1582 articles
Master Node.js profiling with Clinic.js and V8 flame graphs. Identify CPU-bound code, async bottlenecks, and memory leaks before they impact production.
Node 22 makes the permission model stable. Restrict file system, network, and child process access with --allow-fs-read, --allow-net, and more. Essential for multi-tenant systems.
Harden Node.js with Helmet.js headers, rate limiting with Redis, SQL injection prevention, prototype pollution fixes, audit automation, privilege dropping, and --frozen-intrinsics.
Node 22.5+ includes native SQLite via node:sqlite. Run queries without external libraries, dependencies, or server setup. Perfect for CLIs, edge functions, and local-first apps.
Web Streams (WHATWG standard) are now built into Node 18+. Learn when to use ReadableStream vs node:stream, streaming LLM responses, and backpressure handling.