WG v4 2024-12-17

[emiltin]

Participants

David Otterdahl
Emil Tin

Streams

There are some remaining topics to clarify, especially how their interact

• delta updates
• aggregation
• update rates

Status Aggregation

In a stream, aggregation should be possible to configure for each attribute.
It should be possible to include an attribute several times, with different aggregation, e.g. both min and max.

Automatic stopping of streams (Pruning)

If a stream is on be default, there's not really any need to turn it off.
When a consumer starts a stream, the producer will know that the consumer is listening. It can then use 'presence' message to detect if that consumer goes offline. It can then stop the stream if no consumers are left.

If a stream is always-on (cannot be stopped), presence messages are not used.