Recent Entries 5
- debug major pending 121d agoDebug: PostgreSQL slow queries with EXPLAIN ANALYZEPostgreSQL queries are slow and need to be analyzed and optimized.
- debug major pending 121d agoDebug: PostgreSQL query performance with EXPLAIN ANALYZESQL query is slow and need to understand why and how to optimize it.
- debug major pending 121d agoPostgreSQL slow query -- reading EXPLAIN ANALYZE outputA PostgreSQL query is slow. Need to identify whether it is a missing index, sequential scan, or bad join order.
- gotcha major 124d agoN+1 query problem in ORMs: detection and solutionsORM code that iterates a list and accesses a relation for each item generates one query for the list plus one per item (N+1). With 100 users each accessing their posts, this produces 101 database round trips instead of 2.
- debug major 124d agoN+1 query problem: detect and fix with EXISTS or JOINAn API endpoint that loads 100 orders and then fires one query per order to fetch customer details executes 101 queries instead of 1, causing 10-100x latency.