Cross shard transactions are “coming soon”. So, this is just like having multiple postgres clusters.
replyCross shard transactions are supported, but we don't have support for atomic 2pc cross shard transactions, its WIP
replyCurious to compare your implementation to ours [1] some day (if you guys open source it).
replyAre you one of the developers ? If so, you need to add a specific page explaining in detail the guarantees that this gives.
replyFor example: point 08 says "Assign different tables or workloads to different shard groups" and point 02 says "Split hot shards as workloads grow". How do those interact ? Can a single table be split across multiple shards ? If so don't you need 2pc to enforce primary key constraints ?
The intro pages just read as AI slop.