TTL-Chord: A Chord-based Approach for Semantic Web Services Discovery

Recently, P2P-based discovery methods for semantic Web services
require special attention from collaboration and interoperability in distributed computing environment. In this paper, we present an approach for semantic Web services discovery through a structured P2P network based on Chord. This protocol is chosen because it is scalable and still achieves very good resilience and proximity performance. However, because the discovery of Web services is made semantically, the search time will be significant. For this reason, we integrate a proposed algorithm into original implementation of Chord, where we mark the sent requests by a TTL (Time To Live). After this proposition, we present some experimental results wherever we analyze and discuss the influence of the TTL on the discovery operation and on the network stability.