The original implementation of this "service" was in Redis using lua scripts. We hit the performance ceiling of redis, and rather than deciding to go with redi

The original implementation of this "service" was in Redis using lua scripts. We hit the performance ceiling of redis, and rather than deciding to go with redis-cluster, and dealing with the headache of managing persistent redis, we went this way, so we could consolidate data storage to scylladb/cassandra (it was cassandra at the time of rewrite, scylla now since we've migrated our data stores over).