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Languages & runtimes · #nodejs
A step‑by‑step diagnostic guide for when nodemon does not restart a Node.js app after file edits, with checks, fixes, and escalation paths.
Avoid 'too many open files' errors and restart loops by moving from default nodemon usage to a structured nodemon.json configuration.
Stop memory bloat in read-heavy APIs by switching from full Mongoose documents to lean queries. This guide explains when to use each, trade-offs, and how to implement a high-performance read model.
Stop repeating setup code in your Node.js tests. Learn how to use Mocha hooks to manage shared state, ensure test isolation, and avoid the common pitfalls of state leakage.
Missing or silent Handlebars partials? Use this step‑by‑step diagnostic guide to locate the root cause, fix registration, case, or cache issues, and know when to raise the problem.
Learn how to turn on Moleculer’s built‑in action caching, configure a storage backend, verify cache hits, and roll back the change if needed.
Learn how Knex.js transactions automatically commit on success and roll back on error, preventing partial writes when inserting related rows such as orders and line items.
Learn the minimal Express 4.x configuration needed to trust a terminating reverse proxy, set Secure cookies, and log the real client IP while avoiding common misconfigurations.
Validate JSON payloads in Node.js with AJV and Draft‑07 schemas. See a concise code example, learn about limits, and avoid common pitfalls for robust data validation.
nodemon
mongoose
mocha
handlebars
moleculer
knexjs
express
json