Database Optimization: Query Performance and Indexing

Database performance directly impacts application responsiveness. Learn optimization techniques for faster queries and better scalability.

Query Optimization

Use EXPLAIN to analyze queries, avoid N+1 problems, and select appropriate indexes. Small optimizations compound into significant improvements.

Indexing Strategies

• Single-column indexes for simple searches
• Composite indexes for multi-column queries
• Partial indexes for conditional queries

Caching Patterns

Implement caching at application level using Redis or Memcached. Cache query results and invalidate strategically.