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

301. How would you evaluate whether a Node.js architecture is becoming operationally unsustainable?

302. What signals indicate backend platform fragmentation in Node.js ecosystems?

303. How do you balance framework conventions with team autonomy in Node.js organizations?

304. How would you define architectural fitness functions for Node.js services?

305. What governance practices best support large-scale Node.js platforms?

306. How would you prevent abstraction overengineering in backend Node.js systems?

307. What are the tradeoffs between shared infrastructure and service independence?

308. How do large organizations coordinate Node.js runtime upgrades safely?

309. How would you establish Node.js engineering standards across distributed teams?

310. What operational risks arise from fragmented backend tooling ecosystems?