{"id":105689,"date":"2026-09-15T21:40:27","date_gmt":"2026-09-15T13:40:27","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/105689.html"},"modified":"2026-09-15T21:40:27","modified_gmt":"2026-09-15T13:40:27","slug":"kafka-%e4%ba%8b%e5%8a%a1%e6%b6%88%e6%81%af%e5%9c%a8%e5%88%86%e5%b8%83%e5%bc%8f%e8%ae%a2%e5%8d%95%e7%bb%93%e7%ae%97%e4%b8%ad%e7%9a%84%e5%85%a8%e9%93%be%e8%b7%af%e8%90%bd%e5%9c%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/105689.html","title":{"rendered":"Kafka \u4e8b\u52a1\u6d88\u606f\u5728\u5206\u5e03\u5f0f\u8ba2\u5355\u7ed3\u7b97\u4e2d\u7684\u5168\u94fe\u8def\u843d\u5730"},"content":{"rendered":"

Kafka \u4e8b\u52a1\u6d88\u606f\u5728\u5206\u5e03\u5f0f\u8ba2\u5355\u7ed3\u7b97\u4e2d\u7684\u5168\u94fe\u8def\u843d\u5730<\/h2>\n

\"\u5c01\u9762\u4fe1\u606f\u56fe\"<\/p>\n

\u5728\u7535\u5546\u5927\u4fc3\u7684\u6e05\u7ed3\u7b97\u4e0e\u8d22\u52a1\u5bf9\u8d26\u4f53\u7cfb\u4e2d，\u8ba2\u5355\u7ed3\u7b97（Order Settlement）\u662f\u6700\u8003\u9a8c\u7cfb\u7edf\u67b6\u6784\u201c\u6570\u636e\u6b63\u786e\u6027\u4e0e\u9ad8\u541e\u5410\u5e76\u53d1\u201d\u7684\u6838\u5fc3\u9635\u5730\u3002<\/p>\n

\u4e00\u4e2a\u5927\u4fc3\u8ba2\u5355\u7684\u6210\u529f\u7ed3\u7b97，\u6d89\u53ca\u6a2a\u8de8\u591a\u4e2a\u72ec\u7acb\u7cfb\u7edf\u4e0e\u8d26\u6237\u7684\u539f\u5b50\u64cd\u4f5c：<\/p>\n

  • \u8ba2\u5355\u5c65\u7ea6\u72b6\u6001\u63a8\u8fdb：\u5c06\u8ba2\u5355\u7ed3\u7b97\u72b6\u6001\u7f6e\u4e3a SETTLED；<\/li>\n
  • \u591a\u65b9\u8d26\u6237\u6e05\u5206\u8bb0\u8d26：\u5411\u5546\u5bb6\u8d26\u6237\u8bb0\u5165\u8d27\u6b3e（\u6263\u9664\u5e73\u53f0\u4f63\u91d1），\u5411\u5e73\u53f0\u8d44\u91d1\u6c60\u5212\u8f6c\u6280\u672f\u670d\u52a1\u8d39，\u5411\u7269\u6d41\u670d\u52a1\u5546\u6d3e\u53d1\u8fd0\u8d39\u57ab\u8d44；<\/li>\n
  • \u8425\u9500\u8d44\u4ea7\u6e05\u7b97：\u6838\u9500\u5e73\u53f0\u8de8\u5e97\u6ee1\u51cf\u8865\u8d34，\u5411\u7528\u6237\u4f1a\u5458\u8d26\u6237\u8fd4\u8fd8\u672c\u6b21\u4ea4\u6613\u7d2f\u79ef\u7684\u79ef\u5206；<\/li>\n
  • \u751f\u6210\u4e0d\u53ef\u7be1\u6539\u7684\u8d22\u52a1\u5ba1\u8ba1\u6d41\u6c34：\u5411\u4e0b\u6e38\u8d22\u52a1\u603b\u8d26\u7cfb\u7edf\u4e0e\u7a0e\u52a1\u5f00\u7968\u7cfb\u7edf\u53d1\u5e03\u5408\u89c4\u5ba1\u8ba1\u4e8b\u4ef6\u3002<\/li>\n

    \u5728\u4f20\u7edf\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\u8bbe\u8ba1\u4e2d，\u5f88\u591a\u56e2\u961f\u5c1d\u8bd5\u91c7\u7528\u57fa\u4e8e XA \u534f\u8bae\u7684\u5f3a\u4e00\u81f4\u5206\u5e03\u5f0f\u4e8b\u52a1\u6846\u67b6（\u5982 Seata AT \u6a21\u5f0f\u6216\u4f20\u7edf 2PC）\u3002\u7136\u800c，\u5728\u5927\u4fc3 80,000 TPS \u7684\u6781\u9650\u5cf0\u503c\u4e0b，\u5168\u5c40\u4e8b\u52a1\u9501（Global Lock）\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u88ab\u6b7b\u6b7b\u9501\u4f4f\u957f\u8fbe\u6570\u79d2，\u5355\u673a\u541e\u5410\u91cf\u76f4\u63a5\u53d1\u751f\u65ad\u5d16\u5f0f\u5d29\u584c（\u4ece 10,000 TPS \u66b4\u8dcc\u81f3\u4e0d\u8db3 300 TPS），\u7cfb\u7edf\u53d1\u751f\u5168\u5c40\u5206\u5e03\u5f0f\u6b7b\u9501\u3002<\/p>\n

    \u501f\u52a9 Apache Kafka \u4e8b\u52a1\u6d88\u606f\u673a\u5236（Transactional Messaging）\u7ed3\u5408\u672c\u5730\u72b6\u6001\u673a\u4e0e\u4e8b\u4ef6\u9a71\u52a8（EDA），\u6784\u5efa\u7aef\u5230\u7aef\u201c\u7cbe\u786e\u4e00\u6b21（Exactly-Once Semantics, EOS）\u201d\u7684\u5206\u5e03\u5f0f\u8ba2\u5355\u7ed3\u7b97\u6d41\u6c34\u7ebf，\u662f\u5b9e\u73b0\u8d85\u9ad8\u6027\u80fd\u4e0e\u91d1\u878d\u7ea7\u5f3a\u4e00\u81f4\u6027\u7684\u7ec8\u6781\u5229\u5668\u3002<\/p>\n

    \u5206\u5e03\u5f0f\u7ed3\u7b97\u5168\u94fe\u8def\u7684\u7aef\u5230\u7aef EOS \u67b6\u6784\u8bbe\u8ba1<\/h4>\n

    \u5728\u57fa\u4e8e Kafka \u4e8b\u52a1\u6d88\u606f\u7684\u7ed3\u7b97\u67b6\u6784\u4e2d，\u6574\u4e2a\u5904\u7406\u6d41\u6c34\u7ebf\u9075\u5faa\u4e25\u683c\u7684 Read-Process-Write（\u8bfb\u53d6-\u5904\u7406-\u539f\u5b50\u5199\u5165） \u95ed\u73af\u6a21\u578b：<\/p>\n

    [\u4e0a\u6e38\u8ba2\u5355\u5df2\u652f\u4ed8\u4e8b\u4ef6 (Topic: trade-order-paid-topic)]
    \n |
    \n v (Kafka \u6d88\u8d39\u7aef\u62c9\u53d6\u7ed3\u7b97\u4efb\u52a1)
    \n+——————————————————————————-+
    \n| \u6838\u5fc3\u8ba2\u5355\u7ed3\u7b97\u5904\u7406\u5fae\u670d\u52a1 (Order Settlement Processing Worker) |
    \n| 1. \u5f00\u542f Kafka \u4e8b\u52a1: producer.beginTransaction() |
    \n| 2. \u5728\u672c\u5730\u5355\u673a\u6570\u636e\u5e93\u4e8b\u52a1\u4e2d\u6267\u884c: |
    \n| – \u6821\u9a8c\u7ed3\u7b97\u5355\u5e42\u7b49\u6027 |
    \n| – \u8ba1\u7b97\u5546\u5bb6\u5b9e\u6536\u8d27\u6b3e\u3001\u4f63\u91d1\u6bd4\u4f8b\u4e0e\u8fd4\u8fd8\u79ef\u5206 |
    \n| – \u66f4\u65b0\u672c\u5730\u7ed3\u7b97\u72b6\u6001\u673a\u4e3a SETTLING |
    \n| 3. \u5411\u4e0b\u6e38\u591a\u4e2a Topic \u53d1\u9001\u539f\u5b50\u7ed3\u7b97\u5b50\u4e8b\u4ef6: |
    \n| – \u53d1\u9001\u81f3\u3010\u5546\u5bb6\u8d44\u91d1\u6e05\u5206\u961f\u5217\u3011 (merchant-payout-topic) |
    \n| – \u53d1\u9001\u81f3\u3010\u4f1a\u5458\u79ef\u5206\u8fd4\u8fd8\u961f\u5217\u3011 (user-points-reward-topic) |
    \n| – \u53d1\u9001\u81f3\u3010\u8d22\u52a1\u5ba1\u8ba1\u603b\u8d26\u961f\u5217\u3011 (finance-audit-ledger-topic) |
    \n| 4. \u5c06\u4e0a\u6e38\u8f93\u5165 Topic \u7684\u3010\u6d88\u8d39\u4f4d\u79fb Offset\u3011\u539f\u5b50\u7ed1\u5b9a\u5e76\u6ce8\u5165\u5f53\u524d Kafka \u4e8b\u52a1\u4e2d! |
    \n| 5. \u539f\u5b50\u63d0\u4ea4 Kafka \u4e8b\u52a1: producer.commitTransaction() |
    \n+——————————————————————————-+
    \n |
    \n v (\u4e0b\u6e38\u53ea\u8bfb\u5df2\u63d0\u4ea4\u4e8b\u4ef6: isolation.level = read_committed)
    \n+———————–+———————–+———————–+
    \n| \u5546\u5bb6\u8d44\u91d1\u8d26\u6237\u5fae\u670d\u52a1 | \u4f1a\u5458\u79ef\u5206\u5fae\u670d\u52a1 | \u8d22\u52a1\u5408\u89c4\u603b\u8d26\u5fae\u670d\u52a1 |
    \n| (\u539f\u5b50\u5165\u8d26\u4e0e\u6253\u6b3e) | (\u539f\u5b50\u589e\u52a0\u7528\u6237\u79ef\u5206) | (\u751f\u6210\u6c38\u4e45\u4e0d\u53ef\u7be1\u6539\u51ed\u8bc1) |
    \n+———————–+———————–+———————–+<\/p>\n

    \u4e3a\u4ec0\u4e48\u8fd9\u5957\u67b6\u6784\u80fd\u505a\u5230\u201c100% \u7edd\u4e0d\u4e22\u5355\u3001\u7edd\u4e0d\u91cd\u7b97\u3001\u7edd\u4e0d\u6b7b\u9501\u201d？<\/h4>\n
  • \u5f7b\u5e95\u6253\u7834\u8de8\u5e93\u7269\u7406\u5206\u5e03\u5f0f\u9501：\u5404\u4e2a\u5fae\u670d\u52a1（\u8ba2\u5355\u3001\u8d44\u91d1\u3001\u79ef\u5206\u3001\u8d22\u52a1）\u5b8c\u5168\u62e5\u6709\u72ec\u7acb\u7684\u6570\u636e\u5e93，\u5404\u81ea\u53ea\u6267\u884c\u6700\u7eaf\u7cb9\u7684\u5355\u673a\u672c\u5730\u4e8b\u52a1，\u5355\u673a MySQL \u5199\u5165\u8017\u65f6\u4ec5\u9700 3ms，\u5355\u673a TPS \u8f7b\u677e\u98d9\u5347\u81f3 15,000 \u4ee5\u4e0a，\u5f7b\u5e95\u6d88\u9664\u4e86\u8de8\u5e93\u5206\u5e03\u5f0f\u6b7b\u9501；<\/li>\n
  • Offset \u63d0\u4ea4\u4e0e\u4e0b\u6e38\u6d88\u606f\u53d1\u5e03\u7684\u5f3a\u539f\u5b50\u7ed1\u5b9a：\u901a\u8fc7 producer.sendOffsetsToTransaction()，\u4e0a\u6e38\u6d88\u606f\u7684 Offset \u63d0\u4ea4\u52a8\u4f5c\u4e0e\u4e0b\u6e38 3 \u4e2a Topic \u7684\u6d88\u606f\u53d1\u9001，\u88ab Kafka \u4e8b\u52a1\u534f\u8c03\u5668（Transaction Coordinator）\u6253\u5305\u5728\u540c\u4e00\u4e2a\u4e24\u9636\u6bb5\u63d0\u4ea4（2PC）\u4e2d：\n
      \n
    • \u82e5\u4e2d\u95f4\u4efb\u4f55\u4e00\u6b65\u53d1\u751f\u5b95\u673a\u6216\u5f02\u5e38：\u6574\u4e2a\u4e8b\u52a1\u6574\u4f53\u56de\u6eda，\u4e0b\u6e38 3 \u4e2a Topic \u4e0d\u4f1a\u91ca\u653e\u4efb\u4f55\u4e00\u6761\u6d88\u606f，\u8f93\u5165 Topic \u7684 Offset \u4e5f\u6ca1\u6709\u63d0\u4ea4；<\/li>\n
    • \u65b0 Pod \u91cd\u542f\u63a5\u7ba1\u540e，\u91cd\u65b0\u62c9\u53d6\u8be5\u6d88\u606f\u5e76\u91cd\u8bd5，\u5728\u6570\u5b66\u4e0a\u4fdd\u8bc1\u4e86\u4e00\u6761\u6570\u636e\u90fd\u4e0d\u4f1a\u4e22\u5931\u3001\u4e5f\u7edd\u4e0d\u4f1a\u5411\u8d22\u52a1\u7cfb\u7edf\u6f0f\u53d1\u4efb\u4f55\u810f\u6570\u636e！<\/li>\n<\/ul>\n<\/li>\n

      \u751f\u4ea7\u7ea7\u5fae\u6279\u4e8b\u52a1\u7ed3\u7b97\u6838\u5fc3\u5b9e\u73b0\u4ee3\u7801<\/h4>\n

      \/\/ \u751f\u4ea7\u7ea7 Kafka \u7aef\u5230\u7aef\u7ed3\u7b97\u5fae\u6279\u4e8b\u52a1\u5904\u7406\u5f15\u64ce
      \n@Component
      \npublic class ResilientOrderSettlementWorker {
      \n @Autowired
      \n private KafkaConsumer<String, OrderPaidEventDTO> consumer;
      \n @Autowired
      \n private KafkaProducer<String, Object> transactionalProducer;
      \n @Autowired
      \n private LocalSettlementService localSettlementService;<\/p>\n

      @PostConstruct
      \n public void init() {
      \n \/\/ \u542f\u52a8\u65f6\u4ec5\u6267\u884c\u4e00\u6b21\u5168\u5c40\u4e8b\u52a1\u534f\u8c03\u5668\u6ce8\u518c
      \n transactionalProducer.initTransactions();
      \n }<\/p>\n

      public void runSettlementLoop() {
      \n try {
      \n while (true) {
      \n \/\/ 1. \u6279\u91cf\u62c9\u53d6 100 \u6761\u5f85\u7ed3\u7b97\u8ba2\u5355 (\u5fae\u6279\u805a\u5408，\u69a8\u5e72\u7f51\u7edc\u541e\u5410!)
      \n ConsumerRecords<String, OrderPaidEventDTO> records = consumer.poll(Duration.ofMillis(100));
      \n if (records.isEmpty()) continue;<\/p>\n

      \/\/ 2. \u5f00\u542f\u5355\u4e2a Kafka \u6279\u6b21\u4e8b\u52a1
      \n transactionalProducer.beginTransaction();<\/p>\n

      try {
      \n Map<TopicPartition, OffsetAndMetadata> offsetsToCommit = new HashMap<>();<\/p>\n

      for (ConsumerRecord<String, OrderPaidEventDTO> record : records) {
      \n OrderPaidEventDTO order = record.value();<\/p>\n

      \/\/ 3. \u6267\u884c\u672c\u5730\u5355\u673a\u7ed3\u7b97\u7b97\u4ef7\u4e0e\u72b6\u6001\u63a8\u8fdb
      \n SettlementCalculationResult result = localSettlementService.calculateAndRecord(order);<\/p>\n

      \/\/ 4. \u539f\u5b50\u53d1\u9001\u4e0b\u6e38\u5546\u5bb6\u8d27\u6b3e\u3001\u79ef\u5206\u4e0e\u8d22\u52a1\u65e5\u5fd7\u4e8b\u4ef6
      \n transactionalProducer.send(new ProducerRecord<>("merchant-payout-topic",
      \n order.getMerchantId(), JsonUtils.toJson(result.getMerchantPayoutEvent())));
      \n transactionalProducer.send(new ProducerRecord<>("user-points-reward-topic",
      \n order.getUserId(), JsonUtils.toJson(result.getPointsRewardEvent())));
      \n transactionalProducer.send(new ProducerRecord<>("finance-audit-ledger-topic",
      \n order.getOrderId(), JsonUtils.toJson(result.getAuditLedgerEvent())));<\/p>\n

      \/\/ \u8bb0\u5f55\u4f4d\u79fb
      \n offsetsToCommit.put(
      \n new TopicPartition(record.topic(), record.partition()),
      \n new OffsetAndMetadata(record.offset() + 1)
      \n );
      \n }<\/p>\n

      \/\/ 5. \u5c06\u6279\u91cf Offset \u63d0\u4ea4\u6302\u8f7d\u81f3\u4e8b\u52a1\u4e2d
      \n transactionalProducer.sendOffsetsToTransaction(offsetsToCommit, consumer.groupMetadata());<\/p>\n

      \/\/ 6. \u539f\u5b50\u4e24\u9636\u6bb5\u63d0\u4ea4！\u4e0b\u6e38\u4e09\u4e2a\u7cfb\u7edf\u540c\u65f6\u53ef\u89c1！
      \n transactionalProducer.commitTransaction();<\/p>\n

      } catch (Exception ex) {
      \n log.error("Settlement batch transaction failed, aborting entire transaction…", ex);
      \n \/\/ \u53d1\u751f\u5f02\u5e38：\u5f7b\u5e95\u539f\u5b50\u4e2d\u6b62！\u4e00\u6761\u810f\u6570\u636e\u90fd\u4e0d\u4f1a\u8fdb\u5165\u4e0b\u6e38！
      \n transactionalProducer.abortTransaction();
      \n \/\/ \u91cd\u7f6e\u672c\u5730\u6e38\u6807\u4ee5\u4fbf\u4e0b\u4e00\u8f6e\u91cd\u8bd5
      \n rollbackConsumerOffsets(records);
      \n }
      \n }
      \n } finally {
      \n consumer.close();
      \n transactionalProducer.close();
      \n }
      \n }
      \n}<\/p>\n

      \u751f\u4ea7\u7ea7\u9632\u8e29\u5751\u519b\u89c4<\/h4>\n

      \u5728\u5927\u4fc3\u957f\u5468\u671f\u8fd0\u884c\u4e2d，\u9488\u5bf9\u4e8b\u52a1\u6d88\u606f\u5fc5\u987b\u8bbe\u7f6e\u4e25\u683c\u7684\u9632\u62a4\u7ea2\u7ebf：<\/p>\n

    • \u4e25\u683c\u9650\u5236\u5355\u4e8b\u52a1\u6279\u6b21\u5927\u5c0f（Batch Size）：\u5355\u4e8b\u52a1\u5904\u7406\u7684\u6570\u636e\u91cf\u5efa\u8bae\u4e25\u683c\u63a7\u5236\u5728 100～200 \u6761\u4e4b\u95f4\u3002\u6279\u6b21\u8fc7\u5927（\u8d85\u8fc7 1,000 \u6761）\u4f1a\u5bfc\u81f4\u5355\u4e8b\u52a1\u6267\u884c\u8017\u65f6\u8fc7\u957f，\u589e\u52a0\u7f51\u7edc\u8d85\u65f6\u56de\u6eda\u6982\u7387；\u6279\u6b21\u8fc7\u5c0f（\u5355\u6761\u4e8b\u52a1）\u4f1a\u5bfc\u81f4\u8de8\u7f51\u7edc RTT \u5f00\u9500\u589e\u5927；<\/li>\n
    • \u4e0b\u6e38\u6d88\u8d39\u7aef\u5f3a\u5236\u5f00\u542f isolation.level = read_committed：\u4e0b\u6e38\u6240\u6709\u8d44\u91d1\u548c\u8d22\u52a1\u5fae\u670d\u52a1\u7684\u6d88\u8d39\u7aef，\u5fc5\u987b\u663e\u5f0f\u914d\u7f6e\u8bfb\u5df2\u63d0\u4ea4\u9694\u79bb\u7ea7\u522b，\u9632\u6b62\u8bfb\u5230\u672a\u51b3\u6216\u5df2\u56de\u6eda\u7684\u5e9f\u5f03\u6570\u636e；<\/li>\n
    • \u8bbe\u7f6e\u5408\u7406\u7684\u4e8b\u52a1\u8d85\u65f6\u65f6\u95f4：\u914d\u7f6e transaction.timeout.ms = 20000（20 \u79d2），\u9632\u6b62\u5076\u53d1\u6b7b\u9501\u5bfc\u81f4\u4e8b\u52a1\u6302\u8d77\u5e76\u963b\u585e\u4e0b\u6e38\u6d88\u8d39\u8005\u3002<\/li>\n

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      Kafka \u4e8b\u52a1\u6d88\u606f\u5728\u5206\u5e03\u5f0f\u8ba2\u5355\u7ed3\u7b97\u4e2d\u7684\u5168\u94fe\u8def\u843d\u5730\u5728\u7535\u5546\u5927\u4fc3\u7684\u6e05\u7ed3\u7b97\u4e0e\u8d22\u52a1\u5bf9\u8d26\u4f53\u7cfb\u4e2d，\u8ba2\u5355\u7ed3\u7b97（Order Settlement）\u662f\u6700\u8003\u9a8c\u7cfb\u7edf\u67b6\u6784\u201c\u6570\u636e\u6b63\u786e\u6027\u4e0e\u9ad8\u541e\u5410\u5e76\u53d1\u201d\u7684\u6838\u5fc3\u9635\u5730\u3002
      \n\u4e00\u4e2a\u5927\u4fc3\u8ba2\u5355\u7684\u6210\u529f\u7ed3\u7b97，\u6d89\u53ca\u6a2a\u8de8\u591a\u4e2a\u72ec\u7acb\u7cfb\u7edf\u4e0e\u8d26\u6237\u7684\u539f\u5b50\u64cd\u4f5c：
      \n\u8ba2\u5355\u5c65\u7ea6\u72b6\u6001\u63a8\u8fdb：\u5c06\u8ba2\u5355\u7ed3\u7b97\u72b6\u6001\u7f6e\u4e3a SETTLED；\u591a\u65b9\u8d26\u6237\u6e05\u5206\u8bb0\u8d26：\u5411\u5546\u5bb6\u8d26\u6237\u8bb0\u5165\u8d27\u6b3e（\u6263\u9664\u5e73\u53f0\u4f63\u91d1<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[66,745,99,426,50],"topic":[],"class_list":["post-105689","post","type-post","status-publish","format-standard","hentry","category-server","tag-ai","tag-go","tag-java","tag-jvm","tag-50"],"yoast_head":"\nKafka \u4e8b\u52a1\u6d88\u606f\u5728\u5206\u5e03\u5f0f\u8ba2\u5355\u7ed3\u7b97\u4e2d\u7684\u5168\u94fe\u8def\u843d\u5730 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/105689.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kafka \u4e8b\u52a1\u6d88\u606f\u5728\u5206\u5e03\u5f0f\u8ba2\u5355\u7ed3\u7b97\u4e2d\u7684\u5168\u94fe\u8def\u843d\u5730 - 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