bitraft

A Bitcask Distributed Key/Value store using Raft for concensus with a Redis compatible API written in Go.

Redis compatible API
Bitcask disk-based storage
Raft support with Finn commands
Compatible with existing Redis clients

Usage

$ go get github.com/prologic/bitraft
$ bitraft

Docker

You can also use the Bitraft Docker Image:

$ docker pull prologic/bitraft
$ docker run -d -p 4920:4920 prologic/bitraft

Example session

Commands:

SET key value
GET key
DEL key [key ...]
KEYS [WITHVALUES]
FLUSHDB
SHUTDOWN

Backup and Restore

To backup data:

RAFTSNAPSHOT

This will creates a new snapshot in the data/snapshots directory. Each snapshot contains two files, meta.json and state.bin. The state file is the database in a compressed format. The meta file is details about the state including the term, index, crc, and size.

Ideally you call RAFTSNAPSHOT and then store the state.bin on some other server like S3.

To restore:

Create a new raft cluster
Download the state.bin snapshot
Pipe the commands using the bitraft --parse-snapshot and redis-cli --pipe commands

Example:

bitraft --parse-snapshot state.bin | redis-cli -h 10.0.1.5 -p 4920 --pipe

This will execute all of the state.bin commands on the leader at 10.0.1.5:4920

For information on the redis-cli --pipe command see Redis Mass Insert.

License

bitraft source code is available under the MIT License.