mongodb performance_error ai_generated true

Slow query: COLLSCAN detected in explain plan

ID: mongodb/explain-slow-query

Also available as: JSON · Markdown
82%Fix Rate
86%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
7 active — — —

Root Cause

Query performing full collection scan without index.

generic

Workarounds

  1. 92% success Use explain() to identify missing indexes
  2. 90% success Create compound index matching query filter and sort order

Dead Ends

Common approaches that don't work:

  1. Create index on every queried field 75% fail

    Index overhead on writes, storage bloat

  2. Cache all query results 78% fail

    Stale data, memory issues