React
How React Decides to Re-render
Renders are not DOM updates. Understand what actually triggers a render, what reconciliation does, and when memoization earns its keep.
2 min read
Category
React
15 articles
React
Form Handling with Server Actions and Progressive Enhancement
How React server actions let forms work before JavaScript loads, and the patterns needed to layer client-side validation and pending state on top.
2 min read
React
Profiling React Apps with the DevTools Profiler
A practical guide to using the React DevTools Profiler to find unnecessary re-renders and expensive commits before reaching for memoization.
3 min read
React
Portals, Event Delegation, and the Synthetic Event System in React
How React portals render outside the DOM tree while events still bubble through React's component hierarchy, and what that means for event handling.
2 min read
React
List Virtualization for Large Data Sets in React
How windowing libraries keep React lists fast at thousands of rows by rendering only what's visible, and where the technique breaks down.
2 min read
React
Data Fetching and Caching Patterns with TanStack Query
Practical TanStack Query patterns for query keys, cache invalidation, and optimistic updates that hold up in real React applications.
2 min read
React
Error Boundaries and Resilient UI Architecture in React
How to place error boundaries strategically in a React tree so a single failing widget degrades gracefully instead of blanking the entire page.
2 min read
React
React 19 Actions and the use() Hook Explained
How React 19's actions and the use() hook simplify pending state, error handling, and reading promises or context inside components.
2 min read
React
Concurrent Rendering and Transitions: What startTransition Actually Buys You
Concurrent rendering lets React interrupt its own work for something more urgent. Transitions are how you tell React which updates can wait.
3 min read
React
The Testing Library Philosophy: Test What Users Experience
Testing Library's core rule — the more your tests resemble how software is used, the more confidence they give you — changes what a good React test looks like.
3 min read
React
Controlled vs Uncontrolled Forms: Picking the Right Default
Controlled inputs became the reflexive default in React, but uncontrolled forms are often simpler, faster, and closer to how the platform already works.
3 min read
React
React State Management in 2026: Signals, Stores, and Context
The state management debate settled into a layered answer: different tools for local, cross-cutting, and server state, not one library for everything.
3 min read
React
Suspense for Data Fetching: The Part That Isn't Just Loading Spinners
Suspense is a coordination mechanism for async UI, not a spinner component. Understanding what it actually catches changes how you structure data fetching.
3 min read
React
useEffect Pitfalls and What to Reach for Instead
Most useEffect bugs come from using it as a general-purpose lifecycle hook. Here's how to tell when you actually need it — and when you don't.
3 min read
React
React Server Components, Explained Without the Hype
RSCs are not server-side rendering with a new name. They change where component code runs at all, and that changes what you can safely do in a component.
3 min read