Nestjs Request and Application Lifecycle
What is the order of execution of the following processes in a request, for a route that implements: middleware, pipes, guards, interceptors, and any other potential request process
The common order is:
- Interceptors (before the stream is manipulated)
- Interceptors (after the stream is manipulated)
- Exception filters (if any exception is caught)
What is the lifespan of modules and providers in a NestJS application? Do they last for the lifespan of a request, or the application, or something else?
They do last for the lifespan of the application. Modules are destroyed when a NestApplication or a NestMicroservice is being closed (see
close method from
Are there any lifecycle hooks, in addition to OnModuleInit and OnModuleDestroy?
No there aren't at the moment.
What causes a Modeule to be destroyed (and trigger the OnModuleDestroy event)?
See my answer to the second point. As you look interested in lifecyle hooks, you might pay some interest to issues #938 and #550