pubsub: split cache from persistence

Description

Historically, the database-based Pubsub persistence provider relies on heavy caching. This mechanism is complex and therefor error prone. It's also not needed for light usage.

Environment

None
Fixed

Assignee

Guus der Kinderen

Reporter

Guus der Kinderen

Labels

None

Expected Effort

None

Ignite Forum URL

None

Components

Fix versions

Priority

Major
Configure