This paper describes Intelligent Fault-tolerant Web Caching Service(IFCS) using an application level composition mechanism called Generic Modeling Environment (GME) on an Application Level Active Network (ALAN). Web caching on an ALAN requires the application level composition mechanism and a service composition to support adaptability for self-organization. ALAN was developed to solve the problems of the network level Active Network(AN). ALAN has the features of both AN as well as mobile agents. The efficient composition mechanism for the existing AN projects has been supported primarily for the network level AN. Conversely, ALAN lacks support for the application level AN. The existing web caching technology is inter-connected in a manually configured hierarchical tree. Since a self-organization system is intended to be adaptive, web caching for self-organization does not involve a manual configuration or any low-level tuning of the individual nodes of the entire system. However, it requires service composition to support adapting intelligence and fault-tolerance that enables self-organization.
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