Regarding ticdc parameter gc-ttl and gc issues in the tidb cluster

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

Original topic: 关于ticdc 参数gc-ttl 与tidb集群的gc 问题

| username: jeff

[TiDB Usage Environment] Production Environment
[TiDB Version] 4.0.13

[Encountered Problem: Problem Phenomenon and Impact]
Can anyone explain the relationship between ticdc’s gc-ttl and the cluster’s gc time?
My goal is to ensure that even if cdc is interrupted for a long time, it can still catch up. Should I just set gc-ttl for this? Do I also need to set the cluster’s gc time to a long duration?

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| username: 像风一样的男子 | Original post link

Practice is the only criterion for testing truth. Testing in a complete test environment will help you understand faster.

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| username: tidb菜鸟一只 | Original post link

After setting gc-ttl, GC will not proceed normally and will need to exceed the gc-ttl time.
Yes
No need

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| username: Fly-bird | Original post link

Boss, as a newbie, I’ve already replied and liked it.

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| username: h5n1 | Original post link

Make good use of search.

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| username: system | Original post link

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