PostgreSQL indexes: simple rules that speed up your app

December 31, 20256 min readURL: /en/blog/postgres-indeksy-podstawy
Autor: 7kar7son7Developer

When indexes help, when they hurt, and how to think about queries.

postgresqlperformancebackend

TL;DR

  • postgres indexes basics
  • For apps with growing DB and slow lists/filters.

Who this is for

  • For apps with growing DB and slow lists/filters.

Keyword (SEO)

  • postgres indexes basics

When to add an index

  • Columns in WHERE/JOIN
  • Sorting/pagination
  • Query patterns

What not to index

  • Too many indexes slow writes
  • Low selectivity indexes
  • No query plan review

How to verify

  • EXPLAIN ANALYZE
  • p95 monitoring
  • Staging test with real data

Want this implemented for your business?

About the author

Developer at DevStudio.it. Focused on performance, SEO and production-ready web apps.

Recommended links

If you want to go from knowledge to implementation — here are shortcuts to our products, hosting and portfolio.

Want this implemented for your business?

Let’s do it fast: scope + estimate + timeline.

Get Quote