I do know that they have limited the creation and looking at the docs for limitation, it seems like they have a 750 requests per second limit per space, which might not scale well. My idea was to create multiple spaces to distribute a load, e.g. sharding per customer, but if the availability is not that good, I might have to re-consider our choice.

The main reason we wanted to work with DO is that the egress traffic cost is reasonable, unlike AWS or Google Cloud where it is questionably high.