mongodb concurrency_error ai_generated true

MongoServerError: WriteConflict

ID: mongodb/write-conflict

Also available as: JSON · Markdown
78%Fix Rate
83%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
7 active — — —

Root Cause

WiredTiger write conflict during concurrent updates.

generic

Workarounds

  1. 90% success Retry transaction with exponential backoff 
    Use retryable writes or session.withTransaction()
  2. 85% success Reduce transaction scope and duration

Dead Ends

Common approaches that don't work:

  1. Add global lock around all writes 88% fail

    Destroys concurrency, massive perf hit

  2. Increase WiredTiger cache to all RAM 82% fail

    OS starvation, OOM killer