A deploy can replay unfinished Solid Queue jobs without retry_on, even after a webhook succeeds. Trace fork-mode shutdown, the effect that survives, and receiver-side duplicate protection, with source links and a separate process-death reproduction.

https://railsrevelry.substack.com/p/why-a-background-job-can-run-more-than-once?utm_source=rubyflow&utm_medium=referral&utm_campaign=article_27_job_replay