This is the binary distribution of Apache Ratis.
Apache Ratis is a java library that implements the RAFT protocol.
First of all: it's a library. To use it use java dependency management tool (such as maven and gradle). The required artifacts are available from the maven central or the apache nexus under the org.apache.ratis groupId.
This distribution also includes some example raft server in the examples directory which includes an example implementation of the key raft elements: raftlog and state machine. The are for demonstration purposes only.
For more deails see: