I cannot be sure about badger version counter to be consistent among replicas/followers between failures and leader changes so I added version counter for each key to the value. Since I have already added a data type info as 1 byte to encode/decode many Go types, adding version was easy. I saved badger’s user metadata for future requirements. I will use badger’s own item.Version() to track history of a key or to do replay for some scenarios.
Sure, I will post whatever useful for badger and community.