Activity streams are such a common use case. It is very interesting that Soundcloud chose to do something different: https://developers.soundcloud.com/blog/rosh

Activity streams are such a common use case. It is very interesting that Soundcloud chose to do something different: https://developers.soundcloud.com/blog/roshi-a-crdt-system-for-timestamped-events https://developers.soundcloud.com/blog/roshi-a-crdt-system-f... Assembling the inbox on demand is quite interesting. I don't quite understand the querying and operations involved with Roshi for doing that.