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Comment by noncoml | Hacker News Reader

Out of curiosity, why write https://github.com/cockroachdb/pebble and not just use https://github.com/dgraph-io/badger?

A big reason seemed to be compatibility with the RocksDB on-disk file format.

https://www.cockroachlabs.com/blog/pebble-rocksdb-kv-store/

Along with the other reasons, Badger is not that great. When you have the funding and presumably the developers they have, it makes sense to do something better.

Anywhere I can read more about issues with Badger?

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.

Well it says its SQL, not just a KV-store. That's a pretty ig difference to start.

Hmm? The pebble page doesn't say anything about SQL. It just says KV like Badger.

Did you miss the title? It literally says SQL in the title.

Pebble is a key-value store, not an SQL database.

No I don't see that either. document.title on the pebble Github page says:

    'cockroachdb/pebble: RocksDB/LevelDB inspired key-value database in Go'

in the article:

CockroachDB (or CRDB for short) consists of a distributed SQL layer on top of a distributed key-value store.

... and the question was about why they built the key-value store instead of using an existing one. The question clearly was about pebble, not CockroachDB, so why are you arguing about what CockroachDB is?

i’m not arguing anything. there was confusion about SQL being in the title and the storage being KV. so i was trying to relay information that may advance the conversation.

My bad, got commenters mixed up.

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