ERR_HEAP_OUT_OF_MEMORY · Node.js, V8, Docker, Kubernetes
Raise heap only after checking RSS and leak signals
UnhandledPromise · Express 4 / 5
import 'express-async-errors';
MODULE_NOT_FOUND · Node.js, npm, TypeScript
rm -rf node_modules && npm ci
EADDRINUSE · Node.js, Express, Fastify
lsof -ti:3000 | xargs kill -9
