Nest.js · question
Q.05 of 44
What is middleware in Nest.js and how do you implement it?
← All Nest.js questions
Re-explain
Middleware functions execute before the route handler. They have access to request and response objects and can modify them.
@Injectable()
export class LoggerMiddleware implements NestMiddleware {
use(req: Request, res: Response, next: NextFunction) {
console.log(`${req.method} ${req.url}`);
next();
}
}
// Apply in module
export class AppModule implements NestModule {
configure(consumer: MiddlewareConsumer) {
consumer
.apply(LoggerMiddleware)
.forRoutes('users');
}
}
Rewriting in plainer words…
This answer doesn't lend itself to a diagram - it reads best . No credits were charged.
The model's verdict: “”
This answer is explained by a shared concept diagram -
open →
Point the redraw:
How well did you know this?
AI:
Saved in this browser - sign in to keep your review list.
How should your speech become text?
Listening… your words appear above as you speak - tap Stop when you're done.
Recording · cr - tap Stop & transcribe when you're done.
Transcribing with AI…
Voice:
Keep going - a few more words and AI can grade it.
Interview lens
Likely follow-ups, what you can say, and the weak answers to avoid.
Pro · $10/mo
38 of 44 Nest.js answers are gated.
Full answers, code samples, AI explanations - simpler, deeper, or as an interactive diagram. Cancel anytime.
-
Full answers + code
-
AI explain - simpler, deeper, or visualized
-
1,000 AI credits / month
-
Cancel anytime
