Database optimization critical
Database Query Optimization
Query optimization patterns including N+1 prevention, indexing strategies, EXPLAIN analysis, connection pooling, and performance monitoring.
- Difficulty
- intermediate
- Read time
- 1 min read
- Version
- v1.0.0
- Confidence
- established
- Last updated
Quick Reference
Query optimization: Prevent N+1 with eager loading or batch queries. Use EXPLAIN ANALYZE to find slow queries. Index filtered/joined columns but don't over-index. Use covering indexes for index-only scans. Prefer keyset pagination over OFFSET. Use connection pooling.
Use When
- Optimizing slow database queries
- Diagnosing N+1 query problems
- Designing database indexes
- Scaling database performance
Skip When
- NoSQL databases with different optimization patterns
- Simple CRUD applications with minimal load
- Read-only data that fits in memory
Database Query Optimization
Query optimization patterns including N+1 prevention, indexing strategies, EXPLAIN analysis, connection pooling, and performance monitoring.