Understanding PostgreSQL Indexes: A Beginner's Guide
Indexes are one of the most powerful tools for improving database performance, yet they're often misunderstood.
In this post, I cover:
- What indexes are and how they work
- B-tree vs. Hash vs. GIN indexes
- When to add an index (and when not to)
- Using EXPLAIN ANALYZE to measure impact
- Real-world examples with a sample e-commerce schema
By the end, you'll be able to make informed decisions about indexing in your own projects.
Demystifying database indexes with practical examples and performance benchmarks.