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Languages & runtimes · #nodejs
Build safe, dynamic SQL filters in Knex.js using conditional .where() calls and parameterized values. Avoid string concatenation and SQL injection.
Sequelize transactions let you bundle database operations into an atomic unit. Learn how to start, commit, rollback, and use nested transactions with async/await, including pitfalls and best‑practice patterns.
Learn how to diagnose and fix 'TimeoutError: Navigation timeout exceeded' in Puppeteer by optimizing waitUntil states and timeout settings.
Learn how to implement Pug mixins to create reusable UI components, reduce HTML duplication, and manage complex template structures in Node.js environments.
A concise architecture note for running a Node.js API with PM2 cluster mode: requirements, minimal config, trust boundaries, operational checks, and failure triggers.
Passport.js leaves the key architectural choice to you: server-side sessions with passport-local, or stateless tokens with passport-jwt. Compare the real trade-offs — revocation, scaling, CSRF, XSS — then implement and validate session auth concretely.
Learn how to enable, use, and reset DNF module streams on Rocky Linux to get exact versions like Node.js 14, with steps, trade‑offs, and a reset procedure.
When building microservices with Moleculer, deciding how to handle API evolution matters. This guide compares the built‑in version property, name‑based versioning, and custom middleware approaches, then walks through a concrete example and how to verify it works.
Spot event loop blocking, run trace‑sync‑io, measure delay with perf_hooks, and use clinic.js flamegraph to verify fixes that restore low latency.
knexjs
sequelize
puppeteer
pug
pm2
express
rockylinux
moleculer