Tag: Performance Optimization

All the articles with the tag "Performance Optimization".

• Why Is My SQL Query Slow? A Backend Debugging Guide

  5 Sep, 2026

  By Pratik Bhuite | 20 min read

  Series: Backend Interview Mastery

  Learn why SQL queries are slow and use EXPLAIN ANALYZE, query plans, indexes, and production evidence to fix them safely.

  • Backend
  • Databases
  • SQL

• Composite Index Column Order: How to Choose the Right SQL Index

  31 Aug, 2026

  By Pratik Bhuite | 24 min read

  Series: Backend Interview Mastery

  Learn how to choose composite index column order for SQL queries using equality, range, sort, selectivity, and EXPLAIN plan trade-offs.

  • Backend
  • Databases
  • SQL