read model in shared storage accessed directly by services

EventStoreDB
1

Hi

Would you consider it bad practice if a read model persisted to some shared storage, resulting from events produced by some aggregate residing in a service, is being accessed directly by other services?

Thanks

2

are these other services also writing to this shared database, same tables?

3

No, they are only using the tablea for querying

4

this is a good reason to use it. Bring the data as close to the (querying) consumer as you can.

5

The alternatives would seem to be building some query layer on top maybe using rest or letting the other sevices subscribe to events and building their own readmodel..

6

So long as everyone understands the guarantees about what database will be consistent with what state, then yes. This is just what a read model is for!