NestJS · Middle · Question 20 of 75

Which lifecycle hook is the right place to open a connection that other modules rely on during startup?

✓Correct answer: onModuleInit (or an async factory provider)
2The class constructor, with await
3onApplicationShutdown

Explanation

Constructors can't be async. Nest awaits async onModuleInit hooks before calling onApplicationBootstrap.

Further reading

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