Performance and Caching
Slow apps lose users and rank worse in search. You do not need to micro-optimize on day one, but grab the cheap wins:
- Imagine keeping copies of your files in warehouses all over the world so each visitor is served from the one nearest them. That is a CDN (Content Delivery Network) — serve static assets through one (most hosts do this automatically).
- expensive responses and queries that do not change often.
- Compress and lazy-load images; ship less JavaScript.
- Run Lighthouse in Chrome DevTools and feed the report to the AI for prioritized fixes.
Ask: "Here's my Lighthouse report. Give me the three changes with the biggest impact for the least effort." Let measurement, not guesswork, drive what you optimize — it is genuinely common to spend a day optimizing the wrong thing because it felt slow, when the real cost was a single unindexed query or a 4 MB hero image you forgot to compress.