NestJS · Senior · Question 13 of 75

How do you reduce cold-start time of a Nest app on serverless platforms?

1Add more modules to AppModule
2Start a new Nest app for every request
✓Correct answer: Bundle the app, cache the bootstrapped instance between invocations, lazy-load heavy modules and avoid connecting to many services on startup

Explanation

Initialization (module scanning, DI graph, DB connections) dominates cold starts. Reuse the app across warm invocations.

Further reading

Test yourself

Take the NestJS · Senior quiz: questions and options are shuffled, and you get a review of your mistakes at the end.