问题一：Flink CDC里看了下mysql的日志，这种效果要怎么实现？ Flink CDC里看了下mysql的日志，发现flink在查询数据的时候，使用的语句是 select from table。我在创建sql任务的时候，source端是列出了要的字段，flink还会用select 去查找库里面查找。因为cdc读取源端数据分两个阶段，第一阶段是做可并行的全量快照（select *)，...

问答 2024-02-14 来自：开发者社区

Flink CDC里oracel cdc 的延时很大什么原因？

Flink CDC里oracel cdc 的延时很大什么原因？目前只有几条测试数据好几分钟数据才过来，在上游插入一条数据，看日志，10分钟才过来。

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更新时间 2024-03-15 12:25:11

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实时计算Flink版

阿里云实时计算Flink版(Alibaba Cloud Realtime Compute)，完全兼容开源的Apache Flink，比开源性能提升2～3倍，提供了完整的告警、监控、日志的解决方案、提升开发效率且无运维成本，并有社区专家提供技术支持。

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实时同步

MySQL 到 Hologres

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功能对比

开源Flink对比

成本优化

作业自动调优