CDHT: a clustered DHT communication scheme for serverless (P2P) networks

The structured model or distributed hash table (DHT) based peer-to-peer (P2P) networks are favoured in research but not in real applications. It´s argued that the unstructured model is more suitable for the real world. This paper compares the advantages and disadvantages of the structured and the unstructured model, and proposed a clustered DHT (CDHT) communication scheme which addresses some of the fundamental problems of DHT by combining the structured model with the unstructured one. This combination leads to a new content location scheme which balances network traffic and improves the lookup efficiency for popular content. The experimental results show CDHT´s superiority over DHT in handling dynamic network conditions and avoiding hot spots.