Fault Tolerance Middleware for Cloud Computing

The Low Latency Fault Tolerance (LLFT) middleware provides fault tolerance for distributed applications deployed within a cloud computing or data center environment, using the leader/follower replication approach. The LLFT middleware consists of a Low Latency Messaging Protocol, a Leader-Determined Membership Protocol, and a Virtual Determinizer Framework. The Messaging Protocol provides a reliable, totally ordered message delivery service by employing a direct group-to-group multicast where the ordering is determined by the primary replica in the group.