Backend Optimization

Backend optimization is about making uncached requests fast: admin screens, logged-in flows, AJAX, search, and checkout. This module focuses on query profiling, persistent object caching, database hygiene, and offloading expensive workloads.

Lesson	Description
Foundation	How PHP, DB queries, and object caching shape dynamic TTFB
Redis Persistent Cache	Enable Redis object caching to reduce database load
Query Profiling Tools	Find slow queries (Query Monitor, slow logs, APM)
Cleanup	Reduce autoload/transient/revision bloat safely
Offload Search	Move expensive search off the primary database
Checklist & Cheat Sheet	Verification steps and common targets
Query Optimization	Practical patterns for reducing slow dynamic requests