Design Architecture for Async API Service returns JobID

I guess it's super basic, but I don't even know the name of the design to even search for it (and I've looked).

I need to create an API service in golang that upon request from a client, it responses with JobId for the client to check on some subscription or something. When the service is done executing the request (preparing a file for instance) it would publish it to some channel/broker/topic for the client to pick it up.

What is the name of such design so I can look for examples? Thank you