Druid Metadata Store Management

I have been trying to lookup best practice guide on how to manage the data inside of the metadata storage.

The druid_tasks will seem to grow indefinitely. Are they supposed to be archived or removed after certain time? druid_segments lives there as well. How to handle general metadata storage size grow? thanks.

I hope you get an answer because I want to know as well.

Can someone share their experience on their druid cluster in production? How do you manage the growth of metadata store in generally?