Document Type: Review Paper
Department of Computer Engineering, Guilan University, Guilan, Iran.
As Grid systems are distributing geographically, the heterogeneity and dynamicity of their resources are increased. One of the important issues is the discovery services with more scalable and dynamic environments. In this paper, we review the decentralized discovery mechanisms based on peer-to-peer (P2P) technology. We classify the discovery approach into three main categories: Unstructured, Structured, and Super-Peer. We describe the major development in these three categories and provide a discussion in term of efficiently, scalability, and dynamicity features of these approaches.