Node.js Is Multi-Threaded: How libuv Runs Your Blocking Work
The event loop is single-threaded, but Node.js offloads blocking operations to a libuv thread pool. Here's how it works, what uses it, and how to tune it.
Node.js
Runtime behaviour, queues, streams and the parts of the platform that bite in production.
Node.js articles
Node.js I/O Model and Its Strengths for Realtime Applications
Explains Node.js non‑blocking I/O and why it suits realtime, low‑latency applications.