{"id":1136,"date":"2023-05-28T02:28:45","date_gmt":"2023-05-27T18:28:45","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=1136"},"modified":"2023-05-28T02:46:00","modified_gmt":"2023-05-27T18:46:00","slug":"%e4%b8%80%e7%a2%b0%e5%b0%b1%e5%a4%b4%e7%96%bc%e7%9a%84-kafka-%e6%b6%88%e6%81%af%e9%87%8d%e5%a4%8d%e9%97%ae%e9%a2%98%ef%bc%8c%e7%ab%8b%e9%a9%ac%e8%a7%a3%e5%86%b3%ef%bc%81","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/kafka\/%e4%b8%80%e7%a2%b0%e5%b0%b1%e5%a4%b4%e7%96%bc%e7%9a%84-kafka-%e6%b6%88%e6%81%af%e9%87%8d%e5%a4%8d%e9%97%ae%e9%a2%98%ef%bc%8c%e7%ab%8b%e9%a9%ac%e8%a7%a3%e5%86%b3%ef%bc%81\/","title":{"rendered":"\u4e00\u78b0\u5c31\u5934\u75bc\u7684 Kafka \u6d88\u606f\u91cd\u590d\u95ee\u9898\uff0c\u7acb\u9a6c\u89e3\u51b3\uff01"},"content":{"rendered":"
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\u539f\u6587\uff1ajuejin.cn\/post\/7172897190627508237<\/span><\/p>\n

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\u4e00\u3001\u524d\u8a00<\/strong><\/span><\/p>\n<\/section>\n

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<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n

\u6570\u636e\u91cd\u590d\u8fd9\u4e2a\u95ee\u9898\u5176<\/span>\u5b9e\u4e5f\u662f\u633a\u6b63<\/span>\u5e38\uff0c\u5168\u94fe\u8def\u90fd\u6709\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u91cd<\/span>\u590d\u3002<\/span><\/p>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n

\u901a\u5e38\uff0c\u6d88\u606f\u6d88\u8d39\u65f6\u5019\u90fd\u4f1a\u8bbe\u7f6e\u4e00\u5b9a\u91cd\u8bd5\u6b21\u6570\u6765\u907f\u514d\u7f51\u7edc\u6ce2\u52a8\u9020\u6210\u7684\u5f71\u54cd\uff0c\u540c\u65f6\u5e26\u6765\u526f\u4f5c\u7528\u662f\u53ef\u80fd\u51fa\u73b0\u6d88\u606f\u91cd\u590d\u3002<\/span><\/p>\n

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\u6574\u7406\u4e0b\u6d88\u606f\u91cd\u590d\u7684\u51e0\u4e2a\u573a\u666f\uff1a<\/span><\/strong><\/span><\/h4>\n<\/section>\n<\/section>\n
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  1. \n

    \u751f\u4ea7\u7aef\uff1a<\/strong>\u00a0\u9047\u5230\u5f02\u5e38\uff0c\u57fa\u672c\u89e3\u51b3\u63aa\u65bd\u90fd\u662f\u00a0\u91cd\u8bd5<\/strong>\u3002<\/span><\/p>\n

      \n
    • \n
      \u573a\u666f\u4e00\uff1a<\/span>leader<\/span><\/code>\u5206\u533a\u4e0d\u53ef\u7528\u4e86\uff0c\u629b\u00a0<\/span>LeaderNotAvailableException<\/span><\/code>\u00a0\u5f02\u5e38\uff0c\u7b49\u5f85\u9009\u51fa\u65b0\u00a0<\/span>leader<\/span><\/code>\u00a0\u5206\u533a\u3002<\/span><\/section>\n<\/li>\n
    • \n
      \u573a\u666f\u4e8c\uff1a<\/span>Controller<\/span><\/code>\u00a0\u6240\u5728\u00a0<\/span>Broker<\/span><\/code>\u00a0\u6302\u4e86\uff0c\u629b\u00a0<\/span>NotControllerException<\/span><\/code>\u00a0\u5f02\u5e38\uff0c\u7b49\u5f85\u00a0<\/span>Controller<\/span><\/code>\u00a0\u91cd\u65b0\u9009\u4e3e\u3002<\/span><\/section>\n<\/li>\n
    • \n
      \u573a\u666f\u4e09\uff1a\u7f51\u7edc\u5f02\u5e38\u3001\u65ad\u7f51\u3001\u7f51\u7edc\u5206\u533a\u3001\u4e22\u5305\u7b49\uff0c\u629b\u00a0<\/span>NetworkException<\/span><\/code>\u00a0\u5f02\u5e38\uff0c\u7b49\u5f85\u7f51\u7edc\u6062\u590d\u3002<\/span><\/section>\n<\/li>\n<\/ul>\n<\/li>\n
    • \n

      \u6d88\u8d39\u7aef\uff1a<\/strong>\u00a0<\/span>poll<\/span><\/code>\u00a0\u4e00\u6279\u6570\u636e\uff0c\u5904\u7406\u5b8c\u6bd5\u8fd8\u6ca1\u63d0\u4ea4\u00a0<\/span>offset<\/span><\/code>\u00a0\uff0c\u673a\u5b50\u5b95\u673a\u91cd\u542f\u4e86\uff0c\u53c8\u4f1a\u00a0<\/span>poll<\/span><\/code>\u00a0\u4e0a\u6279\u6570\u636e\uff0c\u518d\u5ea6\u6d88\u8d39\u5c31\u9020\u6210\u4e86\u6d88\u606f\u91cd\u590d\u3002<\/span><\/p>\n<\/li>\n<\/ol>\n

      \u00a0<\/span><\/h3>\n
      \n
      \n

      \u600e\u4e48\u89e3\u51b3\uff1f<\/span><\/strong><\/span><\/h4>\n<\/section>\n<\/section>\n

      \u5148\u6765\u4e86\u89e3\u4e0b\u6d88\u606f\u7684\u4e09\u79cd\u6295\u9012\u8bed\u4e49\uff1a<\/strong><\/p>\n

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      • \n
        \u6700\u591a\u4e00\u6b21\uff08<\/strong>at most once<\/code>\uff09\uff1a<\/strong>\u00a0\u6d88\u606f\u53ea\u53d1\u4e00\u6b21\uff0c\u6d88\u606f\u53ef\u80fd\u4f1a\u4e22\u5931\uff0c\u4f46\u7edd\u4e0d\u4f1a\u88ab\u91cd\u590d\u53d1\u9001\u3002\u4f8b\u5982\uff1a<\/span>mqtt<\/span><\/code>\u00a0\u4e2d\u00a0<\/span>QoS = 0<\/span><\/code>\u3002<\/span><\/section>\n<\/li>\n
      • \n
        \u81f3\u5c11\u4e00\u6b21\uff08<\/strong>at least once<\/code>\uff09\uff1a<\/strong>\u00a0\u6d88\u606f\u81f3\u5c11\u53d1\u4e00\u6b21\uff0c\u6d88\u606f\u4e0d\u4f1a\u4e22\u5931\uff0c\u4f46\u6709\u53ef\u80fd\u88ab\u91cd\u590d\u53d1\u9001\u3002\u4f8b\u5982\uff1a<\/span>mqtt<\/span><\/code>\u00a0\u4e2d\u00a0<\/span>QoS = 1<\/span><\/code><\/section>\n<\/li>\n
      • \n
        \u7cbe\u786e\u4e00\u6b21\uff08<\/strong>exactly once<\/code>\uff09\uff1a<\/strong>\u00a0\u6d88\u606f\u7cbe\u786e\u53d1\u4e00\u6b21\uff0c\u6d88\u606f\u4e0d\u4f1a\u4e22\u5931\uff0c\u4e5f\u4e0d\u4f1a\u88ab\u91cd\u590d\u53d1\u9001\u3002\u4f8b\u5982\uff1a<\/span>mqtt<\/span><\/code>\u00a0\u4e2d\u00a0<\/span>QoS = 2<\/span><\/code>\u3002<\/span><\/section>\n<\/li>\n<\/ul>\n
        \n
        \n

        \u4e86\u89e3\u4e86\u8fd9\u4e09\u79cd\u8bed\u4e49\uff0c\u518d\u6765\u770b\u5982\u4f55\u89e3\u51b3\u6d88\u606f\u91cd\u590d\uff0c\u5373\u5982\u4f55\u5b9e\u73b0\u7cbe\u51c6\u4e00\u6b21\uff0c\u53ef\u5206\u4e3a\u4e09\u79cd\u65b9\u6cd5\uff1a<\/span><\/strong><\/span><\/h4>\n<\/section>\n<\/section>\n
          \n
        1. \n
          Kafka<\/code>\u00a0\u5e42\u7b49\u6027\u00a0Producer<\/code>\uff1a<\/strong>\u00a0\u4fdd\u8bc1\u751f\u4ea7\u7aef\u53d1\u9001\u6d88\u606f\u5e42\u7b49\u3002\u5c40\u9650\u6027\uff0c\u662f\u53ea\u80fd\u4fdd\u8bc1\u5355\u5206\u533a\u4e14\u5355\u4f1a\u8bdd\uff08\u91cd\u542f\u540e\u5c31\u7b97\u65b0\u4f1a\u8bdd\uff09<\/span><\/section>\n<\/li>\n
        2. \n
          Kafka<\/code>\u00a0\u4e8b\u52a1\uff1a<\/strong>\u00a0\u4fdd\u8bc1\u751f\u4ea7\u7aef\u53d1\u9001\u6d88\u606f\u5e42\u7b49\u3002\u89e3\u51b3\u5e42\u7b49\u00a0<\/span>Producer<\/span><\/code>\u00a0\u7684\u5c40\u9650\u6027\u3002<\/span><\/section>\n<\/li>\n
        3. \n
          \u6d88\u8d39\u7aef\u5e42\u7b49\uff1a\u00a0\u4fdd\u8bc1\u6d88\u8d39\u7aef\u63a5\u6536\u6d88\u606f\u5e42\u7b49\u3002\u8538\u5e95\u65b9\u6848\u3002<\/span><\/section>\n<\/li>\n<\/ol>\n

          1\uff09<\/span>Kafka<\/code>\u00a0\u5e42\u7b49\u6027\u00a0<\/span>Producer<\/code><\/h4>\n
          \n

          \u5e42\u7b49\u6027\u6307<\/span><\/strong>\uff1a\u65e0\u8bba\u6267\u884c\u591a\u5c11\u6b21\u540c\u6837\u7684\u8fd0\u7b97\uff0c\u7ed3\u679c\u90fd\u662f\u76f8\u540c\u7684\u3002\u5373\u4e00\u6761\u547d\u4ee4\uff0c\u4efb\u610f\u591a\u6b21\u6267\u884c\u6240\u4ea7\u751f\u7684\u5f71\u54cd\u5747\u4e0e\u4e00\u6b21\u6267\u884c\u7684\u5f71\u54cd\u76f8\u540c\u3002<\/span><\/p>\n<\/blockquote>\n

          \u5e42\u7b49\u6027\u4f7f\u7528\u793a\u4f8b\uff1a\u5728\u751f\u4ea7\u7aef\u6dfb\u52a0\u5bf9\u5e94\u914d\u7f6e\u5373\u53ef<\/strong><\/span><\/p>\n

          \n
          Properties props =\u00a0new<\/span>\u00a0Properties();
          props.put(\"enable.idempotence\"<\/span>, ture);\u00a0\/\/ 1. \u8bbe\u7f6e\u5e42\u7b49<\/span>
          props.put(\"acks\"<\/span>,\u00a0\"all\"<\/span>);\u00a0\/\/ 2. \u5f53 enable.idempotence \u4e3a true\uff0c\u8fd9\u91cc\u9ed8\u8ba4\u4e3a all<\/span>
          props.put(\"max.in.flight.requests.per.connection\"<\/span>,\u00a05<\/span>);\u00a0\/\/ 3. \u6ce8\u610f<\/span><\/code><\/pre>\n<\/section>\n
            \n
          1. \n
            \u8bbe\u7f6e\u5e42\u7b49\uff0c\u542f\u52a8\u5e42\u7b49\u3002<\/span><\/section>\n<\/li>\n
          2. \n
            \u914d\u7f6e\u00a0<\/span>acks<\/span><\/code>\uff0c\u6ce8\u610f\uff1a\u4e00\u5b9a\u8981\u8bbe\u7f6e\u00a0<\/span>acks=all<\/span><\/code>\uff0c\u5426\u5219\u4f1a\u629b\u5f02\u5e38\u3002<\/span><\/section>\n<\/li>\n
          3. \n
            \u914d\u7f6e\u00a0<\/strong>max.in.flight.requests.per.connection<\/code>\u00a0\u9700\u8981\u00a0<= 5<\/code><\/strong>\uff0c\u5426\u5219\u4f1a\u629b\u5f02\u5e38\u00a0<\/span>OutOfOrderSequenceException<\/span><\/code>\u3002<\/span><\/p>\n
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            • \n
              0.11 >= Kafka < 1.1<\/span><\/code>,\u00a0<\/span>max.in.flight.request.per.connection = 1<\/span><\/code><\/p>\n<\/li>\n
            • \n
              Kafka >= 1.1<\/span><\/code>,\u00a0<\/span>max.in.flight.request.per.connection <= 5<\/span><\/code><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
              \n
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              \n
              \u4e3a\u4e86\u66f4\u597d\u7406\u89e3\uff0c\u9700\u8981\u4e86\u89e3\u4e0b\u00a0<\/strong>Kafka \u5e42\u7b49\u673a\u5236\uff1a<\/strong><\/span><\/strong><\/span><\/h4>\n<\/section>\n<\/section>\n
                \n
              1. \n
                Producer<\/span><\/code>\u00a0\u6bcf\u6b21\u542f\u52a8\u540e\uff0c\u4f1a\u5411\u00a0<\/span>Broker<\/span><\/code>\u00a0\u7533\u8bf7\u4e00\u4e2a\u5168\u5c40\u552f\u4e00\u7684\u00a0<\/span>pid<\/span><\/code>\u3002\uff08\u91cd\u542f\u540e\u00a0<\/span>pid<\/span><\/code>\u00a0\u4f1a\u53d8\u5316\uff0c\u8fd9\u4e5f\u662f\u5f0a\u7aef\u4e4b\u4e00\uff09<\/span><\/section>\n<\/li>\n
              2. \n
                Sequence Numbe<\/span><\/code>\uff1a\u9488\u5bf9\u6bcf\u4e2a\u00a0<\/span><Topic, Partition><\/span><\/code>\u00a0\u90fd\u5bf9\u5e94\u4e00\u4e2a\u4ece0\u5f00\u59cb\u5355\u8c03\u9012\u589e\u7684\u00a0<\/span>Sequence<\/span><\/code>\uff0c\u540c\u65f6\u00a0<\/span>Broker<\/span><\/code>\u7aef\u4f1a\u7f13\u5b58\u8fd9\u4e2a\u00a0<\/span>seq num<\/span><\/code><\/section>\n<\/li>\n
              3. \n
                \u5224\u65ad\u662f\u5426\u91cd\u590d\uff1a<\/strong>\u00a0\u62ff\u00a0<\/span><pid, seq num><\/span><\/code>\u00a0\u53bb\u00a0<\/span>Broker<\/span><\/code>\u00a0\u91cc\u5bf9\u5e94\u7684\u961f\u5217\u00a0<\/span>ProducerStateEntry.Queue<\/span><\/code>\uff08\u9ed8\u8ba4\u961f\u5217\u957f\u5ea6\u4e3a 5\uff09\u67e5\u8be2\u662f\u5426\u5b58\u5728<\/span><\/p>\n
                  \n
                • \n
                  \u5982\u679c\u00a0<\/span>nextSeq == lastSeq + 1<\/span><\/code>\uff0c\u5373\u00a0<\/span>\u670d\u52a1\u7aefseq + 1 == \u751f\u4ea7\u4f20\u5165seq<\/span><\/code>\uff0c\u5219\u63a5\u6536\u3002<\/span><\/p>\n<\/li>\n
                • \n
                  \u5982\u679c\u00a0<\/span>nextSeq == 0 && lastSeq == Int.MaxValue<\/span><\/code>\uff0c\u5373\u521a\u521d\u59cb\u5316\uff0c\u4e5f\u63a5\u6536\u3002<\/span><\/p>\n<\/li>\n
                • \n
                  \u53cd\u4e4b\uff0c\u8981\u4e48\u91cd\u590d\uff0c\u8981\u4e48\u4e22\u6d88\u606f\uff0c\u5747\u62d2\u7edd\u3002<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
                  \n
                  \n
                  \u8fd9\u79cd\u8bbe\u8ba1\u9488\u5bf9\u89e3\u51b3\u4e86\u4e24\u4e2a\u95ee\u9898\uff1a<\/span><\/strong><\/span><\/h4>\n<\/section>\n<\/section>\n
                    \n
                  1. \n
                    \u6d88\u606f\u91cd\u590d\uff1a<\/strong>\u00a0\u573a\u666f\u00a0<\/span>Broker<\/span><\/code>\u00a0\u4fdd\u5b58\u6d88\u606f\u540e\u8fd8\u6ca1\u53d1\u9001\u00a0<\/span>ack<\/span><\/code>\u00a0\u5c31\u5b95\u673a\u4e86\uff0c\u8fd9\u65f6\u5019\u00a0<\/span>Producer<\/span><\/code>\u00a0\u5c31\u4f1a\u91cd\u8bd5\uff0c\u8fd9\u5c31\u9020\u6210\u6d88\u606f\u91cd\u590d\u3002<\/span><\/section>\n<\/li>\n
                  2. \n
                    \u6d88\u606f\u4e71\u5e8f\uff1a<\/strong>\u00a0\u907f\u514d\u573a\u666f\uff0c\u524d\u4e00\u6761\u6d88\u606f\u53d1\u9001\u5931\u8d25\u800c\u5176\u540e\u4e00\u6761\u53d1\u9001\u6210\u529f\uff0c\u524d\u4e00\u6761\u6d88\u606f\u91cd\u8bd5\u540e\u6210\u529f\uff0c\u9020\u6210\u7684\u6d88\u606f\u4e71\u5e8f\u3002<\/span><\/section>\n<\/li>\n<\/ol>\n
                    \n
                    \n
                    \u90a3\u4ec0\u4e48\u65f6\u5019\u8be5\u4f7f\u7528\u5e42\u7b49\uff1a<\/span><\/strong><\/span><\/h4>\n<\/section>\n<\/section>\n
                      \n
                    1. \n
                      \u5982\u679c\u5df2\u7ecf\u4f7f\u7528\u00a0<\/span>acks=all<\/span><\/code>\uff0c\u4f7f\u7528\u5e42\u7b49\u4e5f\u53ef\u4ee5\u3002<\/span><\/section>\n<\/li>\n
                    2. \n
                      \u5982\u679c\u5df2\u7ecf\u4f7f\u7528\u00a0<\/span>acks=0<\/span><\/code>\u00a0\u6216\u8005\u00a0<\/span>acks=1<\/span><\/code>\uff0c\u8bf4\u660e\u4f60\u7684\u7cfb\u7edf\u8ffd\u6c42\u9ad8\u6027\u80fd\uff0c\u5bf9\u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42\u4e0d\u9ad8\u3002\u4e0d\u8981\u4f7f\u7528\u5e42\u7b49\u3002<\/span><\/p>\n<\/li>\n<\/ol>\n
                      \n
                      2\uff09<\/span>Kafka<\/code>\u00a0\u4e8b\u52a1<\/span><\/h4>\n
                      \n
                      \u4f7f\u7528\u00a0<\/span>Kafka<\/span><\/code>\u00a0\u4e8b\u52a1\u89e3\u51b3\u5e42\u7b49\u7684\u5f0a\u7aef\uff1a\u5355\u4f1a\u8bdd\u4e14\u5355\u5206\u533a\u5e42\u7b49\u3002<\/span><\/p>\n
                      Tips<\/code>\uff1a<\/strong>\u00a0\u8fd9\u5757\u7bc7\u5e45\u8f83\u957f\uff0c\u8fd9\u5148\u7a0d\u5fae\u63d0\u53ca\u4e0b\u4f7f\u7528\uff0c\u4e4b\u540e\u53e6\u8d77\u4e00\u7bc7\u3002<\/span><\/p>\n<\/blockquote>\n
                      \u4e8b\u52a1\u4f7f\u7528\u793a\u4f8b\uff1a\u5206\u4e3a\u751f\u4ea7\u7aef \u548c \u6d88\u8d39\u7aef<\/strong><\/span><\/p>\n
                      \n
                      Properties props =\u00a0new<\/span>\u00a0Properties();
                      props.put(\"enable.idempotence\"<\/span>, ture);\u00a0\/\/ 1. \u8bbe\u7f6e\u5e42\u7b49<\/span>
                      props.put(\"acks\"<\/span>,\u00a0\"all\"<\/span>);\u00a0\/\/ 2. \u5f53 enable.idempotence \u4e3a true\uff0c\u8fd9\u91cc\u9ed8\u8ba4\u4e3a all<\/span>
                      props.put(\"max.in.flight.requests.per.connection\"<\/span>,\u00a05<\/span>);\u00a0\/\/ 3. \u6700\u5927\u7b49\u5f85\u6570<\/span>
                      props.put(\"transactional.id\"<\/span>,\u00a0\"my-transactional-id\"<\/span>);\u00a0\/\/ 4. \u8bbe\u5b9a\u4e8b\u52a1 id<\/span>

                      Producer<String<\/span>,\u00a0String<\/span>> producer =\u00a0new<\/span>\u00a0KafkaProducer<String<\/span>,\u00a0String<\/span>>(props);

                      \/\/ \u521d\u59cb\u5316\u4e8b\u52a1<\/span>
                      producer.initTransactions();

                      try<\/span>{
                      \u00a0\u00a0\u00a0\u00a0\/\/ \u5f00\u59cb\u4e8b\u52a1<\/span>
                      \u00a0\u00a0\u00a0\u00a0producer.beginTransaction();

                      \u00a0\u00a0\u00a0\u00a0\/\/ \u53d1\u9001\u6570\u636e<\/span>
                      \u00a0\u00a0\u00a0\u00a0producer.send(new<\/span>\u00a0ProducerRecord<String<\/span>,\u00a0String<\/span>>(\"Topic\"<\/span>,\u00a0\"Key\"<\/span>,\u00a0\"Value\"<\/span>));
                      \u00a0
                      \u00a0\u00a0\u00a0\u00a0\/\/ \u6570\u636e\u53d1\u9001\u53ca Offset \u53d1\u9001\u5747\u6210\u529f\u7684\u60c5\u51b5\u4e0b\uff0c\u63d0\u4ea4\u4e8b\u52a1<\/span>
                      \u00a0\u00a0\u00a0\u00a0producer.commitTransaction();
                      }\u00a0catch<\/span>\u00a0(ProducerFencedException | OutOfOrderSequenceException | AuthorizationException e) {
                      \u00a0\u00a0\u00a0\u00a0\/\/ \u6570\u636e\u53d1\u9001\u6216\u8005 Offset \u53d1\u9001\u51fa\u73b0\u5f02\u5e38\u65f6\uff0c\u7ec8\u6b62\u4e8b\u52a1<\/span>
                      \u00a0\u00a0\u00a0\u00a0producer.abortTransaction();
                      }\u00a0finally<\/span>\u00a0{
                      \u00a0\u00a0\u00a0\u00a0\/\/ \u5173\u95ed Producer \u548c Consumer<\/span>
                      \u00a0\u00a0\u00a0\u00a0producer.close();
                      \u00a0\u00a0\u00a0\u00a0consumer.close();
                      }<\/code><\/pre>\n<\/section>\n
                      \u8fd9\u91cc\u6d88\u8d39\u7aef\u00a0<\/strong>Consumer<\/code>\u00a0\u9700\u8981\u8bbe\u7f6e\u4e0b\u914d\u7f6e\uff1aisolation.level<\/code>\u00a0\u53c2\u6570<\/strong><\/span><\/p>\n
                        \n
                      • \n
                        read_uncommitted<\/code>\uff1a<\/strong>\u00a0\u8fd9\u662f\u9ed8\u8ba4\u503c\uff0c\u8868\u660e\u00a0<\/span>Consumer<\/span><\/code>\u00a0\u80fd\u591f\u8bfb\u53d6\u5230\u00a0<\/span>Kafka<\/span><\/code>\u00a0\u5199\u5165\u7684\u4efb\u4f55\u6d88\u606f\uff0c\u4e0d\u8bba\u4e8b\u52a1\u578b\u00a0<\/span>Producer<\/span><\/code>\u00a0\u63d0\u4ea4\u4e8b\u52a1\u8fd8\u662f\u7ec8\u6b62\u4e8b\u52a1\uff0c\u5176\u5199\u5165\u7684\u6d88\u606f\u90fd\u53ef\u4ee5\u8bfb\u53d6\u3002\u5982\u679c\u4f60\u7528\u4e86\u4e8b\u52a1\u578b\u00a0<\/span>Producer<\/span><\/code>\uff0c\u90a3\u4e48\u5bf9\u5e94\u7684\u00a0<\/span>Consumer<\/span><\/code>\u00a0\u5c31\u4e0d\u8981\u4f7f\u7528\u8fd9\u4e2a\u503c\u3002<\/span><\/p>\n<\/li>\n
                      • \n
                        read_committed<\/code>\uff1a<\/strong>\u00a0\u8868\u660e\u00a0<\/span>Consumer<\/span><\/code>\u00a0\u53ea\u4f1a\u8bfb\u53d6\u4e8b\u52a1\u578b\u00a0<\/span>Producer<\/span><\/code>\u00a0\u6210\u529f\u63d0\u4ea4\u4e8b\u52a1\u5199\u5165\u7684\u6d88\u606f\u3002\u5f53\u7136\u4e86\uff0c\u5b83\u4e5f\u80fd\u770b\u5230\u975e\u4e8b\u52a1\u578b\u00a0<\/span>Producer<\/span><\/code>\u00a0\u5199\u5165\u7684\u6240\u6709\u6d88\u606f\u3002<\/span><\/section>\n<\/li>\n<\/ul>\n
                        \n
                        3\uff09\u6d88\u8d39\u7aef\u5e42\u7b49<\/span><\/h4>\n
                        \n
                        \u201c\u5982\u4f55\u89e3\u51b3\u6d88\u606f\u91cd\u590d\uff1f\u201d \u8fd9\u4e2a\u95ee\u9898\uff0c\u5176\u5b9e\u6362\u4e00\u79cd\u8bf4\u6cd5\uff1a\u5c31\u662f\u5982\u4f55\u89e3\u51b3\u6d88\u8d39\u7aef\u5e42\u7b49\u6027\u95ee\u9898\u3002<\/span><\/p>\n
                        \u53ea\u8981\u6d88\u8d39\u7aef\u5177\u5907\u4e86\u5e42\u7b49\u6027\uff0c\u90a3\u4e48\u91cd\u590d\u6d88\u8d39\u6d88\u606f\u7684\u95ee\u9898\u4e5f\u5c31\u89e3\u51b3\u4e86\u3002<\/span><\/p>\n<\/blockquote>\n
                        \u5178\u578b\u7684\u65b9\u6848\u662f\u4f7f\u7528\uff1a\u6d88\u606f\u8868\uff0c\u6765\u53bb\u91cd\uff1a<\/strong><\/span><\/p>\n
                          \n
                        • \n
                          \u4e0a\u8ff0\u6817\u5b50\u4e2d\uff0c\u6d88\u8d39\u7aef\u62c9\u53d6\u5230\u4e00\u6761\u6d88\u606f\u540e\uff0c\u5f00\u542f\u4e8b\u52a1\uff0c\u5c06\u6d88\u606f<\/span>Id<\/span><\/code>\u00a0\u65b0\u589e\u5230\u672c\u5730\u6d88\u606f\u8868\u4e2d\uff0c\u540c\u65f6\u66f4\u65b0\u8ba2\u5355\u4fe1\u606f\u3002<\/span><\/p>\n<\/li>\n
                        • \n
                          \u5982\u679c\u6d88\u606f\u91cd\u590d\uff0c\u5219\u65b0\u589e\u64cd\u4f5c\u00a0<\/span>insert<\/span><\/code>\u00a0\u4f1a\u5f02\u5e38\uff0c\u540c\u65f6\u89e6\u53d1\u4e8b\u52a1\u56de\u6eda\u3002<\/span><\/p>\n<\/li>\n<\/ul>\n
                          <\/h2>\n
                          \n
                          \n
                          \n
                          \n
                          \n
                          \n
                          \u4e8c\u3001\u6848\u4f8b\uff1a<\/strong>Kafka \u5e42\u7b49\u6027 Producer \u4f7f\u7528<\/strong><\/span><\/p>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n
                          \n
                          \u73af\u5883\u642d\u5efa\u53ef\u53c2\u8003\uff1ahttps:\/\/developer.confluent.io\/tutorials\/message-ordering\/kafka.html#view-all-records-in-the-topic<\/span><\/p>\n<\/blockquote>\n
                          \u51c6\u5907\u5de5\u4f5c\u5982\u4e0b\uff1a<\/strong><\/span><\/p>\n
                          1\u3001Zookeeper<\/span><\/code>\uff1a\u672c\u5730\u4f7f\u7528\u00a0<\/span>Docker<\/span><\/code>\u00a0\u542f\u52a8<\/span><\/section>\n
                          \n
                          $<\/span>\u00a0docker run -d --name zookeeper -p 2181:2181 zookeeper
                          a86dff3689b68f6af7eb3da5a21c2dba06e9623f3c961154a8bbbe3e9991dea4<\/code><\/pre>\n<\/section>\n
                          \n
                          2\u3001Kafka<\/span><\/code>\uff1a\u7248\u672c\u00a0<\/span>2.7.1<\/span><\/code>\uff0c\u6e90\u7801\u7f16\u8bd1\u542f\u52a8\uff08\u770b\u4e0a\u6587\u6e90\u7801\u642d\u5efa\u542f\u52a8\uff09<\/span><\/section>\n
                          3\u3001\u542f\u52a8\u751f\u4ea7\u8005\uff1a<\/span>Kafka<\/span><\/code>\u00a0\u6e90\u7801\u4e2d\u00a0<\/span>exmaple<\/span><\/code>\u00a0\u4e2d<\/span><\/section>\n
                          4\u3001\u542f\u52a8\u6d88\u606f\u8005\uff1a\u53ef\u4ee5\u7528\u00a0<\/span>Kafka<\/span><\/code>\u00a0\u63d0\u4f9b\u7684\u811a\u672c<\/span><\/p>\n
                          \n
                          #<\/span>\u00a0\u4e3e\u4e2a\u6817\u5b50\uff1atopic \u9700\u8981\u81ea\u5df1\u53bb\u4fee\u6539
                          $<\/span>\u00a0cd<\/span>\u00a0.\/kafka-2.7.1-src\/bin
                          $<\/span>\u00a0.\/kafka-console-producer.sh --broker-list localhost:9092 --topic test_topic<\/code><\/pre>\n<\/section>\n
                          \u521b\u5efa\u00a0<\/strong>topic<\/code>\u00a0\uff1a<\/strong>\u00a01\u526f\u672c\uff0c2 \u5206\u533a<\/span><\/p>\n
                          \n
                          $<\/span>\u00a0.\/kafka-topics.sh --bootstrap-server localhost:9092 --topic myTopic --create --replication-factor 1 --partitions 2

                          #<\/span>\u00a0\u67e5\u770b
                          $<\/span>\u00a0.\/kafka-topics.sh --bootstrap-server broker:9092 --topic myTopic --describe<\/code><\/pre>\n<\/section>\n
                          \u751f\u4ea7\u8005\u4ee3\u7801\uff1a<\/strong><\/span><\/p>\n
                          \n
                          public<\/span>\u00a0class<\/span>\u00a0KafkaProducerApplication {

                          \u00a0\u00a0\u00a0\u00a0private<\/span>\u00a0final Producer<String<\/span>,\u00a0String<\/span>> producer;
                          \u00a0\u00a0\u00a0\u00a0final\u00a0String<\/span>\u00a0outTopic;

                          \u00a0\u00a0\u00a0\u00a0public<\/span>\u00a0KafkaProducerApplication(final Producer<String<\/span>,\u00a0String<\/span>> producer,
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0final\u00a0String<\/span>\u00a0topic) {
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0this<\/span>.producer = producer;
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0outTopic = topic;
                          \u00a0\u00a0\u00a0\u00a0}

                          \u00a0\u00a0\u00a0\u00a0public<\/span>\u00a0void<\/span>\u00a0produce(final\u00a0String<\/span>\u00a0message) {
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0final\u00a0String<\/span>[] parts = message.split(\"-\"<\/span>);
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0final\u00a0String<\/span>\u00a0key, value;
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(parts.length >\u00a01<\/span>) {
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0key = parts[0<\/span>];
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0value = parts[1<\/span>];
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0else<\/span>\u00a0{
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0key =\u00a0null<\/span>;
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0value = parts[0<\/span>];
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0final ProducerRecord<String<\/span>,\u00a0String<\/span>> producerRecord
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0new<\/span>\u00a0ProducerRecord<>(outTopic, key, value);
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0producer.send(producerRecord,
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0(recordMetadata, e) -> {
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>(e !=\u00a0null<\/span>) {
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0else<\/span>\u00a0{
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.out.println(\"key\/value \"<\/span>\u00a0+ key +\u00a0\"\/\"<\/span>\u00a0+ value +\u00a0\"twritten to topic[partition] \"<\/span>\u00a0+ recordMetadata.topic() +\u00a0\"[\"<\/span>\u00a0+ recordMetadata.partition() +\u00a0\"] at offset \"<\/span>\u00a0+ recordMetadata.offset());
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0);
                          \u00a0\u00a0\u00a0\u00a0}

                          \u00a0\u00a0\u00a0\u00a0public<\/span>\u00a0void<\/span>\u00a0shutdown() {
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0producer.close();
                          \u00a0\u00a0\u00a0\u00a0}

                          \u00a0\u00a0\u00a0\u00a0public<\/span>\u00a0static<\/span>\u00a0void<\/span>\u00a0main(String<\/span>[] args) {

                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0final Properties props =\u00a0new<\/span>\u00a0Properties();

                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0props.put(ProducerConfig.ENABLE_IDEMPOTENCE_CONFIG,\u00a0\"true\"<\/span>);
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0props.put(ProducerConfig.ACKS_CONFIG,\u00a0\"all\"<\/span>);

                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0props.put(ProducerConfig.CLIENT_ID_CONFIG,\u00a0\"myApp\"<\/span>);
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);

                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0final\u00a0String<\/span>\u00a0topic =\u00a0\"myTopic\"<\/span>;
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0final Producer<String<\/span>,\u00a0String<\/span>> producer =\u00a0new<\/span>\u00a0KafkaProducer<>(props);
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0final KafkaProducerApplication producerApp =\u00a0new<\/span>\u00a0KafkaProducerApplication(producer, topic);

                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0String<\/span>\u00a0filePath =\u00a0\"\/home\/donald\/Documents\/Code\/Source\/kafka-2.7.1-src\/examples\/src\/main\/java\/kafka\/examples\/input.txt\"<\/span>;
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try<\/span>\u00a0{
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0List<String<\/span>> linesToProduce = Files.readAllLines(Paths.get(filePath));
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0linesToProduce.stream().filter(l -> !l.trim().isEmpty())
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0.forEach(producerApp::produce);
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.out.println(\"Offsets and timestamps committed in batch from \"<\/span>\u00a0+ filePath);
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch<\/span>\u00a0(IOException e) {
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.err.printf(\"Error reading file %s due to %s %n\"<\/span>, filePath, e);
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0finally<\/span>\u00a0{
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0producerApp.shutdown();
                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}
                          \u00a0\u00a0\u00a0\u00a0}
                          }<\/code><\/pre>\n<\/section>\n
                          \u542f\u52a8\u751f\u4ea7\u8005\u540e\uff0c\u63a7\u5236\u53f0\u8f93\u51fa\u5982\u4e0b\uff1a<\/strong><\/span><\/p>\n
                          \u542f\u52a8\u6d88\u8d39\u8005\uff1a<\/strong><\/span><\/p>\n
                          \n
                          $ .\/kafka-console-consumer.sh<\/span>\u00a0--bootstrap-server localhost:9092<\/span>\u00a0--topic myTopic<\/code><\/pre>\n<\/section>\n
                          \n
                          \n
                          \u4fee\u6539\u914d\u7f6e acks<\/span><\/strong><\/span><\/h4>\n<\/section>\n<\/section>\n
                          \u542f\u7528\u5e42\u7b49\u7684\u60c5\u51b5\u4e0b\uff0c\u8c03\u6574\u00a0<\/strong>acks<\/code>\u00a0\u914d\u7f6e\uff0c\u751f\u4ea7\u8005\u542f\u52a8\u540e\u7ed3\u679c\u662f\u600e\u6837\u7684\uff1a<\/strong><\/span><\/p>\n
                            \n
                          • \n
                            \u4fee\u6539\u914d\u7f6e\u00a0<\/span>acks = 1<\/span><\/code><\/p>\n<\/li>\n
                          • \n
                            \u4fee\u6539\u914d\u7f6e\u00a0<\/span>acks = 0<\/span><\/code><\/section>\n<\/li>\n<\/ul>\n
                            \u4f1a\u76f4\u63a5\u62a5\u9519\uff1a<\/span><\/p>\n
                            \n
                            Exception in thread \"main\" org.apache.kafka.common.config.ConfigException: Must\u00a0set<\/span>\u00a0acks\u00a0to<\/span>\u00a0all\u00a0in<\/span>\u00a0order<\/span>\u00a0to<\/span>\u00a0use<\/span>\u00a0the idempotent producer.
                            Otherwise we cannot\u00a0guarantee<\/span>\u00a0idempotence.<\/code><\/pre>\n<\/section>\n
                            \n
                            \n
                            \u4fee\u6539\u914d\u7f6e max.in.flight.requests.per.connection<\/span><\/strong><\/span><\/h4>\n<\/section>\n<\/section>\n
                            \u542f\u7528\u5e42\u7b49\u7684\u60c5\u51b5\u4e0b\uff0c\u8c03\u6574\u6b64\u914d\u7f6e\uff0c\u7ed3\u679c\u662f\u600e\u6837\u7684\uff1a<\/strong><\/span><\/p>\n
                            \u5c06 \u00a0<\/span>max.in.flight.requests.per.connection > 5<\/span><\/code>\u00a0\u4f1a\u600e\u6837\uff1f<\/span><\/p>\n
                            \u5f53\u7136\u4f1a\u62a5\u9519\uff1a<\/strong><\/span><\/p>\n
                            \n
                            Caused<\/span>\u00a0by<\/span>:\u00a0org<\/span>.apache<\/span>.kafka<\/span>.common<\/span>.config<\/span>.ConfigException<\/span>:\u00a0Must<\/span>\u00a0set<\/span>\u00a0max<\/span>.in<\/span>.flight<\/span>.requests<\/span>.per<\/span>.connection<\/span>\u00a0to<\/span>\u00a0at<\/span>\u00a0most<\/span>\u00a05\u00a0to<\/span>\u00a0use<\/span>\u00a0the<\/span>\u00a0idempotent<\/span>\u00a0producer<\/span>.<\/code><\/pre>\n<\/section>\n
                            <\/section>\n
                            \u00b7END\u00b7<\/strong><\/p>\n
                            \n
                            \u672c\u7bc7\u6587\u7ae0\u6765\u6e90\u4e8e\u5fae\u4fe1\u516c\u4f17\u53f7: IT\u725b\u5ba2<\/p><\/blockquote>\n<\/div>\n","raw":"","protected":false},"excerpt":{"rendered":"
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