[WIP] ...coming soon
The ledger exists as a peer process utilizing levelDB. It supports the high level transaction flow - read-write-set simulation, endorsement, MVCC check, file-based blockchain transaction log, and state database.
v1 architecture has been designed to support various ledger implementations such as couchDB, where more complexity with rich queries, pruning, archiving, etc... becomes possible.
For more information on the current state of ledger development, explore the corresponding JIRA issue - https://jira.hyperledger.org/browse/FAB-758