ZODB.Architecture.Storage Interface.registerDB

Documentation
Register a database for distributed storage invalidation messages.
Parameters
TypeNameDefaultDocumentation
DBdb A database to be notified of objects that need to be invalidated
PyIntlimit The maximum number of objects to invalidate. If more objects need to be invalidated than this limit, then all objects are invalidated. This argument may be None, in which case no limit is set.
Note
Non-distributed storages should treat this is a null operation.

Storages should work correctly even if this method is not called.