Download Advanced Computing, Networking and Security: International by Abhishek Parakh, Subhash Kak (auth.), P. Santhi Thilagam, PDF

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By Abhishek Parakh, Subhash Kak (auth.), P. Santhi Thilagam, Alwyn Roshan Pais, K. Chandrasekaran, N. Balakrishnan (eds.)

This ebook constitutes revised chosen papers from the foreign convention on complicated Computing, Networking and safeguard, ADCONS 2011, held in Surathkal, India, in December 2011. The seventy three papers incorporated during this booklet have been conscientiously reviewed and chosen from 289 submissions. The papers are geared up in topical sections on disbursed computing, photo processing, trend attractiveness, utilized algorithms, instant networking, sensor networks, community infrastructure, cryptography, internet protection, and alertness security.

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A proper allocation of replicas increases the chance of shortening the distance between a service provider and its consumer, thereby may reduce the response time of the service. An extensive use of replicas allows simultaneous processing of requests, which may also influence response time and scalability. In view of potential benefits the reasons for replication are unquestionable, and therefore prompted us to propose a new approach to replication of RESTful web services. However, replication raises a couple of problems concerning replica management: creation, identification, location, and last but not least consistency.

The replication mechanism we propose in this paper generally does not require any special assistance from the service being replicated. g. uses GET method for updating resources). However, the lack of any support may lead to some inefficiency, or may limit possible replication strategies. For example: it is not possible to optimistically replicate services that do not assist in solving conflicts between concurrently executed operations, while still guaranteeing eventual consistency. In this case only pessimistic replication is applicable.

3 Proposed Work The main aim of the work is to reduce the latency involved in the file access by introducing the concept of file pre-fetching. This is achieved by using a correlation detection module that can be used to establish the relationship between the files and a pre-fetching module that exploits the correlation module to pre-fetch the files. 1 involves • Name Node which serves as the master for the cloud system to which all the requests from the client are directed. It has the meta-data about the files.

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