terarkdb VS pebble

Inspired from LevelDB, Facebook forked LevelDB and created RocksDB (2012), a more concurrent and efficient key value store that uses multi-threaded compaction to improve read and write performance. Recently Bytedance, the company behind TikTok has also released a key value store called terakdb that improves over RocksDB. Sled is another embedded key value store in Rust, that uses a hybrid architecture of B+ Trees and LSM Tree (Bw Trees). These fall under the category of embedded data stores.

To improve the compacting speed of L0 files, we took inspiration from the design of the CockroachDB storage engine pebble.

https://github.com/cockroachdb/pebble ?

Pebble is a LevelDB/RocksDB-inspired key-value database focused on performance. PebbleDB is replacing Fantom’s previous RPC software to match Fantom’s sheer throughput. PebbleDB is consistently faster than previous options and it has helped the Fantom network to consistently reach synchronization with the network quicker while reducing the duration of API requests.

https://github.com/cockroachdb/pebble Pure go SSD native key-value store. You could think of it as map[[]byte][]byte on persistent storage.

Genji is a document-oriented, embedded, SQL database. It is build over Pebble which is a port of RocksDB in Go, by the authors of CockroachDB.

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

There's the semi-recent pebble from the folks that make cockroach db. Haven't used it, but seems promising: https://github.com/cockroachdb/pebble