Hi, I have a question on how and why to use dispatchers. I have a ktor project in which I fetch a number of results from the database, then I need to split these results and send them to a separate service, waiting for the response. I've implemented this using Deferreds, and using awaitall() on them. My current implementation creates a

CoroutineScope(<http://Dispatchers.IO|Dispatchers.IO>)

and then uses

async

on it to create the Deferreds. My question is whether this is the correct way to do this, or if I should use the

coroutineScope

function to create the scope and call

async

from within. Unsure if this is a #ktor or #coroutines question, seems more like the former.

This is a #coroutines question, but I would recommend doing

routing {
    get { // `this` is a CoroutineScope already
        // inside of your handler
        val one = async(<http://Dispatchers.IO|Dispatchers.IO>) { ... }
        val two = async(<http://Dispatchers.IO|Dispatchers.IO>) { ... }
        val three = async(<http://Dispatchers.IO|Dispatchers.IO>) { ... }
    }
}

this attaches your

async

coroutines to be part of your route’s lifecycle