Race condition - #232
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Pull request overview
This PR aims to prevent a race where multiple judges can be auto-assigned to the same project concurrently by making auto-assignment selection + creation atomic.
Changes:
- Wraps auto-assignment logic in a Prisma interactive transaction and adds a Postgres advisory lock.
- Adjusts project eligibility and selection logic to avoid projects that are currently QUEUED and to balance by completed assignment counts.
- Adds a concurrency warning log when a project is unexpectedly already QUEUED.
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limit to judge per project at a time
fix race condition of 2 judges getting assigned to a project at the same time