Never used badger but after discovering major perf issues in graphene graphql library for python, the issue tracker is sometimes a good place to look.

I found this one pretty quickly:

https://discuss.dgraph.io/t/db-write-latency-in-badgerdb-hig...

Its issue trackers. There have been sad bugs going on years deep into the project. Maybe they’re all mopped up in 2022 but I wouldn’t count on it. Its design does well on a certain usage profile at the expense of mixed read/write or other workloads. Cockroach has more money and could throw better developers (more experienced) at the problem. Haven’t looked at Pebble though.