Stop unnecessary re-renders in React: memo, useMemo, useCallback – and when not to
Your app re-renders too much and you're not sure where. How to find the actual hot spots with the React Profiler, fix…
Appesto
Tag: performance
Code splitting in Webpack: route-based, component-based, and where it stops helping
Dynamic imports, magic comments, and the exact split points that measurably improved a real app's Time to Interactive - plus the over-splitting…
Finding and killing bundle bloat with webpack-bundle-analyzer
A practical guide to reading the treemap, the four bloat patterns we find in almost every audit, and the exact config changes…
Postgres connection pooling in serverless: why it breaks and how to fix it
Each serverless invocation opens a new DB connection. At scale, this exhausts Postgres in seconds. PgBouncer, Neon's pooler, and the Neon serverless…
CSS View Transitions: native page animations without Framer Motion
The View Transitions API is now a Baseline feature in all major browsers. Here's how to use it in a React SPA…
Tree shaking in Webpack: why it silently fails, and how to verify it’s working
ES module static analysis, the sideEffects field, and the three most common reasons dead code ends up in your bundle anyway despite…
WebAssembly in 2026: when to reach for Wasm in a TypeScript stack
Wasm 3.0 is a W3C standard, WASI Preview 2 is stable, and Adobe, Figma, and Shopify run it at scale. Here's the…
React Server Components: a practical decision framework for 2026
RSC is the default in every major React framework now. The question is no longer whether to use it - it's knowing…
Bun vs Deno vs Node.js in 2026: benchmarks, trade-offs, and honest picks
Three viable JavaScript runtimes, each with a strong argument. After running all three in production, here's when we reach for each one…
Postgres indexing in practice: B-tree, GIN, BRIN, and when each one wins
Most slow queries aren't missing an index — they're using the wrong kind. A working tour of Postgres index types, partial and…