Add jittered backoff to dashboard state branch CAS retries - #203
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Adds jittered exponential backoff to the dashboard state branch CAS retry loop to reduce lockstep retries during concurrent webhook-triggered refresh bursts.
Changes:
- Increased CAS retry limit from 3 to 8 attempts.
- Introduced fully-jittered exponential backoff (capped) before refetching state on a rejected push.
- Improved retry logging to include the wait duration.
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Pull request dashboard statusMerged · refreshed 2026-07-31 12:48 UTC Status above doesn't look right?
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maryliag
approved these changes
Jul 31, 2026
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Dashboard state pushes lost the compare-and-swap race on a burst of concurrent webhook-triggered refreshes for the same repository (run 30574634907), because the retry loop allowed only 3 attempts with no delay, so every racer retried in lockstep and the loser kept losing. Raise the attempt limit to 8 and wait an exponentially backed-off, fully jittered delay before each refetch so concurrent writers de-synchronize.