By Reaz Ahmed, Raouf Boutaba
This short provides a peer-to-peer (P2P) web-hosting infrastructure (named pWeb) that may rework networked, home-entertainment units into light-weight participating net servers for again and again storing and serving multimedia and websites. the problems addressed comprise making sure content material availability, Plexus routing and indexing, naming schemes, net identification, collaborative net seek, community structure and content material indexing. In pWeb, user-generated voluminous multimedia content material is proactively uploaded to a close-by community position (preferably in the similar LAN or a minimum of, in the related ISP) and a established P2P mechanism guarantees net accessibility via monitoring the unique content material and its replicas. This new paradigm of data administration strives to supply low or no-cost cloud garage and entices the top clients to add voluminous multimedia content material to the cloud info facilities. in spite of the fact that, it results in problems in privateness, community structure and content material availability. Concise and sensible, this short examines the advantages and pitfalls of the pWeb web-hosting infrastructure. it truly is designed for execs and practitioners engaged on P2P and net administration and can also be an invaluable source for advanced-level scholars learning networks or multimedia.
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Extra info for Collaborative Web Hosting: Challenges and Research Directions (Springer Briefs in Computer Science)
Enabling flexible queries with guarantees in P2P systems. IEEE Internet Computing, 8(3):19–26, June 2004. 26. I. Stoica, R. Morris, D. Liben-Nowell, D. R. Karger, M. F. Kaashoek, F. Dabek, and H. Balakrishnan. Chord: a scalable Peer-to-Peer lookup protocol for Internet applications. IEEE/ACM TON, 11(1):17–32, 2003. 27. C. Tang and S. Dwarkadas. Hybrid global-local indexing for efficient Peer-to-Peer information retrieval. In Proc. of the Symposium on Networked Systems Design and Implementation (NSDI), June 2004.
DEWS extends the original Plexus protocol in the two ways: (a) route aggregation (b) incremental retrieval. These extensions are explain in the following. 1 Route Aggregation The aggregate query rate in DEWS is very high. Hence, the number of query message and the associated communication overhead will be very high if these queries are routed one at a time. Instead, DEWS proposes to aggregate multiple queries in same message. This aggregation approach can significantly reduce the number of network messages.
In a replication group with β -availability, it is ensured that at least β members from that group will be online at any given time. Each member within a group replicates each others contents, and works as a proxy for the off-line members of that group. Group index overlay: It has two functions. First, during group formation, it works as a distributed agent for match-making peers with complementary uptime behavior. Second, it acts as an indirection structure during content lookup. Initially each peer advertises its availability pattern as a bit-vector to this overlay.