Which part seems overcomplicated? This seems like a pretty basic setup for a web service with a (demanding-ish) SLA. > The core of the product is text which co

Which part seems overcomplicated? This seems like a pretty basic setup for a web service with a (demanding-ish) SLA. > The core of the product is text which concurrently might be only accessed by a few clients since it's enterprise software? Some Slack communities have a few thousand users. Text messages also need to be ordered correctly, so it's not as simple as emitting text. > latency of around half a second average around the world when you don't need concurrent access I presume you mean without regional latency, in which case cool? Redis reads are a lot faster than 500 ms so this number is pretty much all just business logic which depends on the application.