Blogs
- Use The Index, Luke (use-the-index-luke.com) — Markus Winand’s free
companion site to SQL Performance Explained; the best single web
resource on cross-engine indexing behavior.
- PostgreSQL Wiki: Index Maintenance — official, actively maintained
guidance on PostgreSQL-specific index operational concerns.
- MySQL Server Blog (dev.mysql.com/blog) — official engineering posts,
including regular deep dives on optimizer and indexing changes per
MySQL release.
- Percona Database Performance Blog — practical, incident-driven
writeups of real MySQL/PostgreSQL indexing and performance problems.
- Brendan Gregg’s Blog — not indexing-specific, but essential for the
systems-level (I/O, caching) context that makes index performance
reasoning accurate rather than superficial.