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

361. What runtime isolation strategies support safe plugin execution in backend systems?

362. How would you version plugin APIs safely across independently deployed services?

363. What governance challenges emerge in plugin-driven backend ecosystems?

364. How do Node.js build systems evolve with modern backend tooling?

365. What are the tradeoffs between TypeScript transpilation pipelines in Node.js ecosystems?

366. How would you optimize incremental builds for very large backend repositories?

367. What distributed caching strategies improve backend build scalability?

368. How would you design scalable integration-testing infrastructure for Node.js systems?

369. How do flaky distributed-system tests emerge in backend ecosystems?

370. How would you debug intermittent failures in asynchronous integration tests?