Node.js Interview Questions
Event Loop & Concurrency
Tick phases, microtasks, macrotasks, and concurrency model.
View sample →Streams & Buffers
Readable/writable streams, piping, backpressure, and Buffer usage.
View sample →HTTP Frameworks
Express, Koa, Fastify, routing, middleware patterns.
View sample →Error Handling & Observability
Error propagation, uncaught exceptions, logging, and tracing.
View sample →Security & Authentication
OWASP concerns, JWT, OAuth2, input validation, and rate limiting.
View sample →Performance & Scaling
Clustering, process managers, caching, and horizontal scaling approaches.
View sample →Testing & CI
Unit/integration testing, mocks, and CI pipelines for Node.js.
View sample →Ecosystem & Tooling
Package managers, transpilers, TypeScript adoption, and debugging tools.
View sample →Practice with AI mock interviews
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