Node.js & Express

Node.js, Express, Fastify, NestJS, Bun, Deno

65 bites

Showing Interview + Intermediate

Test yourself: Top 30 intermediate Node.js & Express interview questions →Multiple choice, with the correct answer and why it is correct on every question. Free, no sign-in.

Intermediate interview questions in Node.js & Express, page 4

intermediate1 min read

Nested routes versus query params for related resources

Nested routes express ownership and scope clearly, query params on the flat resource are flexible for filtering and combining.

intermediate1 min read

Defining many-to-many relationships in Sequelize

Use belongsToMany through a join table, the through table holds the foreign keys, eager-load courses with include.

intermediate1 min read

JWT login and protected route flow in Express

Verify credentials, sign a JWT, client stores and sends it (Authorization header or httpOnly cookie), middleware verifies signature on protected routes.

intermediate2 min read

Unit testing Express auth middleware in isolation

Build fake req/res, use a spy/mock for next and res methods, assert next called on valid token and 401 sent on invalid.

intermediate1 min read

Diagnosing intermittent crashes with PM2

PM2 auto-restarts and runs cluster mode for availability, inspect logs and metrics, watch memory for leaks, capture errors.

We are hiring for this. Every open role lists the topics its interview covers, so you can prepare for the real thing rather than guessing.

See open roles