I love the idea of Durable Objects, and have thoughts about it in the health space (although having a single provider of them is probably a bad thing) but cross-cutting questions such as this seem to be quite difficult to achieve.
From the chat logs example in your article: how do you cope with a requirement such as "I as a user want to see all my latest thread activity in one place, across all my chat rooms?"
From the chat logs example in your article: how do you cope with a requirement such as "I as a user want to see all my latest thread activity in one place, across all my chat rooms?"