Node.js is a JavaScript runtime built on Chrome's V8 engine that allows you to run JavaScript on the server-side, enabling development of scalable network applications.

npm (Node Package Manager) is the default package manager for Node.js, allowing developers to install, manage, and publish JavaScript packages and dependencies.

What is middleware in Express?

Middleware functions in Express are functions that have access to request and response objects, can modify them, end the request-response cycle, or pass control to next middleware.

Node.js Interview Questions

371. What chaos-engineering strategies apply to Node.js services?

372. How would you validate resilience guarantees in distributed Node.js systems?

373. How do load-testing strategies differ for event-driven Node.js architectures?

374. How would you benchmark high-concurrency Node.js APIs accurately?

375. What anti-patterns commonly emerge in mature Node.js organizations?

376. How would you prevent platform sprawl across backend teams?

377. What governance models best support sustainable backend innovation?

378. How would you future-proof Node.js architectures against ecosystem shifts?

379. What signals indicate a Node.js platform migration should be considered?

380. How would you incrementally migrate legacy Node.js services to modern architectures?