我们可以通过CDC（ChangeDataCapture）工具进行解除耦合，同步到下游需要同步的存储系统。通过这种方式提高系统的稳健性，也方便后续的维护。FlinkSQLCDC数据同步与原理解析CDC全称是ChangeDataCapture，它是一个比较广义的概念，只要能捕获变更的数据，我们都可以称为CDC。业界主要有基于查询的CDC和基于日志的CDC，可以从下面表格对比他们功能和差异点。经过以上对比，我们可以发现基于日志CDC有以下这几种优势：能够捕获所有数据的变化，捕获完整的变更记录。
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