Reliability of changefeed

If the configure sink is not reachable, will the CDC events (changefeed) lost?

Hi @katu979,

They are not lost, but you could restart the changefeed with a cursor with the time in which the previous changefeed failed.

They can go back as far back as the TTL on the table.

I hope this helps.


When the leader for a range becomes unreachable, will the Changefeed be served from the new leader? Will this happen without interruption? Will older changes (up to TTL) be available on the new leader? TIA.

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Hi Atul,

As long as the raft group can maintain quorum then it will be served from the new leader. There should not be any interruption. The new leader would have previously been a follower and is updated with all changes, so they should maintain.

Please read our known limitations.