5 posts.
A practical playbook for React performance. Profile with React DevTools, apply React.memo deliberately, fix key issues, virtualize long lists, and avoid premature optimization.
Use React.lazy and Suspense to code-split a React app, design fallback UI, place boundaries thoughtfully, and understand how Suspense extends to data fetching.
A practical guide to React's useMemo and useCallback hooks, covering referential equality, when memoization helps performance, when it backfires, and how to profile first.
Learn how to read Postgres EXPLAIN and EXPLAIN ANALYZE output, spot expensive operations, and apply practical indexing and rewrite techniques to speed up queries.
What Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift measure, how to read them, and the practical fixes that move each one.