Two Rails jobs can save successfully and still lose an update. Trace Solid Queue’s concurrency keys and expiry, then compare atomic increments with optimistic locking using a small database reproduction.

https://railsrevelry.substack.com/p/when-two-background-jobs-target-the-same-record?utm_source=rubyflow&utm_medium=referral&utm_campaign=article_28_shared_record