What are the key features of Node.js?
Single-threaded, non-blocking I/O — handles thousands of concurrent connections on one thread using the event loop.
Built on V8 — compiles JavaScript to machine code for high performance.
Event-driven architecture — based on the Reactor Pattern; reacts to events instead of blocking.
Cross-platform — runs on Linux, macOS, and Windows.
Huge ecosystem — npm, the largest package registry in the world.
JavaScript everywhere — same language on frontend and backend.
Fast and scalable — ideal for I/O-heavy workloads like APIs, real-time apps, and streaming.
Built-in modules —
fs,http,crypto,stream,cluster,worker_threads, etc.Supports modern JavaScript — ES Modules, async/await, top-level await.
Active community and LTS support — regular releases with long-term stable versions.
Don't just list features in a bullet-point fashion. For each feature, briefly explain why it matters practically.
Connect features to real-world benefits like reduced latency, developer productivity, and ecosystem strength.