I've found the google/leveldb[1] source code to be immensely educational, authored by Jeff Dean and Sanjay Ghemawat. A relatively tiny codebase at that, used vi

I've found the google/leveldb[1] source code to be immensely educational, authored by Jeff Dean and Sanjay Ghemawat. A relatively tiny codebase at that, used virtually everywhere and the basis for facebook/rocksdb[2]. [1]: https://github.com/google/leveldb https://github.com/google/leveldb [2]: https://github.com/facebook/rocksdb https://github.com/facebook/rocksdb