An awesome visual representation of RAFT that you guys should check out.

http://thesecretlivesofdata.com/raft/

Some other good resources.

http://thinkdistributed.io/blog/2013/07/12/consensus.html

https://ramcloud.stanford.edu/wiki/download/attachments/11370504/raft.pdf

https://github.com/mgodave/barge

- M