projections and disc space

EventStoreDB
1

Hi

Are by_category and by_event_type projections persisted to disc? We have a lot of fast streams with shortlived events. What will happen over time if a projection links to events in these shortlived streams, will the links consume disc space?

Thanks.

2

Assuming you are deleting them after (or using $maxAge etc) then they
will be deleted during scavenges.

3

Are you talking about deleting the original events?

4

Yes if you remove the original events they will be removed AND the
linktos pointing to them will be removed.

5

Thank you for the quick reply.