Building a production-grade web scraper with Playwright in Node.js: rate limiting, error recovery, stealth patterns, and data extraction that survives DOM changes.
A single slow query can exhaust your entire Postgres connection pool in under a minute, cascade to every endpoint, and take your service down. Here is how to set per-query timeouts with statement_timeout, cancel hung queries with AbortSignal, and handle the 57014 error before it becomes a pager alert.
Most Node.js codebases either hardwire every dependency or import a heavyweight DI framework and regret it. This post shows three practical DI patterns with working code: a manual wiring function, a lightweight factory-based container, and function-scoped injection. Pick the pattern that fits your project size.
Node.js ships a built-in fetch since v18, but it does not handle timeouts, streaming, or HTTP errors the way production code needs. Here is a zero-dependency HTTP client class that wraps fetch with every safeguard your API calls require.
Node.js has shipped a production-ready test runner since v20 that needs zero config, runs TypeScript natively, and handles 90% of what you reach for Jest or Mocha to do. Here is the migration path, the API patterns that matter, and the edge cases where you still need a third-party tool.
Every production Node.js API sits behind a reverse proxy, but most teams configure Nginx once and never revisit it. Here are the five Nginx configuration patterns that actually move the needle on throughput, latency, and reliability.
Prisma is easy to set up and hard to tune. Connection pool thrashing, N+1 queries, and slow batch operations hit every production deployment. Here are the exact patterns that fix them, with benchmarks.
Why one slow dependency cascades into a site-wide outage, and how to wire deadline propagation through HTTP APIs, database queries, and background jobs so your system fails fast instead of failing everywhere.
Explore advanced techniques to safeguard your Node.js applications against prevalent security threats. Learn practical solutions to real-world problems and implement working code for enhanced security.
Most queue incidents do not look like crashes. They look like rising memory, growing lag, and retry storms while the service is still “up.” This guide shows how to detect missing backpressure in Node.js workers and apply a practical concurrency + stream pattern that keeps throughput stable under load.
Adding "type": "module" to your package.json breaks imports, mocks, and dynamic requires in ways that are hard to predict. This guide walks through the practical migration path: incremental adoption, dual-package patterns, testing compatibility, and the traps that catch every team the first time.