golang background worker process inside api view

We are planning to move to golang from django.

To send an email or sms, we do celery workers with redis/rabbotmq in Django. But how can we do that background tasks on golang.

Eg:

def api_view():

 // logic

 // celery tasks- call email/sms service

 // immediate response to client
 return Response()

How can we do in golang

fun ApiView(w http.ResponseWriter, req *http.Request){

 //logic

 // need to call email/sms service


 fmt.Fprintf(w, "TEST")
}

Is there anything we can start new go routine (without additional redis/workers) inside the API view of gorilla/mux ?

Thanks.

Solution

Yes! As comments stated you can spawn a new go routine within the context of your view. The goroutine gets its own stack and allows it to operate "asynchronously" from the view handling function:

func ApiView(w http.ResponseWriter, req *http.Request){

 //logic

 // need to call email/sms service
 go sendEmail(someEmailAddress)

 fmt.Fprintf(w, "TEST")
}

This will execute sendEmail using a go routine and immediately write TEST to the caller.

While trivial it is not equivalent to celery redis/rabbitmq:

How do you handle failures?
How do you bound concurrency (worker pool)
How do you buffer tasks? (ie currently in rabbitmq it is out of process)
How do you retry?
Should the async task be in a different process/memory space?

None of the above are particularly difficult, and completely doable (and plenty of patterns/blogs/libraries exist for doing this exact thing)