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

SpiceDB

the flags you're looking for are `max-open`:

```
      --datastore-connpool-read-max-open int                     number of concurrent connections open in a remote datastore's connection pool (default 20)
      --datastore-connpool-write-max-open int                    number of concurrent connections open in a remote datastore's connection pool (default 10)
$ spicedb serve -h  | grep "max-open"
      --datastore-connpool-read-max-open int                     number of concurrent connections open in a remote datastore's connection pool (default 20)
      --datastore-connpool-write-max-open int                    number of concurrent connections open in a remote datastore's connection pool (default 10)
```