This code sample is a portion of a DHT implementation in Java. This example shows the code for the Messaging Nodes. There is also a Registry for which the Messaging Nodes connect and register. For a more detailed example of this implementation feel free to email me.
Distributed Hashtables (DHTs) are structured peer-to-peer (P2P) systems that have demonstrable scaling properties. The simplified DHT that I built uses information about a small subset – O(log N) – of peers within the system to make local decisions that ensure efficient routing of messages. This effort included development of wire formats for several control and data plane messages to construct routing tables and route content. DHTs are often used to support discovery and lookup services at scale.