Skip to main content

Node.js Internals

The event loop, streams, memory management, and concurrency underneath the Node.js API.

Contents

Read as Reels →16 sections

01Introduction→02Why and When You Need This→03Async→04Performance→05Module Loading→06fs→07streams→08Event Loop→09Async I/O: Non-Blocking Operations at Scale→10Promises and Async/Await: Modern Async Patterns→11Concurrency Models: Threads, Processes, and Clusters→12Memory Management and Garbage Collection→13Production Scaling: CPU-Bound vs I/O-Bound Workloads→14HTTP Request Lifecycle→15The Node.js Runtime & Event Loop, Bottom-Up→16A Worked Example: Tracing an Express Request Through the Runtime→