HooksWhat engineers saved
The Correct Way to Colocate State in React 19
How moving state down the tree eliminated 40% of re-renders at our fintech startup — with benchmarks.
RSC Boundaries in E-Commerce: A Production Case Study
Moving product pages to Server Components cut TTFB by 380ms.
useCallback Is Lying to You
When memoization makes things slower and how to profile it.
Testing Async Components Without Losing Your Mind
Patterns that survive Suspense, transitions, and concurrent mode.
forwardRef Is Deprecated — Here's the Migration Path
fetch() Caching Behavior Changed in App Router
Auto-Memoization Is Now Stable — What You Need to Know
onSuccess / onError Callbacks Removed from useQuery
Compound Components Pattern
Server Action Composition
Optimistic UI with useOptimistic
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React Architecture at Scale
From monolith to micro-frontends, this series maps every decision point a senior engineer faces when React apps grow past 100k LOC.
Concurrent React Demystified
Scheduler internals, Fiber reconciler, and why your code runs differently in Strict Mode — explained without hand-waving.
Production Error Handling Playbook
Error boundaries, Sentry integration, graceful degradation patterns, and how to ship with confidence when things go wrong.
TypeScript + React: The Definitive Patterns
Generic components, discriminated unions for props, branded types, and the patterns that make TypeScript feel like a superpower.
The RSC series saved our e-commerce migration. We shipped 2 weeks early.
Marcus Chen
Staff Engineer, Shopify
Finally an explanation of Fiber that doesn't require a PhD. Bookmarked permanently.
Priya Nair
Senior Frontend Dev, Stripe
My team reads Hooks every morning. It replaced our Slack architecture channel.
Diego Reyes
Tech Lead, Nubank