Recommended Number of TiCDC Synchronization Tasks

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: ticdc 同步任务个数建议

| username: HACK

【TiDB Usage Environment】Production Environment or Test Environment or POC
【TiDB Version】
【Encountered Issues】

  1. Is there a limit on the number of changefeeds configured in ticdc? For example, is there a recommended maximum number?
  2. Is there a recommended maximum number of tables to be synchronized in each changefeed?

【Reproduction Path】What operations were performed that led to the issue
【Issue Phenomenon and Impact】

【Attachments】

Please provide the version information of each component, such as cdc/tikv, which can be obtained by executing cdc version/tikv-server --version.

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| username: hey-hoho | Original post link

I didn’t see any clear restrictions on these two points. I’ve seen TiCDC clusters with hundreds of changefeeds, and by default, changefeeds sync all tables, right?

Based on experience, you might consider the following suggestions:

  • Create separate changefeeds for large tables.
  • Control the number of tables in a single changefeed.
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| username: system | Original post link

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