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Overlay networks are used today in a variety of distributed systems ranging from file-sharing and storage systems to communication infrastructures. However, designing, building and adapting these overlays to the intended application and the target environment is a difficult and time consuming process.
To ease the development and the deployment of such overlay networks we have implemented P2, a system that uses a declarative logic language to express overlay networks in a highly compact and reusable form. P2 can express a Naradastyle mesh network in 16 rules, and the Chord structured overlay in only 47 rules. P2 directly parses and executes such specifications using a dataflow architecture to construct and maintain overlay networks. We describe the P2 approach, how our implementation works, and show by experiment its promising trade-off point between specification complexity and performance.
declarative overlays, dataflow engines, executable pseudocode
Loo, Boon Thau; Condie, Tyson; Hellerstein, Joseph M.; Maniatis, Petros; Roscoe, Timothy; and Stoica, Ion, "Implementing Declarative Overlays" (2005). Departmental Papers (CIS). Paper 302.
Date Posted: 01 March 2007