With increasing bandwidth available to the client and the number of users growing at an exponential rate the Web server can become a performance bottleneck. This paper considers the parallelization of requests to Web pages each of which is composed of a number of embedded objects. The performance of systems in which the embedded objects are distributed across multiple backend servers are analyzed. Parallelization of Web requests gives rise to a significant improvement in performance. Replication of servers is observed to be beneficial especially when the embedded objects in a Web page are not evenly distributed across servers. Load balancing policies used by the dispatcher of Web page requests are investigated. A simple round robin policy for backend server selection gives a better performance compared to the default random policy used by the Apache server.

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Keywords Bandwidth, Image databases, Network servers, Performance analysis, Round robin, System performance, Systems engineering and theory, Web pages, Web server, Web sites
Persistent URL dx.doi.org/10.1109/ICPP.2000.876130
Conference International Conference on Parallel Processing, ICPP 2000
Nadimpalli, S., & Majumdar, S. (2000). Techniques for achieving high performance Web servers. Presented at the International Conference on Parallel Processing, ICPP 2000. doi:10.1109/ICPP.2000.876130