-of-Sync Replicas)\uff0c\u7531\u6b64\u53ef\u89c1\uff0c<\/strong>AR<\/em><\/strong><\/em>=ISR+OSR<\/strong>\u3002 \u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u6240\u6709\u7684 follower \u526f\u672c\u90fd\u5e94\u8be5\u4e0e leader \u526f\u672c\u4fdd\u6301\u4e00\u5b9a\u7a0b\u5ea6\u7684\u540c\u6b65\uff0c\u5373 AR=ISR\uff0c OSR \u96c6\u5408\u4e3a\u7a7a\u3002<\/p>\n

leader\u526f\u672c\u4f1a\u76d1\u542c\u6240\u6709follower\u526f\u672c\uff0c\u5f53\u5176\u4e0eleader\u526f\u672c\u6570\u636e\u4e00\u81f4\u65f6\u4f1a\u5c06\u5176\u52a0\u5165ISR\u6210\u5458\uff0c\u5f53\u4e0eleader\u526f\u672c\u76f8\u5dee\u592a\u591a\u6216\u5b95\u673a\u65f6\u4f1a\u5c06\u5176\u8e22\u51faISR\uff0c\u4e5f\u4f1a\u518d\u5176\u8ffd\u4e0aleader\u526f\u672c\u540e\u91cd\u65b0\u52a0\u5165ISR\u3002<\/p>\n

\u5f53leader\u526f\u672c\u5b95\u673a\u6216\u4e0d\u53ef\u7528\u65f6\uff0c\u53ea\u6709ISR\u6210\u5458\u624d\u80fd\u6709\u673a\u4f1a\u88ab\u9009\u62e9\u4e3a\u65b0\u7684leader\u526f\u672c\uff0c\u8fd9\u6837\u5c31\u80fd\u786e\u4fdd\u65b0\u7684leader\u4e0e\u5df2\u7ecf\u5b95\u673a\u7684leader\u6570\u636e\u4e00\u81f4\uff0c\u800c\u5982\u679c\u9009\u62e9OSR\u4e2d\u7684\u526f\u672c\u4f5c\u4e3aleader\u65f6\u4f1a\u9020\u6210\u90e8\u5206\u672a\u540c\u6b65\u7684\u6570\u636e\u4e22\u5931\u3002<\/strong><\/p>\n

\"MQ1.drawio\"<\/p>\n

\u4e0a\u56fe\u60c5\u51b5\u4e2d\uff0cP1\u526f\u672c\u9996\u5148\u5f53\u9009\u4e86leader\uff0c\u4e14\u53ea\u6709P2\u526f\u672c\u540c\u6b65\u4e86P1\u7684\u6570\u636e\uff0coffset\u90fd\u4e3a110\uff0c\u90a3\u4e48\u6b64\u65f6\u7684ISR\u53ea\u6709P1\u4e0eP2\uff0cOSR\u6709P3\u548cP4\u3002\u5f53P3\u540c\u6b65\u6570\u636e\u5230110\u540e\uff0c\u4e5f\u4f1a\u88ableader\u52a0\u5165\u5230ISR\u4e2d\uff0c\u82e5\u6b64\u65f6leader\u5b95\u673a\uff0c\u5219\u4f1a\u4eceISR\u4e2d\u9009\u51fa\u4e00\u4e2a\u65b0\u7684leader\uff0c\u5e76\u5c06P0\u8e22\u51faISR\u4e2d\u3002<\/p>\n

\u90a3\u4e48leader\u662f\u5982\u4f55\u611f\u77e5\u5230\u5176\u4ed6\u526f\u672c\u662f\u5426\u4e0e\u81ea\u5df1\u6570\u636e\u4e00\u81f4\u5462\uff1f<\/strong>\u9760\u7684\u5c31\u662fHW\u4e0eLEO\u673a\u5236\u3002<\/p>\n

LEO \u662f Log End Offset \u7684\u7f29\u5199\uff0c\u5b83\u6807\u8bc6\u5f53\u524d\u65e5\u5fd7\u6587\u4ef6\u4e2d\u4e0b\u4e00\u6761\u5f85\u5199\u5165\u6d88\u606f\u7684 offset\uff0cLEO \u7684\u5927\u5c0f\u76f8\u5f53\u4e8e\u5f53\u524d\u65e5\u5fd7\u5206\u533a\u4e2d\u6700\u540e\u4e00\u6761\u6d88\u606f\u7684 offset \u503c\u52a0 1\u3002\u5206\u533a ISR \u96c6\u5408\u4e2d\u7684\u6bcf\u4e2a\u526f\u672c\u90fd\u4f1a\u7ef4\u62a4\u81ea\u8eab\u7684 LEO<\/strong>\uff0c\u800c ISR \u96c6\u5408\u4e2d\u6700\u5c0f\u7684 LEO \u5373\u4e3a\u5206\u533a\u7684 HW<\/strong>\uff0cHW \u662f High Watermark \u7684\u7f29\u5199\uff0c\u4fd7\u79f0\u9ad8\u6c34\u4f4d\uff0c\u5b83\u6807\u8bc6 \u4e86\u4e00\u4e2a\u7279\u5b9a\u7684\u6d88\u606f\u504f\u79fb\u91cf(offset)\uff0c\u6d88\u8d39\u8005\u53ea\u80fd\u62c9\u53d6\u5230\u8fd9\u4e2a offset \u4e4b\u524d\u7684\u6d88\u606f\u3002<\/p>\n

\"img\"<\/p>\n

\u4e0a\u56fe\u4e2d\uff0c\u56e0\u4e3a\u6240\u6709\u526f\u672c\u6d88\u606f\u90fd\u662f\u4e00\u81f4\u7684\uff0c\u6240\u4ee5\u6240\u6709LEO\u90fd\u662f3\uff0cHW\u4e5f\u4e3a3\uff0c\u5f53\u6709\u65b0\u7684\u6d88\u606f\u4ea7\u751f\u65f6\uff0c\u5373leader\u526f\u672c\u65b0\u63d2\u5165\u4e863\/4\u4e24\u6761\u6d88\u606f\uff0c\u6b64\u65f6leader\u7684LEO\u4e3a5\uff0c\u4e24\u4e2afollower\u7684\u6b64\u65f6\u672a\u540c\u6b65\u6d88\u606f\uff0c\u6240\u4ee5LEO\u4ecd\u672a3\uff0cHW\u9009\u62e9\u6700\u5c0f\u7684LEO\u662f3.<\/p>\n

\u5f53follower1\u540c\u6b65\u5b8c\u6210leader\u7684\u6570\u636e\u540e\uff0cLEO\u672a5\uff0c\u4f46follower2\u672a\u540c\u6b65\uff0c\u6240\u4ee5\u6b64\u65f6HW\u4ecd\u672a3\u3002\u6b64\u540efollower2\u540c\u6b65\u5b8c\u6210\u540e\uff0c\u5176LEO\u4e3a5\uff0c\u6240\u6709\u526f\u672c\u7684LEO\u90fd\u672a5\uff0c\u6b64\u65f6HW\u9009\u62e9\u6700\u5c0f\u7684\u4e3a5\u3002<\/p>\n

\u901a\u8fc7\u8fd9\u79cd\u673a\u5236\uff0cleader\u526f\u672c\u5c31\u80fd\u77e5\u9053\u90a3\u4e9b\u526f\u672c\u662f\u6ee1\u8db3ISR\u6761\u4ef6\u7684\uff08\u8be5\u526f\u672cLEO\u662f\u5426\u7b49\u4e8eleader\u526f\u672cLEO\uff09\u3002<\/p>\n

\u4e09\u3001Kafka\u5168\u6d41\u7a0b\u68b3\u7406<\/h2>\n

3.1 \u6ce8\u518c\u4fe1\u606f<\/h4>\n

Kafka\u5f3a\u4f9d\u8d56\u4e0eZooKeeper\u4ee5\u7ef4\u62a4\u6574\u4e2a\u96c6\u7fa4\u7684\u4fe1\u606f\uff0c\u56e0\u6b64\u5728\u542f\u52a8\u524d\u5e94\u8be5\u5148\u542f\u52a8ZooKeeper\u3002<\/p>\n

\"MQ-\u7b2c<\/p>\n

\u5728ZK\u542f\u52a8\u5b8c\u6210\u4e4b\u540e\uff0c\u6240\u6709\u7684Broker(\u5373\u6240\u6709\u7684Kafka\u8fdb\u7a0b)\u90fd\u4f1a\u5411ZK\u6ce8\u518c\u4fe1\u606f\uff0c\u7136\u540e\u4e89\u53d6\/controller<\/code>\u7684\u76d1\u542c\u6743\uff0c\u83b7\u53d6\u5230\u76d1\u542c\u6743\u7684Broker\u79f0\u4e3aController\uff0c\u6b64\u540e\u7531Controller\u4e0eZK\u8fdb\u884c\u4fe1\u606f\u4ea4\u6362\uff0c\u6240\u6709\u7684Broker\u4e0eController\u8fdb\u884c\u6d88\u606f\u4ea4\u6362\u3002\u8fdb\u800c\u4fdd\u6301\u6574\u4e2aKafka\u96c6\u7fa4\u7684\u4fe1\u606f\u4e00\u81f4\u6027\u3002<\/p>\n

\"image-20230824143525137\"<\/p>\n

3.2 \u521b\u5efa\u4e3b\u9898<\/h4>\n

\u5728\u6240\u6709\u7684Broker\u6ce8\u518c\u5b8c\u6bd5\u540e\uff0c\u9700\u8981\u6ce8\u518c\u4e3b\u9898\uff08Topic\uff09\u4ee5\u7ee7\u7eed\u540e\u7eed\u6d41\u7a0b\u3002<\/p>\n

\"MQ-\u7b2c<\/p>\n

\u5176\u4e2d\u67d0\u4e2a\u5ba2\u6237\u7aef\u63a5\u6536\u5230\u521b\u5efaTopic\u8bf7\u6c42\u540e\uff0c\u4f1a\u5c06\u8bf7\u6c42\u4e2d\u7684\u5206\u533a\u65b9\u6848(\u6709\u51e0\u4e2a\u5206\u533a\u3001\u51e0\u4e2a\u526f\u672c\u7b49)\u544a\u8bc9ZK\uff0cZK\u518d\u5c06\u4fe1\u606f\u540c\u6b65\u81f3Controller\uff0c\u6b64\u540e\u6240\u6709\u7684Broker\u4e0eController\u4ea4\u6362\u5b8c\u5143\u6570\u636e\uff0c\u81f3\u6b64\u6240\u6709\u7684Broker\u90fd\u5df2\u7ecf\u77e5\u9053\u8be5Topic\u7684\u5206\u533a\u65b9\u6848\u4e86\uff0c\u7136\u540e\u6309\u7167\u8be5\u5206\u533a\u65b9\u6848\u521b\u5efa\u81ea\u5df1\u7684\u5206\u533a\u6216\u526f\u672c\u5373\u53ef\u3002<\/p>\n

\"image-20230824143846692\"<\/p>\n

\u4ee5\u4e0a\u5c31\u662f\u67d0\u4e00\u4e2abroker\u4e0b\u9762\u7684\u67d0\u4e00\u4e2a\u4e3b\u9898\u7684\u5206\u5e03\u60c5\u51b5<\/p>\n

3.3 \u751f\u4ea7\u8005\u53d1\u9001\u6570\u636e<\/h4>\n

\u5728\u521b\u5efa\u5b8c\u60f3\u8981\u7684Topic\u4e4b\u540e\uff0c\u751f\u4ea7\u8005\u5c31\u53ef\u4ee5\u5f00\u59cb\u53d1\u9001\u6570\u636e\u3002<\/p>\n

\"MQ-\u7b2c<\/p>\n

3.3.1 \u5c01\u88c5ProducerRecord<\/h5>\n

\u9996\u5148\u751f\u4ea7\u8005\u4f1a\u5c06\u4fe1\u606f\u5c01\u88c5\u6210ProducerRecord<\/code><\/p>\n

private final String topic;\nprivate final Integer partition;\nprivate final Headers headers;\nprivate final K key;\nprivate final V value;\nprivate final Long timestamp;\n\n\n<\/code><\/pre>\n
\u5176\u4e2d\u4e3b\u8981\u5305\u597d\u4e86\u8981\u53d1\u9001\u7684Topic\u540d\u79f0\uff0c\u8981\u53d1\u9001\u81f3\u90a3\u4e2a\u5206\u533a\uff0c\u4ee5\u53ca\u8981\u53d1\u9001\u7684\u6570\u636e\u548ckey\u3002<\/p>\n
\u5176\u4ed6\u7684\u90fd\u6bd4\u8f83\u597d\u7406\u89e3\uff0ckey\u7684\u4f5c\u7528\u662f\u5982\u679ckey\u5b58\u5728\u7684\u8bdd\uff0c\u5c31\u4f1a\u5bf9key\u8fdb\u884chash\uff0c\u7136\u540e\u6839\u636e\u4e0d\u540c\u7684\u7ed3\u679c\u53d1\u9001\u81f3\u4e0d\u540c\u7684\u5206\u533a\uff0c\u8fd9\u6837\u5f53\u6709\u76f8\u540c\u7684key\u65f6\uff0c\u6240\u6709\u76f8\u540c\u7684key\u90fd\u4f1a\u53d1\u9001\u5230\u540c\u4e00\u4e2a\u5206\u533a\uff0c\u6211\u4eec\u4e4b\u524d\u4e5f\u63d0\u5230\uff0c\u6240\u6709\u7684\u65b0\u6d88\u606f\u90fd\u4f1a\u88ab\u6dfb\u52a0\u5230\u5206\u533a\u7684\u5c3e\u90e8\uff0c\u8fdb\u800c\u4fdd\u8bc1\u4e86\u6570\u636e\u7684\u987a\u5e8f\u6027\u3002<\/p>\n
\u4f8b\u5982\u6211\u4eec\u6709\u4e2a\u5173\u4e8e\u4f1a\u5458\u7684\u4e1a\u52a1\u7cfb\u7edf\uff0c\u5176\u4e2d\u751f\u4ea7\u8005\u4f1a\u4ea7\u751f\u5173\u4e8e\u67d0\u4e2a\u4f1a\u5458\u79ef\u5206\u7684\u4fe1\u606f\uff0c\u6d88\u8d39\u8005\u62ff\u5230\u8fd9\u4e2a\u6d88\u606f\u4e4b\u540e\u4f1a\u5b9e\u9645\u5bf9\u79ef\u5206\u8fdb\u884c\u64cd\u4f5c\u3002\u5047\u5982\u67d0\u4e2a\u4f1a\u5458\u5148\u83b7\u5f97\u4e86100\u79ef\u5206\uff0c\u7136\u540e\u53c8\u6d88\u8d39\u4e8650\u79ef\u5206\u3002\u56e0\u6b64\u751f\u4ea7\u8005\u4f1a\u53d1\u9001\u4e24\u4e2aMQ\u6d88\u606f\uff0c\u4f46\u662f\u5047\u5982\u6ca1\u6709\u4f7f\u7528key\u7684\u529f\u80fd\uff0c\u8fd9\u4e24\u4e2a\u6d88\u606f\u88ab\u53d1\u9001\u5230\u4e86\u4e0d\u540c\u7684\u5206\u533a\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u5206\u533a\u7684\u6d88\u8d39\u6c34\u5e73\u4e0d\u4e00\u6837<\/strong>\uff08\u4f8b\u5982\u83b7\u5f97\u79ef\u5206\u7684\u903b\u8f91\u8017\u65f6\u6bd4\u8f83\u957f\u800c\u67d0\u4e2a\u5206\u533a\u53c8\u90fd\u662f\u83b7\u5f97\u79ef\u5206\u7684MQ\uff09\uff0c\u5c31\u6709\u53ef\u80fd\u9020\u6210\u6d88\u8d3950\u79ef\u5206\u7684MQ\u4f1a\u5148\u88ab\u6d88\u8d39\u8005\u6536\u5230<\/strong>\u3002<\/p>\n
\u800c\u5047\u5982\u6b64\u65f6\u4f1a\u5458\u79ef\u5206\u4e3a0\u7684\u60c5\u51b5\u4e0b\u518d\u53bb\u6d88\u8d3950\u79ef\u5206\u660e\u663e\u662f\u4e0d\u5408\u7406\u4e14\u903b\u8f91\u9519\u8bef\u7684\uff0c\u4f1a\u9020\u6210\u4e1a\u52a1\u7cfb\u7edf\u5f02\u5e38\u3002\u56e0\u6b64\u5728\u751f\u4ea7\u8005\u53d1\u9001MQ\u65f6\u5982\u679c\u6d88\u606f\u6709\u987a\u5e8f\u6027\u8981\u6c42\u5219\u4e00\u5b9a\u8981\u5c06key\u8d4b\u503c<\/strong>\uff0c\u5177\u4f53\u7684\u53ef\u4ee5\u662f\u67d0\u4e9b\u6709\u552f\u4e00\u6027\u6807\u8bc6\u4f8b\u5982\u6b64\u5904\u53ef\u4ee5\u662f\u4f1a\u5458ID\u3002<\/p>\n
3.3.2 \u5e8f\u5217\u5316\u6570\u636e\u3001\u83b7\u53d6\u5143\u6570\u636e\u3001\u786e\u5b9a\u5206\u533a<\/h5>\n
\u9996\u5148\u751f\u4ea7\u5219\u5ba2\u6237\u7aef\u7684\u5e8f\u5217\u5316\u5668\u4f1a\u5c06\u8981\u53d1\u9001\u7684ProducerRecord\u5bf9\u8c61\u5e8f\u5217\u5316\u6210\u5b57\u8282\u6570\u7ec4 \uff0c\u7136\u540e\u53d1\u9001\u5230\u6d88\u8d39\u7aef\u540e\u6d88\u8d39\u7aef\u7684\u53cd\u5e8f\u5217\u5316\u5668\u4f1a\u5c06\u5b57\u8282\u6570\u7ec4\u518d\u8f6c\u6362\u6210\u5bf9\u5e94\u7684\u6d88\u8d39\u5bf9\u8c61\u3002\u5e38\u7528\u7684\u5e8f\u5217\u5316\u5668\u6709String\u3001Doule\u3001Long\u7b49\u7b49\u3002<\/p>\n
\u5176\u6b21\u4e5f\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5e8f\u5217\u5316\u5668\u4e0e\u53cd\u5e8f\u5217\u5316\u5668\uff0c\u4f8b\u5982\u53ef\u4ee5\u5c06\u5c06\u5b57\u8282\u6570\u7ec4\u8fdb\u884c\u52a0\u5bc6\u540e\u518d\u8fdb\u884c\u4f20\u8f93\uff0c\u4ee5\u6b64\u4fdd\u8bc1\u6570\u636e\u7684\u5b89\u5168\u6027\u3002<\/p>\n
\u6570\u636e\u90fd\u51c6\u5907\u5b8c\u6210\u4e4b\u540e\u5c31\u53ef\u4ee5\u5f00\u59cb\u83b7\u53d6broker\u5143\u6570\u636e\uff0c\u4f8b\u5982host\u7b49\uff0c\u4ee5\u65b9\u4fbf\u540e\u7eed\u786e\u5b9a\u8981\u53d1\u9001\u7684\u4f4d\u7f6e\u3002<\/p>\n
\u786e\u5b9a\u8981\u53d1\u9001\u81f3\u90a3\u4e2a\u5206\u533a\u6709\u51e0\u79cd\u60c5\u51b5\uff1a<\/p>\n
    \n
  1. \u5982\u679cProducerRecord\u4e2d\u6307\u5b9a\u4e86\u8981\u53d1\u5f80\u90a3\u4e2a\u5206\u533a\uff0c\u5219\u9009\u62e9\u7528\u6237\u4f7f\u7528\u7684\u5206\u533a<\/li>\n
  2. \u5982\u679c\u6ca1\u6709\u6307\u5b9a\u5206\u533a\uff0c\u5219\u67e5\u770bProducerRecord\u4e2dkey\u662f\u5426\u4e3a\u7a7a\uff0c\u5982\u679c\u4e0d\u4e3a\u7a7a\u5219\u5bf9key\u8fdb\u884c\u8ba1\u7b97\u4ee5\u83b7\u53d6\u4f7f\u7528\u90a3\u4e2a\u5206\u533a<\/li>\n
  3. \u5982\u679ckey\u4e5f\u4e3a\u7a7a\uff0c\u5219\u6309\u7167\u8f6e\u8be2\u7684\u65b9\u5f0f\u53d1\u9001\u81f3\u4e0d\u540c\u7684\u5206\u533a<\/li>\n<\/ol>\n
    \u4e5f\u53ef\u4ee5\u901a\u8fc7\u81ea\u5b9a\u4e49\u5206\u533a\u5668\u7684\u65b9\u5f0f\u786e\u5b9a\u53d1\u9001\u90a3\u4e2a\u5206\u533a\u3002<\/p>\n
    3.3.3 \u5199\u5165\u7f13\u51b2\u533a\u3001\u5206\u6279\u5206\u9001\u6d88\u606f<\/h5>\n
    \u751f\u4ea7\u8005\u53d1\u9001\u7684MQ\u5e76\u4e0d\u4f1a\u76f4\u63a5\u901a\u8fc7\u7f51\u7edc\u53d1\u9001\u81f3broker\uff0c\u800c\u662f\u4f1a\u5148\u4fdd\u5b58\u5728\u751f\u4ea7\u8005\u7684\u7f13\u51b2\u533a\u3002<\/p>\n
    \u7136\u540e\u7531\u751f\u4ea7\u8005\u7684Sender\u7ebf\u7a0b\u5206\u6279\u6b21\u5c06\u6570\u636e\u53d1\u9001\u51fa\u53bb\uff0c\u5206\u6279\u6b21\u53d1\u9001\u7684\u539f\u56e0\u662f\u53ef\u4ee5\u8282\u7701\u4e00\u5b9a\u7684\u7f51\u7edc\u6d88\u8017\u4e0e\u63d0\u5347\u901f\u5ea6\uff0c\u56e0\u4e3a\u4e00\u6b21\u53d1\u9001\u4e00\u4e07\u6761\u4e0e\u4e00\u4e07\u6b21\u53d1\u9001\u4e00\u6761\u80af\u5b9a\u6548\u7387\u4e0d\u592a\u4e00\u6837\u3002<\/p>\n
    \u5206\u6279\u6b21\u53d1\u9001\u4e3b\u8981\u6709\u4e24\u4e2a\u53c2\u6570\uff0c\u6279\u6b21\u91cf\u4e0e\u7b49\u5f85\u65f6\u95f4<\/strong>\u3002\u4e24\u4e2a\u53c2\u6570\u4e3b\u8981\u662f\u89e3\u51b3\u4e24\u4e2a\u95ee\u9898\uff0c\u4e00\u4e2a\u662f\u9632\u6b62\u4e00\u6b21\u53d1\u9001\u7684\u6d88\u606f\u91cf\u8fc7\u5927\uff0c\u6bd4\u5982\u4e00\u6b21\u53ef\u80fd\u53d1\u9001\u51e0\u5341mb\u7684\u6570\u636e\u3002\u53e6\u4e00\u4e2a\u89e3\u51b3\u7684\u95ee\u9898\u662f\u9632\u6b62\u957f\u65f6\u95f4\u6ca1\u6709\u8db3\u591f\u6d88\u606f\u4ea7\u751f\u800c\u5bfc\u81f4\u7684\u6d88\u606f\u4e00\u76f4\u4e0d\u53d1\u9001\u3002\u56e0\u6b64\u5f53\u4e0a\u8ff0\u4e24\u4e2a\u6761\u4ef6\u4efb\u610f\u6ee1\u8db3\u5176\u4e00\u5c31\u4f1a\u89e6\u53d1\u8fd9\u4e00\u6279\u6b21\u7684\u53d1\u9001\u3002<\/p>\n
    Kafka\u7684\u7f51\u7edc\u6a21\u578b\u7528\u7684\u662f\u52a0\u5f3a\u7248\u7684reactor\u7f51\u7edc\u6a21\u578b<\/p>\n
    \"img\"<\/p>\n
    \n
    \u9996\u5148\u5ba2\u6237\u7aef\u53d1\u9001\u8bf7\u6c42\u5168\u90e8\u4f1a\u5148\u53d1\u9001\u7ed9\u4e00\u4e2aAcceptor\uff0cbroker\u91cc\u9762\u4f1a\u5b58\u57283\u4e2a\u7ebf\u7a0b\uff08\u9ed8\u8ba4\u662f3\u4e2a\uff09\uff0c\u8fd93\u4e2a\u7ebf\u7a0b\u90fd\u662f\u53eb\u505aprocessor\uff0cAcceptor\u4e0d\u4f1a\u5bf9\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u505a\u4efb\u4f55\u7684\u5904\u7406\uff0c\u76f4\u63a5\u5c01\u88c5\u6210\u4e00\u4e2a\u4e2asocketChannel\u53d1\u9001\u7ed9\u8fd9\u4e9bprocessor\u5f62\u6210\u4e00\u4e2a\u961f\u5217\uff0c\u53d1\u9001\u7684\u65b9\u5f0f\u662f\u8f6e\u8be2\uff0c\u5c31\u662f\u5148\u7ed9\u7b2c\u4e00\u4e2aprocessor\u53d1\u9001\uff0c\u7136\u540e\u518d\u7ed9\u7b2c\u4e8c\u4e2a\uff0c\u7b2c\u4e09\u4e2a\uff0c\u7136\u540e\u53c8\u56de\u5230\u7b2c\u4e00\u4e2a\u3002\u6d88\u8d39\u8005\u7ebf\u7a0b\u53bb\u6d88\u8d39\u8fd9\u4e9bsocketChannel\u65f6\uff0c\u4f1a\u83b7\u53d6\u4e00\u4e2a\u4e2arequest\u8bf7\u6c42\uff0c\u8fd9\u4e9brequest\u8bf7\u6c42\u4e2d\u5c31\u4f1a\u4f34\u968f\u7740\u6570\u636e\u3002<\/p>\n
    \u7ebf\u7a0b\u6c60\u91cc\u9762\u9ed8\u8ba4\u67098\u4e2a\u7ebf\u7a0b\uff0c\u8fd9\u4e9b\u7ebf\u7a0b\u662f\u7528\u6765\u5904\u7406request\u7684\uff0c\u89e3\u6790\u8bf7\u6c42\uff0c\u5982\u679crequest\u662f\u5199\u8bf7\u6c42\uff0c\u5c31\u5199\u5230\u78c1\u76d8\u91cc\u3002\u8bfb\u7684\u8bdd\u8fd4\u56de\u7ed3\u679c\u3002 processor\u4f1a\u4eceresponse\u4e2d\u8bfb\u53d6\u54cd\u5e94\u6570\u636e\uff0c\u7136\u540e\u518d\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002\u8fd9\u5c31\u662fKafka\u7684\u7f51\u7edc\u4e09\u5c42\u67b6\u6784\u3002<\/p>\n
    \u6240\u4ee5\u5982\u679c\u6211\u4eec\u9700\u8981\u5bf9kafka\u8fdb\u884c\u589e\u5f3a\u8c03\u4f18\uff0c\u589e\u52a0processor\u5e76\u589e\u52a0\u7ebf\u7a0b\u6c60\u91cc\u9762\u7684\u5904\u7406\u7ebf\u7a0b\uff0c\u5c31\u53ef\u4ee5\u8fbe\u5230\u6548\u679c\u3002request\u548cresponse\u90a3\u4e00\u5757\u90e8\u5206\u5176\u5b9e\u5c31\u662f\u8d77\u5230\u4e86\u4e00\u4e2a\u7f13\u5b58\u7684\u6548\u679c\uff0c\u662f\u8003\u8651\u5230processor\u4eec\u751f\u6210\u8bf7\u6c42\u592a\u5feb\uff0c\u7ebf\u7a0b\u6570\u4e0d\u591f\u4e0d\u80fd\u53ca\u65f6\u5904\u7406\u7684\u95ee\u9898\u3002<\/p>\n<\/blockquote>\n
    3.4 \u6d88\u8d39\u8005\u6d88\u8d39\u6570\u636e<\/h4>\n
    \u6d88\u8d39\u8005\u6d88\u8d39\u4e5f\u4e3b\u8981\u5206\u4e3a\u4e24\u4e2a\u9636\u6bb5\uff1a<\/p>\n
      \n
    1. \u4fe1\u606f\u6ce8\u518c\u9636\u6bb5\uff0c\u5373\u6574\u4e2a\u6d88\u8d39\u8005\u7ec4\u5411\u96c6\u7fa4\u6ce8\u518c\u6d88\u8d39\u4fe1\u606f\u7b49<\/li>\n
    2. \u4fe1\u606f\u6d88\u8d39\u9636\u6bb5\uff0c\u5f00\u59cb\u4fe1\u606f\u6d88\u606f\uff0c\u786e\u4fdd\u6d88\u606f\u53ef\u9760\u6027\u7b49<\/li>\n<\/ol>\n
      3.4.1 \u4fe1\u606f\u6ce8\u518c<\/h5>\n
      \"\"<\/p>\n
      \u9996\u5148\u6d88\u8d39\u8005\u7ec4\u5185\u6240\u6709\u6d88\u8d39\u8005\u90fd\u4f1a\u5411\u96c6\u7fa4\u5bfb\u627e\u81ea\u5df1\u7684Coordinator\uff08\u4ee5\u6d88\u8d39\u8005\u7ec4id\u505a\u5747\u8861\uff09\u3002\u627e\u5230Coordinator\u540e\uff0c\u6240\u6709\u7684Consumer\u90fd\u4f1a\u5411Coordinator\u53d1\u8d77join group<\/code>\u52a0\u5165\u6d88\u8d39\u8005\u7ec4\u7684\u8bf7\u6c42\uff0cCoordinator\u4f1a\u9009\u62e9\u4e00\u4e2a\u6700\u65e9\u53d1\u8d77\u8bf7\u6c42\u7684Consumer\u4f5c\u4e3aleader Consumer\uff0c\u5176\u4ed6\u7684Consumer\u4f5c\u4e3afollower\u3002<\/p>\n
      \"MQ-\u7b2c<\/p>\n
      leader\u4f1a\u6839\u636e\u8981\u6d88\u8d39\u7684Topic\u53ca\u5206\u533a\u60c5\u51b5\u5236\u5b9a\u4e00\u4e2a\u6d88\u8d39\u65b9\u6848\uff0c\u544a\u77e5\u7ed9Coordinator\uff0cCoordinator\u518d\u5c06\u6b64\u6d88\u8d39\u65b9\u6848\u544a\u77e5\u7ed9\u5404\u4e2afollower\u3002<\/p>\n
      \u81ea\u6b64\uff0c\u6240\u6709\u7684Consumer\u90fd\u5df2\u7ecf\u77e5\u9053\u81ea\u5df1\u8981\u6d88\u8d39\u90a3\u4e2a\u5206\u533a\u4e86\u3002<\/p>\n
      \"\"<\/p>\n
      \u5982\u4e0a\u56fe\uff0c\u6bcf\u4e2a\u6d88\u8d39\u8005\u90fd\u627e\u4e86\u81ea\u5df1\u8981\u6d88\u8d39\u7684\u5206\u533a\u60c5\u51b5<\/p>\n
      3.4.2 \u6d88\u8d39\u4fe1\u606f<\/h5>\n
      \u6d88\u8d39\u4fe1\u606f\u4e3b\u8981\u5305\u542b\u4e86\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n
      \"MQ-\u7b2c<\/p>\n
      1\uff09\u62c9\u53d6\u6d88\u606f<\/p>\n
      \u5e38\u7528\u7684\u6d88\u606f\u961f\u5217\u7684\u6d88\u8d39\u6d88\u606f\u4e00\u822c\u6709\u4e24\u79cd\uff0c\u63a8\u9001\u6216\u8005\u62c9\u53d6\uff0cKafka\u5728\u6b64\u5904\u7528\u7684\u662f\u62c9\u53d6\u6a21\u5f0f\u3002<\/p>\n
      try {\n  while (true) {\n    ConsumerRecords<String, String> records = consumer.poll(Duration.ofSeconds(100));\n    for (ConsumerRecord<String, String> record : records) {\n      int updateCount = 1;\n      if (map.containsKey(record.value())) {\n        updateCount = (int) map.get(record.value() + 1);\n      }\n      map.put(record.value(), updateCount);\n    }\n  }\n}finally {\n  consumer.close();\n}\n\n\n<\/code><\/pre>\n
      \u901a\u8fc7\u8bbe\u7f6e\u5b9a\u65f6\u65f6\u95f4\uff0c\u6bcf\u9694\u591a\u957f\u65f6\u95f4\u62c9\u53d6\u4e00\u6b21\u6d88\u606f\u3002<\/p>\n
      2\uff09\u53cd\u5e8f\u5217\u5316\u4e0e\u6d88\u8d39\u6d88\u606f<\/p>\n
      \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u62ff\u5230\u7684\u5c31\u662fConsumerRecord<\/code>\u5bf9\u8c61\uff0c\u4f46\u662f\u5b9e\u9645\u4e0a\u8fd9\u4e2a\u662f\u6d88\u8d39\u8005\u5ba2\u6237\u7aef\u5e2e\u6211\u4eec\u505a\u7684\u53cd\u5e8f\u5217\u5316\u7684\u64cd\u4f5c\uff0c\u5c06\u5b57\u8282\u6570\u7ec4(byte[])\u53cd\u5e8f\u5217\u5316\u6210\u4e86\u5bf9\u8c61\u3002\u53c2\u80033.3.2\u6211\u4eec\u4e5f\u53ef\u4ee5\u81ea\u5b9a\u4e49\u53cd\u5e8f\u5217\u5316\u5668\u3002<\/p>\n
      3\uff09\u63d0\u4ea4\u6d88\u606f\u4f4d\u79fb<\/p>\n
      \u4f8b\u5982\u5f53\u6d88\u606f\u961f\u5217\u4e2d\u6709100\u6761\u6d88\u606f\uff0c\u6d88\u8d39\u8005\u7b2c\u4e00\u6b21\u6d88\u8d39\u4e8620\u6761\u6d88\u606f<\/strong>\uff0c\u90a3\u4e48\u7b2c\u4e8c\u6b21\u6d88\u8d39\u7684\u4f4d\u7f6e\u80af\u5b9a\u662f\u8981\u4ece\u7b2c21\u6761\u6d88\u606f\u5f00\u59cb\u6d88\u8d39\uff0c\u800c\u8bb0\u5f55\u7b2c21\u6761\u6d88\u606f\u7684\u4fe1\u606f\u79f0\u4e4b\u4e3aoffset\uff0coffset\u4e3a\u5df2\u7ecf\u6d88\u8d39\u4f4d\u7f6e+1.<\/p>\n
      \"MQ-\u7b2c<\/p>\n
      \u5728\u4e4b\u524d\u7248\u672c\u7684\u5ba2\u6237\u7aef\uff0coffset\u6570\u636e\u88ab\u5b58\u5728zk\u4e2d\uff0c\u6bcf\u6b21\u90fd\u9700\u8981\u8bf7\u6c42zk\u83b7\u53d6\u6570\u636e\uff0c\u800czk\u5e76\u4e0d\u9002\u5408\u4f5c\u4e3a\u9ad8\u5e76\u53d1\u7684\u8bf7\u6c42\u3002\u56e0\u6b64\u5728\u73b0\u5728\u7684\u7248\u672c\u4e2d\uff0ckafka\u901a\u8fc7\u5efa\u7acb\u4e00\u4e2aTopic\u6765\u8bb0\u5f55\u6240\u6709\u6d88\u8d39\u8005\u6d88\u8d39\u7684offset\uff0c\u8fd9\u4e2aTopic\u662f__consumer_offsets<\/code>\u3002\u6bcf\u4e00\u4e2a\u6d88\u8d39\u8005\u5728\u6d88\u8d39\u6570\u636e\u4e4b\u524d\uff08\u5373pol()\u65b9\u6cd5\u4e2d\uff09\uff0c\u90fd\u4f1a\u628a\u4e0a\u4e00\u6b21\u6d88\u8d39\u6570\u636e\u4e2d\u6700\u5927\u7684offset\u63d0\u4ea4\u5230\u8be5Topic\u4e2d\uff0c\u5373\u6b64\u65f6\u662f\u4f5c\u4e3a\u751f\u4ea7\u8005\u7684\u8eab\u4efd\u6295\u9012\u4fe1\u606f\u3002<\/p>\n
      \"image-20230825165847711\"<\/p>\n
      kafka\u4e2d\u6709\u51e0\u79cdoffset\u63d0\u4ea4\u6a21\u5f0f\uff0c\u9ed8\u8ba4\u7684\u662f\u81ea\u52a8\u63d0\u4ea4\uff1a<\/p>\n
      enable.auto.commit<\/code>\u8bbe\u7f6e\u4e3atrue\u65f6\uff0c\u6bcf\u9694auto.commit.interval.ms<\/code>\u65f6\u95f4\u4f1a\u81ea\u52a8\u63d0\u4ea4\u5df2\u7ecf\u5df2\u7ecf\u62c9\u53d6\u5230\u7684\u6d88\u606f\u4e2d\u6700\u5927\u7684offset\u3002<\/p>\n
      \u4f46\u662f\u9ed8\u8ba4\u7684\u81ea\u52a8\u63d0\u4ea4\u4e5f\u4f1a\u5e26\u6765\u91cd\u590d\u6d88\u8d39\u4e0e\u6d88\u606f\u4e22\u5931\u7684\u95ee\u9898\uff1a<\/p>\n
        \n
      • \u91cd\u590d\u6d88\u8d39\u3002\u4f8b\u5982\u4eceoffset\u4e3a21\u5f00\u59cb\u62c9\u53d6\u6570\u636e\uff0c\u62c9\u53d6\u5230\u4e8640\uff0c\u4f46\u662f\u5f53\u6d88\u8d39\u8005\u5904\u7406\u5230\u7b2c30\u6761\u6570\u636e\u7684\u65f6\u5019\u7cfb\u7edf\u5b95\u673a\u4e86\uff0c\u90a3\u4e48\u6b64\u65f6\u5df2\u7ecf\u63d0\u4ea4\u7684offset\u4ecd\u4e3a21\uff0c\u5f53\u8282\u70b9\u91cd\u65b0\u8fde\u63a5\u65f6\uff0c\u4ecd\u4f1a\u4ece21\u6d88\u8d39\uff0c\u90a3\u4e48\u6b64\u65f621-30\u7684\u6570\u636e\u5c31\u4f1a\u88ab\u91cd\u65b0\u6d88\u8d39\u3002\u8fd8\u6709\u4e00\u79cd\u60c5\u51b5\u662f\u518d\u5747\u8861\u65f6\uff0c\u4f8b\u5982\u6709\u65b0\u8282\u70b9\u52a0\u5165\u4e5f\u4f1a\u5f15\u53d1\u7c7b\u4f3c\u7684\u95ee\u9898\u3002<\/li>\n
      • \u6d88\u606f\u4e22\u5931\u3002<\/li>\n<\/ul>\n
        \u624b\u52a8\u540c\u6b65\u63d0\u4ea4<\/strong><\/p>\n
        public static void main(String[] args) {\n    while (true) {\n        \/\/ \u8fd9\u91cc\u7684\u53c2\u6570\u6307\u7684\u662f\u8f6e\u8be2\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u4e5f\u5c31\u662f\u591a\u957f\u65f6\u95f4\u53bb\u62c9\u4e00\u6b21\u6570\u636e\n        ConsumerRecords<String, String> records = consumer.poll(Duration.ofMillis(3000));\n        records.forEach((ConsumerRecord<String, String> record) -> {\n            \/\/ \u6a21\u62df\u6d88\u606f\u7684\u5904\u7406\u903b\u8f91\n            System.out.println("revice: key ===" + record.key() + " value ====" + record.value() + " topic ===" + record.topic());\n        });\n        try {\n            \/\/\u5904\u7406\u5b8c\u5f53\u524d\u6279\u6b21\u7684\u6d88\u606f\uff0c\u5728\u8f6e\u8be2\u66f4\u591a\u7684\u6d88\u606f\u4e4b\u524d\uff0c\u8c03\u7528commitSync\u65b9\u6cd5\u63d0\u4ea4\u5f53\u524d\u6279\u6b21\u6700\u65b0\u7684\u6d88\u606f\n            consumer.commitSync();\n        } catch (CommitFailedException e) {\n            \/\/todo \u4e8b\u52a1\u56de\u6eda\n            e.printStackTrace();\n        }\n    }\n}\n\n\n<\/code><\/pre>\n
        \u624b\u52a8\u540c\u6b65\u63d0\u4ea4\u53ef\u4ee5\u5728\u4efb\u4f55\u65f6\u5019\u63d0\u4ea4offset\uff0c\u4f8b\u5982\u53ef\u4ee5\u6bcf\u6d88\u8d39\u4e00\u6761\u8fdb\u884c\u4e00\u6b21\u63d0\u4ea4\u3002\u63d0\u4ea4\u5931\u8d25\u4e4b\u540e\u4f1a\u629b\u51fa\u5f02\u5e38\uff0c\u53ef\u4ee5\u5728\u5f02\u5e38\u4e2d\u505a\u51fa\u8865\u507f\u673a\u5236\uff0c\u4f8b\u5982\u4e8b\u52a1\u56de\u6eda\u7b49\u64cd\u4f5c\u3002<\/p>\n
        \u4f46\u662f\u56e0\u4e3a\u624b\u52a8\u540c\u6b65\u63d0\u4ea4\u662f\u963b\u585e\u6027\u8d28\u7684\uff0c\u6240\u4ee5\u4e0d\u5efa\u8bae\u592a\u9ad8\u7684\u9891\u7387\u8fdb\u884c\u63d0\u4ea4\u3002<\/p>\n
        \u624b\u52a8\u5f02\u6b65\u63d0\u4ea4<\/strong><\/p>\n
        \u5f02\u6b65\u63d0\u4ea4\u6709\u4e09\u79cd\u65b9\u5f0f\uff0c\u533a\u522b\u5728\u4e8e\u6709\u6ca1\u6709\u56de\u8c03\u7684\u65b9\u5f0f\u3002<\/p>\n
        @Test\npublic void asynCommit1(){\n    while (true) {\n        \/\/ \u8fd9\u91cc\u7684\u53c2\u6570\u6307\u7684\u662f\u8f6e\u8be2\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u4e5f\u5c31\u662f\u591a\u957f\u65f6\u95f4\u53bb\u62c9\u4e00\u6b21\u6570\u636e\n        ConsumerRecords<String, String> records = consumer.poll(Duration.ofMillis(3000));\n        records.forEach((ConsumerRecord<String, String> record) -> {\n            System.out.println("revice: key ===" + record.key() + " value ====" + record.value() + " topic ===" + record.topic());\n        });\n        consumer.commitAsync();\n    }\n}\n\n@Test\npublic void asynCommit2(){\n    while (true) {\n        \/\/ \u8fd9\u91cc\u7684\u53c2\u6570\u6307\u7684\u662f\u8f6e\u8be2\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u4e5f\u5c31\u662f\u591a\u957f\u65f6\u95f4\u53bb\u62c9\u4e00\u6b21\u6570\u636e\n        ConsumerRecords<String, String> records = consumer.poll(Duration.ofMillis(3000));\n        records.forEach((ConsumerRecord<String, String> record) -> {\n            System.out.println("revice: key ===" + record.key() + " value ====" + record.value() + " topic ===" + record.topic());\n        });\n        \/\/ \u5f02\u6b65\u56de\u8c03\u673a\u5236\n        consumer.commitAsync(new OffsetCommitCallback(){\n            @Override\n            public void onComplete(Map<TopicPartition, OffsetAndMetadata> offsets, Exception exception) {\n                if (exception!=null){\n                    System.out.println(String.format("\u63d0\u4ea4\u5931\u8d25:%s", offsets.toString()));\n                }\n            }\n        });\n    }\n}\n\n@Test\npublic void asynCommit3(){\n    while (true) {\n        \/\/ \u8fd9\u91cc\u7684\u53c2\u6570\u6307\u7684\u662f\u8f6e\u8be2\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u4e5f\u5c31\u662f\u591a\u957f\u65f6\u95f4\u53bb\u62c9\u4e00\u6b21\u6570\u636e\n        ConsumerRecords<String, String> records = consumer.poll(Duration.ofMillis(3000));\n        records.forEach((ConsumerRecord<String, String> record) -> {\n            System.out.println("revice: key ===" + record.key() + " value ====" + record.value() + " topic ===" + record.topic());\n        });\n        consumer.commitAsync((offsets, exception) ->{\n            if (exception!=null){\n                System.out.println(String.format("\u63d0\u4ea4\u5931\u8d25:%s", offsets.toString()));\n            }\n        });\n    }\n}\n\n\n<\/code><\/pre>\n
        \u5f02\u6b65\u63d0\u4ea4commitAsync()<\/code>\u4e0e\u540c\u6b65\u63d0\u4ea4commitSync()<\/code>\u6700\u5927\u7684\u533a\u522b\u5728\u4e8e\u5f02\u6b65\u63d0\u4ea4\u4e0d\u4f1a\u8fdb\u884c\u91cd\u8bd5\uff0c\u540c\u6b65\u63d0\u4ea4\u4f1a\u4e00\u76f4\u8fdb\u884c\u81ea\u52a8\u91cd\u8bd5\uff0c\u5f53\u7136\u4e5f\u53ef\u4ee5\u901a\u8fc7\u518d\u53d1\u751f\u5f02\u5e38\u65f6\u7ee7\u7eed\u63d0\u4ea4\u7684\u65b9\u5f0f\u6765\u5b8c\u6210\u6b64\u529f\u80fd\u3002<\/p>\n
        \u540c\u6b65+\u5f02\u6b65<\/strong><\/p>\n
        \u53ef\u4ee5\u4f7f\u7528\u540c\u6b65+\u5f02\u6b65\u7684\u5f62\u5f0f\u4fdd\u8bc1\u6570\u636e\u80fd\u591f\u51c6\u786e\u63d0\u4ea4\uff1a<\/p>\n
        while (true) {\n    ConsumerRecords records = consumer.poll(100);\n    for (ConsumerRecord record : records) {\n        log.trace("Kafka\u6d88\u8d39\u4fe1\u606fConsumerRecord={}",record.toString());\n    }\n    try {\n        \/\/\u5148\u4f7f\u7528\u5f02\u6b65\u63d0\u4ea4\u673a\u5236\n        consumer.commitAsync();\n    } catch (CommitFailedException e) {\n        \/\/ todo \u8865\u507f\u673a\u5236\n        log.error("commitAsync failed", e)\n    } finally{\n        try {\n        \/\/\u518d\u4f7f\u7528\u540c\u6b65\u63d0\u4ea4\u673a\u5236\n            consumer.commitSync();\n         }  catch (CommitFailedException e) {\n            \/\/ todo \u8865\u507f\u673a\u5236\n            log.error("commitAsync failed", e)\n        } finally{\n             consumer.close();\n         }\n    }\n}\n\n\n<\/code><\/pre>\n
        \u56db\u3001\u5f02\u5e38\u573a\u666f\u5b9e\u8df5<\/h2>\n
        4.1 \u5f02\u5e38\u91cd\u8bd5<\/h4>\n
        \u6211\u4eec\u7cfb\u7edf\u4e4b\u524d\u9047\u5230\u8fc7\u6d88\u8d39\u8005\u5728\u6d88\u8d39\u6d88\u606f\u65f6\uff0c\u77ed\u65f6\u95f4\u5185\u8fde\u7eed\u62a5\u9519\u3002\u6839\u636e\u73b0\u8c61\u4ee5\u4e3a\u662f\u7cfb\u7edf\u51fa\u73b0\u95ee\u9898\uff0c\u540e\u7eed\u53d1\u73b0\u6240\u6709\u62a5\u9519\u90fd\u662f\u540c\u4e00\u6761\u6d88\u606f\uff0c\u6392\u67e5\u540e\u53d1\u73b0\u662f\u5904\u7406\u6d88\u606f\u8fc7\u7a0b\u4e2d\u5b58\u5728\u672a\u6355\u83b7\u7684\u5f02\u5e38<\/strong>\uff0c\u5bfc\u81f4\u6d88\u606f\u91cd\u8bd5\uff0c\u76f8\u540c\u7684\u95ee\u9898\u5f15\u53d1\u4e86\u8fde\u7eed\u62a5\u9519\u3002<\/p>\n
        JMQ\u5728\u6d88\u8d39\u8fc7\u7a0b\u4e2d\u5982\u679c\u6709\u672a\u6355\u83b7\u7684\u5f02\u5e38<\/strong>\u4f1a\u8ba4\u4e3a\u6d88\u606f\u6d88\u8d39\u5931\u8d25\uff0c\u4f1a\u9996\u5148\u5728\u672c\u5730\u91cd\u8bd5\u4e24\u6b21\u540e\u653e\u5165\u91cd\u8bd5\u961f\u5217\u4e2d\uff0c\u8fdb\u5165\u91cd\u8bd5\u961f\u5217\u7684\u6d88\u606f\uff0c\u4f1a\u6709\u8fc7\u671f\u903b\u8f91\uff0c\u5f53\u8d85\u8fc7\u91cd\u8bd5\u65f6\u95f4\u6216\u8005\u8d85\u8fc7\u6700\u5927\u91cd\u8bd5\u6b21\u6570\u540e(\u9ed8\u8ba43\u5929\u8fc7\u671f)\uff0c\u6d88\u606f\u5c06\u4f1a\u88ab\u4e22\u5f03<\/strong>\u3002\u56e0\u6b64\u5728\u5904\u7406\u6d88\u606f\u65f6\u9700\u8981\u8003\u8651\u5982\u679c\u51fa\u73b0\u5f02\u5e38\u540e\u7684\u5904\u7406\u573a\u666f\uff0c\u9009\u62e9\u662f\u91cd\u8bd5\u8fd8\u662f\u5ffd\u7565\u8fd8\u662f\u8bb0\u5f55\u6570\u636e\u540e\u544a\u8b66\u3002<\/p><\/blockquote>\n
        \u56e0\u6b64\u6211\u4eec\u5728\u6d88\u8d39\u6d88\u606f\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5c24\u5176\u662f\u91c7\u7528pull\u6a21\u5f0f\uff0c\u4e00\u5b9a\u8981\u6839\u636e\u4e1a\u52a1\u573a\u666f\u6ce8\u610f\u5f02\u5e38\u7684\u6355\u83b7\u3002\u5426\u5219\u5c0f\u5219\u5f71\u54cd\u672c\u6761\u6d88\u606f\uff0c\u5927\u5219\u672c\u6279\u6b21\u540e\u7eed\u6240\u6709\u6d88\u606f\u90fd\u53ef\u80fd\u4e22\u5931\u3002<\/strong><\/p>\n
        \/\/\u6bcf\u96941min\u62c9\u53d6\u6d88\u606f\nConsumerRecords<String, String> records = consumer.poll(Duration.ofSeconds(60L));\nfor (ConsumerRecord<String, String> record : records) {\n    try {\n        \/\/doing\n    } catch (Exception e) {\n        \/\/\u5982\u679c\u6b64\u5904\u672a\u6355\u83b7\u6d88\u606f\uff0c\u4f1a\u76f4\u63a5\u5bfc\u81f4for\u5faa\u73af\u9000\u51fa\uff0c\u540e\u7eed\u6240\u6709\u6d88\u606f\u90fd\u5c06\u4e22\u5931\n        log.error("Bdp\u76d1\u542c\u4efb\u52a1\u6267\u884c\u5931\u8d25, taskName:{}", taskName, e);\n    }\n}\n\n\n<\/code><\/pre>\n
        4.2 \u672c\u5730\u91cd\u8bd5\u4e0e\u670d\u52a1\u7aef\u91cd\u8bd5<\/h4>\n
        \u7cfb\u7edf\u8fd8\u9047\u5230\u8fc7\u5728JMQ\u670d\u52a1\u7aef\u914d\u7f6e\u4e86\u6d88\u8d39\u5931\u8d25\u91cd\u8bd5\u7684\u903b\u8f91\uff0c\u4f8b\u5982\u91cd\u8bd5\u591a\u5c11\u6b21\u95f4\u9694\u591a\u4e45\uff0c\u4f46\u662f\u5728\u6d88\u8d39\u5931\u8d25\u4e4b\u540e\uff0c\u53d1\u73b0\u91cd\u8bd5\u7684\u903b\u8f91\u5e76\u6ca1\u6709\u6309\u7167\u914d\u7f6e\u7684\u903b\u8f91\u8d70\u3002\u8054\u7cfb\u8fd0\u7ef4\u5e2e\u5fd9\u6392\u67e5\u540e\u53d1\u73b0\uff1a<\/p>\n
        \u91cd\u8bd5\u5206\u4e3a\u672c\u5730\u91cd\u8bd5\u548c\u670d\u52a1\u7aef\u91cd\u8bd5\n\n\n<\/code><\/pre>\n
        \u6839\u636e4.1\u6211\u4eec\u77e5\u9053\u6d88\u8d39\u5931\u8d25\u540e\uff0c\u4f1a\u9996\u5148\u5728\u672c\u5730\u91cd\u8bd5<\/strong>\uff0c\u672c\u5730\u91cd\u8bd5\u5931\u8d25\u540e\u4f1a\u653e\u5165\u91cd\u8bd5\u961f\u5217\uff0c\u5219\u6b64\u65f6\u8fdb\u5165\u670d\u52a1\u7aef\u91cd\u8bd5<\/strong>\uff0c\u4e24\u5957\u91cd\u8bd5\u9700\u8981\u4e24\u5957\u914d\u7f6e\uff0c\u672c\u5730\u7684\u91cd\u8bd5\u914d\u7f6e\u5728\u672c\u5730\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u3002<\/p>\n
        \u672c\u5730\u914d\u7f6e\u5982\u4e0b\uff1a<\/p>\n
        <jmq:consumer id="apiConsumer" transport="jmq.apilog.transport">\n    <!--\u914d\u7f6e\u95f4\u96941\u79d2\uff0c\u91cd\u8bd53\u6b21-->\n    <jmq:listener topic="${jmq.topic.apilog}" listener="apiLogMessageListener" retryDelay="1000" maxRetrys="3"\/>\n<\/jmq:consumer>\n\n\n<\/code><\/pre>\n
        \u670d\u52a1\u7aef\u91cd\u8bd5\u914d\u7f6e\uff1a<\/p>\n
        \"image.png\"<\/p>\n
        \n
        \u4f5c\u8005\uff1a\u4eac\u4e1c\u79d1\u6280 \u97e9\u56fd\u51ef<\/p>\n
        \u6765\u6e90\uff1a\u4eac\u4e1c\u4e91\u5f00\u53d1\u8005\u793e\u533a \u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u6e90<\/p>\n<\/blockquote>\n
        https:\/\/segmentfault.com\/a\/1190000044261551<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
        \u4e00\u3001\u4ec0\u4e48\u662fKafka MQ\u6d88\u606f\u961f\u5217\u4f5c\u4e3a\u6700\u5e38\u7528\u7684\u4e2d\u95f4\u4ef6\u4e4b\u4e00\uff0c\u5176\u4e3b\u8981\u7279\u6027\u6709\uff1a\u89e3\u8026\u3001\u5f02\u6b65\u3001\u9650\u6d41\/\u524a\u5cf0\u3002 Kafka  […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10008341","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008341","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10008341"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008341\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}