A Survey And Comparison Of Peer To Peer Overlay Network Schemes Pdf
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- A Persistent Structured Hierarchical Overlay Network to Counter Intentional Churn Attack
- A survey and comparison of peer-to-peer overlay network schemes
- Distributed hash table
Over the Internet today, computing and communications environments are significantly more complex and chaotic than classical distributed systems, lacking any centralized organization or hierarchical control.
In this paper we analyze the functional and non-functional requirements of peer-to-peer P2P systems that go beyond the needs of the well explored file-sharing P2P systems. Four basic subcategories are suggested to classify the non-functional requirements: adaptability, efficiency, validity and trust. Similarly, the functional requirements are divided into user-triggered and system-triggered functions. Then, we present and discuss several existing solutions following different design approaches in order to reveal their suitability for different types of P2P applications. More particularly, we capture the characteristics of structured and unstructured overlay networks.
A Persistent Structured Hierarchical Overlay Network to Counter Intentional Churn Attack
Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. A survey and comparison of peer-to-peer overlay network schemes Abstract: Over the Internet today, computing and communications environments are significantly more complex and chaotic than classical distributed systems, lacking any centralized organization or hierarchical control. There has been much interest in emerging Peer-to-Peer P2P network overlays because they provide a good substrate for creating large-scale data sharing, content distribution, and application-level multicast applications. P2P networks potentially offer an efficient routing architecture that is self-organizing, massively scalable, and robust in the wide-area, combining fault tolerance, load balancing, and explicit notion of locality. In this article we present a survey and comparison of various Structured and Unstructured P2P overlay networks.
A distributed hash table DHT is a distributed system that provides a lookup service similar to a hash table : key-value pairs are stored in a DHT, and any participating node can efficiently retrieve the value associated with a given key. The main advantage of a DHT is that nodes can be added or removed with minimum work around re-distributing keys. Keys are unique identifiers which map to particular values , which in turn can be anything from addresses, to documents , to arbitrary data. This allows a DHT to scale to extremely large numbers of nodes and to handle continual node arrivals, departures, and failures. DHTs form an infrastructure that can be used to build more complex services, such as anycast , cooperative web caching , distributed file systems , domain name services , instant messaging , multicast , and also peer-to-peer file sharing and content distribution systems. DHT research was originally motivated, in part, by peer-to-peer P2P systems such as Freenet , Gnutella , BitTorrent and Napster , which took advantage of resources distributed across the Internet to provide a single useful application. In particular, they took advantage of increased bandwidth and hard disk capacity to provide a file-sharing service.
Handbook of Peer-to-Peer Networking pp Cite as. This chapter provides an overview of structured Peer-to-Peer overlay algorithms. Based on these key concepts, a number of key overlay algorithms are classified into categories and a brief over-view of these algorithms is presented. Unable to display preview. Download preview PDF.
A survey and comparison of peer-to-peer overlay network schemes
Effectiveness of unstructured P2P overlays highly depends on the efficiency and scalability of their lookup algorithms. However, how to quickly discover or lookup an object or a file that a peer is looking for in a large scale P2P network with efficiency remains a challenging research problem. In this paper we dynamically select peers with high priority of having objects while reducing the overall network traffic. Our experiments have demonstrated that our method can significantly shorten the search path and result in a higher peer search performance. We achieved a success rate of 85 percentage in locating a file when the number of peers are large in the topology with a reduction of 40 percentage of search traffic.
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Peer-to-peer overlay systems go beyond services offered by client-server systems by having symmetry in roles where a client may also be a server. It allows.
Distributed hash table
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Сьюзан нахмурилась. Она понимала, что найти принадлежащую Хейлу копию ключа будет очень трудно. Найти ее на одном из жестких дисков - все равно что отыскать носок в спальне размером со штат Техас.