Envoy: 利用自我組織機制的混合式點對點網路系統
Envoy: A Self-Organized Hybrid Peer-to-Peer System
Date Issued
2005
Date
2005
Author(s)
Lin, Zhang-Wen
DOI
en-US
Abstract
In recent years, P2P (Peer-to-Peer) systems have drastically changed the way we share resources and gather information. Existing P2P systems can be roughly classified into four families-decentralized unstructured, decentralized structured systems, partial-centralized, and hybrid systems. The first three families have their own strengths and weaknesses. Therefore, hybrid systems tends to simultaneously adopt various approaches in other families to complement drawbacks of others. Some hybrid systems tend to concord features of unstructured and structured ones, such as flexibility, robustness, low maintenance and efficiency. However, existing hybrid systems adopt centralized mechanisms or pre-select powerful peers.
In this paper we proposed Envoy, which organizes unstructured and structured P2P networks into a general-purpose hybrid P2P network without any kinds of centralized mechanism. To reinforce the structured overlay, only peers that meet several measures such as stability and bandwidth are eligible for serving on the overlay. Super-peers are automatically elected from the unstructured overlay and self-organized into the DHT overlay. Our self-organization mechanism ensures that elected peers are sufficient in number, stable and powerful enough. Through analysis and simulations, we prove that Envoy is scalable and low overhead even in the worst case.
Subjects
點對點網路系統
自我組織機制
混合式系統
Peer-to-Peer
Self-Organized
Hybrid System
Type
other
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