A Secure Distributed Cache Invalidation Method for Maintaining Cache Consistency in MANETS

This paper proposes a secure distributed cache invalidation mechanism (DCIM), simply known as a client-based cache consistency scheme. The goal of secure DCIM is to improve the efficiency of the cache updating process in a network of mobile devices (MANETs). In which cached data retrieved from a data server, without requiring the latter to maintain the status information about the caches. In this paper the COACS plays a vital role in the form of caching the queries and addresses of the nodes that stores the responses to these queries. It introduces the Secure DCIM that is totally client-based when compared to the others like SSUM and SACCS. Based on the pull-based algorithm, the secure DCIM achieves the strong consistency with the help of the implementation of the adaptive time-to-live (TTL), piggybacking, and prefetching In a secure DCIM, The Centralized server will maintain the database records and files. Cache node will pull the data items from the server and also the data items can be upload by the user. After the request was sent by the cache node (CN), the server receive the request and the response is sent by the server with the TTL value and its hit rate. The server autonomously sends the data updates to the CNs, meaning that it has to keep the track of which CNs caches the corresponding data items. The consistency ratio, delay, and overhead traffic are reported versus several variables, where the secure DCIM showed to be superior when compared to the other systems.