FrontendGuide
Core Web Vitals in Practice: Fixing LCP, INP, and CLS on Real Sites
Fix Core Web Vitals on real sites: measure LCP, INP, and CLS from real users with the web-vitals library, then apply the fixes that move your 75th percentile.
Tag
Performance
Tutorials, guides, and deep dives that cover Performance.
JavaDeep dive
Java Virtual Threads in Practice: Scaling Blocking Code Without Going Reactive
Learn how Java virtual threads scale blocking code: how they work, a runnable HttpClient fan-out, pinning, ThreadLocal pitfalls, and Spring Boot setup.
BackendGuide
Caching Strategies with Redis: Cache-Aside, Write-Through, and When to Use Each
A practical guide to Redis caching in TypeScript: cache-aside, TTL jitter, safe invalidation, write-through, write-behind, stampede fixes, and eviction.
JavaScriptDeep dive
The JavaScript Event Loop, Finally Explained: Tasks, Microtasks, and Rendering
Learn how the JavaScript event loop runs tasks, microtasks, and rendering in browsers and Node.js, with runnable ordering puzzles and fixes for a blocked loop.
BackendDeep dive
Database Indexing Explained: How B-Tree Indexes Really Speed Up Your Queries
How PostgreSQL B-tree indexes work, how to read EXPLAIN plans, and how to design composite, covering, partial, and expression indexes that actually get used.