Tag: wp_postmeta

How to Add Custom Database Indexes to wp_postmeta in WordPress

Learn how to add custom database indexes to wp_postmeta in WordPress. This step-by-step guide covers diagnosing slow queries with EXPLAIN, adding meta_value indexes, automating with an mu-plugin, and benchmarking query performance improvements of 80% or more.

Varun Dubey · February 23, 2026 · 8 min read