Database Systems
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banditz
How to Find and Fix Slow Queries in PostgreSQL — Read EXPLAIN ANALYZE Before You Add Random Indexes
Your API endpoint takes 4 seconds to respond. Your dashboard loads like it's 2003. Someone suggests "just add an index" without even looking at the query plan. Stop. The problem might not be a missing index at all — it could be stale statistics, a bad join order, an ORM generating garbage SQL.
