Proxy-based Dissemination of Dynamic Web Data

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Emerging web applications are increasingly likely to use dynamic webdata. Traditionally, requests for dynamic data---both time-varying anddynamically-generated---have been handled directly by servers andintermediate proxies haven't been allowed to process requests for suchobjects (web proxies have been primarily employed to disseminate datathat is mostly static). A pure server-based approach for managingdynamic data is likely to limit the scalability of emerging webapplications and increase their vulnerability to server failures. Toovercome this drawback, novel proxy-based techniques will be developedto manage and disseminate dynamic web data. The proposedresearch will address two key issues: (i) data dissemination, whichaddresses the issue of disseminating time-varying web data usingproxy-based push and pull techniques, and (ii) computationdissemination, which addresses the issue of moving computations fromservers to proxies so as to dynamically generate web objects at aproxy. Both techniques have the potential of radically changing theway web proxies are designed and used. These techniques will need tosatisfy three key requirements: user-cognizance (i.e., awarenessof user and application requirements), intelligence (i.e., the abilityto dynamically choose the most efficient set of mechanisms to serviceeach application), and adaptivity (i.e., the ability to react tochanging load characteristics). The proposed techniques will beevaluated using an eclectic mix of simulation, analysis and prototypeimplementation.