Coco Moon | Distributed Systems & AI Infrastructure http://www.cocomoon-tech.com//blog Providing specialized software development and technical consulting services, focusing on high-performance distributed systems, real-time data infrastructure, and AI-driven data processing solutions for global clients. en-us admin@cocomoon-tech.com (Charles Chen) admin@cocomoon-tech.com (Charles Chen) Thu, 23 Jul 2026 00:00:00 GMT http://www.cocomoon-tech.com//blog/flinksql-dead-letter-queue Flink SQL 死信队列（DLQ）：Raw Source + 双路分流方案 http://www.cocomoon-tech.com//blog/flinksql-dead-letter-queue Flink SQL 没有内置通用的 DLQ 语法，采用 Raw Source 读取原始消息、SQL 层容错解析、双路分流到业务 Sink 和 DLQ Topic 的方案。 Thu, 23 Jul 2026 00:00:00 GMT admin@cocomoon-tech.com (Charles Chen) flinksqlkafkadlqdead-letter-queueraw-format