A web caching and prefetching simulator

Marquez, J.; Domènech, Josep; Gil, José A.; Pont, Ana

doi:10.1109/softcom.2008.4669508

Cited by 10 publications

(4 citation statements)

References 8 publications

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“…Nayyar [20] has proposed a Cross-Layer System for cluster based data access(CBDA) scheme in mobile ad-hoc networks. This new crosslayer technique is introduced to increase the performance of hybrid cooperative caching and prefetching(HCCP) schemes [21,22]. For future research there is a necessity to introduce an efficient prefetching technique which can further improve the data accessibility time and reduce query request delay to make cooperative caching scheme better.…”

Section: Related Work J Chandrashekar and A Manoharanmentioning

confidence: 99%

Global Cooperative Image Prefetching and GSA in Mobile Ad Hoc Networks

Nagendrappa¹,

Nanjundaiah²,

Gowda³

2019

IJIES

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Prefetching the data is a popular technique that improves data accessibility in wired or wireless networks. In mobile ad hoc networks(MANET), the possibility to improve the access latency and cache hit ratio may reduce due to the mobility of nodes and only limited cache space available in mobile hosts (MHs). To eliminate this problem in wireless networks, Global Cooperative Caching(GCC) with Image Prefetching (IP) algorithm is proposed that prefetches the image based on similarity measurement between data items and integrated with Gateway Selection Algorithm (GSA) for increasing throughput and reducing delay in the networks. Design implementation and analysis are done using Network Simulator 2(NS2) and MATLAB tool used to calculate the performance parameters of the proposed algorithm and also the parameters are compared with GCCIP to prove that proposed GCCIP-GSA algorithm have greatly improved the system performance in terms of packet loss, delay, throughput and resource utilization compared to existing schemes. Throughput analysis shows that GSA GCCIP results 13.63% higher throughput and 31.25% reduction in latency than conventional GCCIP. The Mean Square Error(MSE) and Peak Signal to Noise Ratio (PSNR) has been evaluated for different kind of images such as cameraman, lena, and baboon. In Proposed GCCIP-GSA, 28.8%, 23.75%, and 18.66% of MSE has been reduced compared to GCCIP for three different images respectively. At that same time, 60%, 55.6%, and 50% of PNSR has been improved in proposed method than conventional method.

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Section: Related Work J Chandrashekar and A Manoharanmentioning

confidence: 99%

Global Cooperative Image Prefetching and GSA in Mobile Ad Hoc Networks

Nagendrappa¹,

Nanjundaiah²,

Gowda³

2019

IJIES

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“…Marquez et al (2008) a windows-based simulator for caching and prefetching has been presented. The proposed tool takes Squid traces as inputs and simulates the functionality of different web caching policies.…”

Section: Related Workmentioning

confidence: 99%

Windows Web Proxy Caching Simulation: A Tool for Simulating Web Proxy Caching Under Windows Operating Systems

Yasin¹

2014

Journal of Computer Science

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Web caching plays a key role in improving the performance of the web by reducing the latency of delivering web objects to the users. On the other hand, a simulation tool plays a key role in studying the behavior of any network such as studying the effects of web caching on the performance of the network. The aim of this work is to present a tool for simulating a web proxy caching for windows operating systems since there is no existing well-compatible simulation tool for windows operating systems that can simulate Hit Ratio (HR) and Byte Hit Ratio (BHR) for traditional caching policies. The proposed simulation tool is called Windows Web Proxy Caching Simulation (WWPCS). The results show the performance of traditional web caching policies for different cache's sizes. Moreover, in order to show the efficiency of WWPCS, the results of running WWPCS are compared to the results of running a Unix-based tool.

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“…If requested data is unavailable in the local cache, each client first searches the data in it's zone before forwarding the request to the next client that lies along the routing path towards the data center/server. In [27], [28] prefetching combined with caching has been suggested to improve web performance by hiding download latency.…”

Section: Related Workmentioning

confidence: 99%

Efficient flooding using prefetching in on-demand routing protocols for mobile ad-hoc networks

Shobha

Shetty

Rajanikanth

2011

2011 17th IEEE International Conference on Networks

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In this paper, we propose an enhancement technique for dynamic source routing protocol (DSR) using prefetching of frequently used routes in the cache. DSR is a popular on-demand reactive routing protocol in mobile ad-hoc networks (MANETs) which uses flooding for route discovery and route maintenance only when a node has data that needs to be transmitted. Flooding causes serious redundancy, contention and collision in the network which increases the overhead of transmission in a dynamic network where the nodes have different mobilities. Most of the research work on prefetching has focused on using this technique for improving data access in clustered networks; but this involves a lot of overhead in maintaining the clusters. Hence we have considered a non-cluster based network with random movement of nodes for our analysis. Our principal aim is to reduce the amount of flooding of the route-request (RREQ) packets in the network so that the overhead can be reduced. In order to achieve this we propose a prefetching algorithm which involves two steps. First, we timestamp each and every route cached in a node's route-cache table based on the mobility of the nodes. Second, we initiate prefetching of only the frequently used entries from route-cache table when their respective timestamps are on the verge of expiring. Simulations carried out on DSR have shown that this technique can reduce redundant flooding to a great extent, thus making DSR more efficient.

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A web caching and prefetching simulator

Cited by 10 publications

References 8 publications

Global Cooperative Image Prefetching and GSA in Mobile Ad Hoc Networks

Global Cooperative Image Prefetching and GSA in Mobile Ad Hoc Networks

Windows Web Proxy Caching Simulation: A Tool for Simulating Web Proxy Caching Under Windows Operating Systems

Efficient flooding using prefetching in on-demand routing protocols for mobile ad-hoc networks

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