EventsSourcing-on-Azure-Functions
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MerrionComputing
TimeStreams - event streams keyed by timestamp
Another possible evolution of the Eventstream would be a stream keyed by timestamp which allows add/edit/update/delete but only for future dated events.
This could keep very similar code to the existing event stream code and projections would be able to run over them too - but would use different classes/attributes and different notifications as they would have a different business meaning.
Would need to use a common time frame - and I think there is a minimum sensible granularity to be found too (maybe 1 second?)
Thoughts
It would be possible to insert retrospective events which means that any cached or snapshotted state impacted would need to be recalculated. It would be preferable if this did not require the application developer to do any extra code
Also would need some strategy as to what to do in the event of a collision. Maybe a .00 - .99 extension so that the events at the same time are processed in the order in which they are known about.
Will use the same type of attribute as for event streams but with a different attribute name to differentiate e.g. :
[TimeStream("Bank","Account", "A123456")]