Alternatives to websocket protocol/ listening to broadcasts

[Tim87]

@dirvine hinted on implementing push notifications somewhere along the road:

@dirvine

This can be achieved by registering presence and vaults forwarding notifications (that you pull form). It’s possible in many ways, so we will need to choose the most efficient mechanism that is also not a network burden.

This will probably require deterministic caching (similar to expanded groups) though to allow many millions of push notifications to popular data (think twitter followers etc.) .