[IMPROVE] Add missing indices used by read receipts

[sampaiodiego]

Adds two missing indices on Subscriptions collection used by read receipts queries:

{ rid: 1 }
{ rid: 1, ls: 1 }

And another on on ReadReceipts collection used to see who read a message:

{ messageId: 1 }

[wreiske]

I was just about to open an issue for this! The read receipts seem to take a really long time to load... I assume the new index helps the speed a bit? I was going to go digging but you beat me to it.

This is how long it takes currently:

[sampaiodiego]

I know for sure this indices helps on making rooms as read.. I can check if they help loading the list of users as well, or if there is missing index there too. thanks @wreiske

[sampaiodiego]

@wreiske I've added an index that will help.. But there are other improvements to do to make that screen load faster 👍

[wreiske]

@wreiske I've added an index that will help.. But there are other improvements to do to make that screen load faster 👍

Awesome, thanks! I use the read receipt info multiple times a day. :)