Something I've noticed: Node.js articles tend to fall into two camps. Either they're uncritical hype pieces ("Node is fast! Netflix uses it!"), or they're contrarian teardowns ("Node is terrible for X, Y, Z reasons"). Neither is useful when you're actually trying to decide whether to use it for something.
So here's a different take. Five specific development scenarios where Node's architecture gives you a real, structural edge — explained in terms of why, not just that. Plus honest notes on where it stops working.
The Architecture Point That Actually Matters
Before the list: one concept that explains most of Node's strengths and weaknesses.
Traditional multi-threaded servers hand each incoming request its own thread. A thread sits idle waiting for a database response. Under high concurrency, you exhaust your thread pool before you exhaust your hardware. You hit a ceiling.
