I have recently started implementing different distributed system protocols to get some understanding how they work. I think that using Akka Actors to simulate hosts is a good choice because they are easy to set up. What is more you can kill actors on demand to test some failure scenarios.
First protocol I implemented is Paxos - probably the most important consensus protocol, which guarantees storng consistecy, full transactions, read/write failover and prevents from data loss. This comes with the cost of higher latency and lower throughput. In terms of CAP theorem, Paxos is used to make your system CP. I used this sweet article as a reference.
Implementation can be found on my github repository. Go to the Test.scala and run some simulations.
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