Weirdly, and this may be a side effect of writing code that uses Cloud Spanner, but I tend to think of uuidv4's random distribution through keyspace as a _good_

Weirdly, and this may be a side effect of writing code that uses Cloud Spanner, but I tend to think of uuidv4's random distribution through keyspace as a _good_ thing. My instinct is to not use sequential-ish indices/primary keys, because I don't want to hotspot one part of the storage with all my writes for today in the same tablet.