Abstract
In this paper, a dynamic content caching framework is proposed for deploying directory based applications at the edge of the network, closer to the client. The framework consists of a Lightweight Directory Access Protocol (LDAP) directory cache and the offloaded application running at a proxy. The LDAP directory cache is an enhanced LDAP proxy server which stores results and semantic information for search requests (queries) and answers incoming queries which are semantically contained in them. A simplified query containment approach based on the concept of LDAP templates is proposed. Caching algorithms have been proposed which take advantage of referential locality in the access pattern. A generic framework is used to offload the application at the edge and to support prefetching of LDAP queries based on application logic. A real enterprise directory application and real workloads are used to evaluate performance of the caching algorithms. The LDAP directory cache architecture, along with the proposed algorithms can be used to improve performance and scalability of directory based servicesKeywordsConjunctive Normal FormCache SizeCache ReplacementDynamic ContentProxy CacheThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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