Written from operating and development evidence. Adapt the principles to the risk, authority and scale of your own system.
Measure the real pages
Test the homepage, important landing pages, mobile templates and conversion routes. Use field data and server timing alongside a laboratory score.
Remove avoidable weight
Optimise images, fonts, unused scripts and heavy builders before layering several cache and optimisation plugins onto the same problem.
Respect dynamic routes
Cart, account, forms, search and personalised content need deliberate cache exclusions. Verify cookies, nonces and payment callbacks after every major change.
Watch the server
Database queries, PHP workers, storage latency and external APIs can dominate response time. Front-end optimisation cannot compensate for an overloaded or misconfigured origin.
Apply this to a real system.
Bring the context and we will identify the useful first decision.
Discuss the related system