NewCache return a fresh empty cache with ref to the State Store.

NewStore creates a new instance.

StateDbName is the filename of the kvstore.

ErrValueNotFound returned when the value for a key is nil.

State commit information.

KVCache provides a cached used for r/w access to storage.

Store provides access the the levelDb and Tree.

Cache is the used to batch writes for commit.

TreeReader provides read access to committed state.

TreeWriter writes to state and provides a snapshot of committed state.