Room will use different Dispatchers for transactions and queries. These are derived from the executors you provide when building your Database or by default will use the Architecture Components IO executor. This is the same executor that would be used by LiveData to do background work.

Does that mean if I use

withContext(<http://Dispatchers.IO|Dispatchers.IO>) { //db calls }

then likelihood is that Room merges this with whatever

Architecture Components IO executor

it uses internally? Or would

<http://Dispatchers.IO|Dispatchers.IO>

overwrite Room's default dispatcher. As far as I understand

Default

means

main

in Android.

It depends how you define your dbCalls

I can run db calls without making them suspend functions. How do I decided if those should be made

suspend

functions or not?

I can run db calls without making them suspend functions

Of course you can, but my point that if you already use them with coroutines, you shouldn’t do that Without “suspend” those db calls compiled to standard blocking functions, which not safe to use from main thread (or even any other suspend functions)(), so it’s a lot better to make them suspend, as described in article above

Thanks Andrey. That was very helpful. Thank you for taking the time to reply.