A class-based scheme for E-commerce web servers: Formal specification and performance evaluation

Authors:
D. R. W. Holton;I. Nafea;M. Younas;I. Awan
Affiliations:
Department of Computing, The University of Bradford, Bradford BD7 1DP, UK;Department of Computing, The University of Bradford, Bradford BD7 1DP, UK;Department of Computing, Oxford Brookes University, Oxford OX33 1HX, UK;Department of Computing, The University of Bradford, Bradford BD7 1DP, UK
Venue:
Journal of Network and Computer Applications
Year:
2009

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Abstract

This paper is an investigation into the performance of E-commerce applications. E-commerce has become one of the most popular applications of the web as a large population of web users is now benefiting from various on-line services including product searches, product purchases and product comparison. E-commerce provides users with 24-7 shopping facilities. However, the consequence of these benefits and facilities is the excessive load on E-commerce web servers and the performance degradation of E-commerce (eCom) requests they process. This paper addresses this issue and proposes a class-based priority scheme which classifies eCom requests into high and low priority requests. In E-commerce, some requests (e.g. payment) are generally considered more important than others (e.g. search or browse). We believe that by assigning class-based priorities at multiple service levels, E-commerce web servers can perform better and can improve the performance of high priority eCom requests. In this paper, we formally specify and implement the proposed scheme and evaluate its performance using multiple servers. Experimental results demonstrate that the proposed scheme significantly improves the performance of high priority eCom requests.