SpiceDB is an open source, Google Zanzibar-inspired, database system for creating and managing security-critical application permissions.

SpiceDB

When would something like this happen? (and what's the recommended course of action?)
```2 UNKNOWN: max retries exceeded: unable to write relationships: ERROR: could not serialize access due to read/write dependencies among transactions (SQLSTATE 40001)```

I'm trying to seed our prod relations into spicedb (postgres datastore)

ah found the problem - i have a lot of resources that *all* users have access to. I'm using the `user:*` subject to denote these, and while seeding i was parallelizing the migration of around 1K resources at a time. since this was operating on multiple of these `user:*` objects, this was happening. i'm not sure why this didn't happen the first time I started the seeding though, this was around the 4th/5th time i ran the script and started seeing this problem

that seems to pose a problem actually, if i cant parallelize at all, then it'll take a really long time. is this expected behaviour? 2 resources that the same subjects have a relation with can't be added in parallel?