Example: How to save all messages to a datastore (Redis, Postgres or equivalent)

[pglombardo]

🚀 Feature Request

A common request by users is to save all incoming messages to a topic to an external datastore. We should add an easy to comprehend and use example.

🔈 Motivation

🛰 Alternatives

📎 Additional context

[graemewelton]

An option for users is to make use of the free Timebase Historian - www.timebase.com