Backend Dev
Why Your Node.js App Is Fast Locally but Slow in Production
A senior engineer’s deep dive into performance illusions, real bottlenecks, and hard-earned lessons If you’ve shipped a Node.js service to production, you’ve almost certainly…
// category archive
system-design
4 articles
Backend Dev
Redis Is Not a Database (Until You Treat It Like One)
Redis has an identity problem—and most teams make it worse. On paper, Redis is simple: an in-memory data store with optional persistence.In practice, Redis…
Backend Dev
Sprite Sheets in Node.js: How Video Platforms Show Fast Hover Previews Without Loading Hundreds of Images
Modern users don’t think in milliseconds — they think in feel. If a UI feels slow, it’s broken. And one of the most obvious…
AI
How to Review AI-Written Code Like a Senior Engineer
A practical guide based on real-world experience AI writing code fast isn’t surprising anymore. That part of the conversation is mostly over. What still…