Exonum MerkleDB

MerkleDB is a document-oriented persistent storage which provides APIs to work with merkelized data structures. Under the hood, MerkleDB uses RocksDB as a key-value storage.

Features

• Supports list, map and set collections (aka indexes), as well as singular elements. Further, indexes can be organized into groups, allowing to create hierarchies of documents with arbitrary nesting.
• Automated state aggregation of top-level indexes into a single state hash, which reflects the entire database state.
• Ability to define data layouts in an intuitive, declarative format.
• Basic support of transactions: changes to the storage can be aggregated into a fork and then merged to the database atomically.
• Access control leveraging the Rust type system, allowing to precisely define access privileges for different actors.
• First-class support of long-running, fault-tolerant data migrations running concurrently with other I/O to the storage.

Usage

Include exonum-merkledb as a dependency in your Cargo.toml:

toml [dependencies] exonum-merkledb = "1.0.0"

See the description in Exonum docs for a more detailed overview, and the examples for the examples of usage.

License

exonum-merkledb is licensed under the Apache License (Version 2.0). See LICENSE for details.