Paxos STM is a robust implementation of an object-oriented Distributed Software Transactional Memory (DSTM) in Java, which is tolerant to machine crashes. It provides a convenient way of developing highly available and efficient services, by replicating a service on several machines and using atomic transactions to maintain replica consistency. Paxos STM’s design has been inspired by two concepts: Software Transactional Memory (STM) and Distributed Shared Memory (DSM), oriented on objects.