Exactly. Doing caching in a transactional MVCC system is hard. We plan to do careful data caching in Dgraph with this. Block level cache in Badger would be easy

Exactly. Doing caching in a transactional MVCC system is hard. We plan to do careful data caching in Dgraph with this. Block level cache in Badger would be easy. So would be key with version level cache in Badger.