Overlay Caching Scheme for Overlay Networks
نویسندگان
چکیده
Recent years have seen a tremendous growth of interests in streaming continuous media such as video data over the Internet. This would create an enormous increase in the demand on various server and networking resources. To minimize service delays and to reduce loads placed on these resources, we propose an Overlay Caching Scheme (OCS) for overlay networks. OCS utilizes virtual cache structures to coordinate distributed overlay caching nodes along the delivery path between the server and the clients. OCS establishes and adapts these structures dynamically according to clients’ locations and request patterns. Compared with existing video caching techniques, OCS offers better performances in terms of average service delays, server load, and network load in most cases in our study.
منابع مشابه
Cooperative caching for multimedia streaming in overlay networks
Traditional data caching, such as web caching, only focuses on how to boost the hit rate of requested objects in caches, and therefore, how to reduce the initial delay for object retrieval. However, for multimedia objects, not only reducing the delay of object retrieval, but also provisioning reasonably stable network bandwidth to clients, while the fetching of the cached objects goes on, is im...
متن کاملAn IP address based caching scheme for peer-to-peer networks
Distributed hash tables (DHTs), used in a number of current peer-to-peer systems, provide efficient mechanisms for resource location. Systems such as Chord, Pastry, CAN, and Tapestry provide strong guarantees that queries in the overlay network can be resolved in a bounded number of overlay hops, while preserving load balance among the peers. A key distinction in these systems is the way they h...
متن کاملP3ON: Proximity-based Peer-to-Peer Overlay Networks
Peer-to-peer(P2P) overlay networks provide robust, scalable file sharing services. The hop distance between two virtual nodes in P2P overlay networks is irrelevant to the real distance between two nodes. Therefore, many lookup operations may be executed, without considering the real distance, even though a node wants to find a file object located in another node within the same subnet. To overc...
متن کاملImproving Peer to Peer Search With Multi-Tier Capability-Aware Overlay Topologies
The P2P model has many potential advantages (e.g., large scale, fault-tolerance, low cost of administration and maintenance) due to the design flexibility of overlay networks and the decentralized management of cooperative sharing of information and resources. However, the mismatch between the randomly constructed overlay network topology (combined with its broadcaststyle message forwarding inf...
متن کاملSelf-configuration protocols for P2P networks
This paper proposes and evaluates different protocols for individual peers to self-configure the P2P overlay networks in various network environments. For smallscale homogeneous networks, an optimizer peer selection protocol is proposed and found to be superior to other peer selection protocols, including random, egoist, altruist and greedy protocols, in terms of network diameter and node eccen...
متن کامل