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Node.js Performance Optimization Guide

Node.js Performance Optimization Guide

Node.js Performance Optimization Guide

Node.js Performance Optimization Guide

Node.js Performance Optimization Guide

Node.js Performance Optimization Guide

Node.js powers high-throughput web applications, but performance requires understanding its single-threaded event loop and non-blocking I/O model.

Event Loop Fundamentals

The event loop processes callbacks in phases: timers, I/O callbacks, idle/prepare, poll, check (setImmediate), and close callbacks. Each phase has a FIFO queue of callbacks. Blocking any phase delays all subsequent callbacks.

Avoid blocking the event loop. CPU-intensive operations (JSON parsing, cryptography, template rendering) block all other requests.…