Amazon distriburted services

Amazon is one of the largest e-commerce companies which provide different services for various website around the world using its distributed servers. These servers are proven to errors, faults, and failures which necessitates reliability, consistency and flexibility to reconfigure and keep persistent state for the data hosted by those servers. Dynamo, incrementally scalable depend upon the current workloads, provide reliability and availability for major Amazon services. Although versioning and conflict resolutions mechanism are used to provide consistency still it undermines it in some scenarios. From developer point of view, porting and new development a bit more complex because of Dynamo's consistency model and reconciliation logic. Also, it uses Full Membership model where each peers have knowledge of every other peer as for as stored component is concerned. This Full membership model limit scalability because the routing tables are developed by continue gossiping which produce overhead. The problem could be solved by extending it with Distributed DHTs or P2P Systems (which is under consideration of our research).