76 SEPTEMBER • OCTOBER 2002 http://computer.org/internet/ 1089-7801/02/$17.00 ©2002 IEEE IEEE INTERNET COMPUTING H igh-volume Web sites often use clusters of servers to support their architectures. A load balancer in front of such clusters directs requests to the various servers in a way that equalizes, as much as possible, the load placed on each. There are two basic approaches to scaling Web ...

Caching dynamic content can bring many benefits to the performance and scalability of Web application servers. However, such mechanisms are usually tightly coupled to individual application servers (or even applications) that prevent caching at more advantageous points. In this paper we propose an approach to enable dynamic content caching at enhanced Web proxies which requires only simple modi...

An approach for Web-based Mathematics Education (WME) is presented. WME aims to establish a framework to support authoring of dynamic and interactive mathematics education pages, end-user access through regular Web browsers, and interoperable back-end WME servers. The WME architecture builds on emerging Web standards, and defines an XML-based authoring language, the Mathematical Education Marku...

In this exploratory research we study the computational abilities of servers in the Linked Data network through agents that cooperatively evaluate tasks via delegation. We show the feasibility of developing lightweight systems of agents over the current Web infrastructure. We design a simple delegation language, develop a lightweight software (agent) to be installed over Web servers, and implem...

During the past two years, the volume of traffic on the World Wide Web (Web) has grown dramatically. Traffic increases are due largely to the proliferation of inexpensive and ubiquitous Web browsers (such as NCSA Mosaic, Netscape Navigator, and Internet Explorer). Likewise, Web protocols and browsers are increasingly being applied to specialized computationally expensive tasks, such as imaging ...

In August 1998, an interviewer for an Indonesian news weekly asked Amien Rais, a major figure in national Islamic politics and founder of the National Mandate Party (Partai Amanat Nasional), why he had altered the name of the party from the originally proposed Partai Amanat Bangsa. He replied, “We chose Partai Amanat Nasional because it would be better translated into English as National Mandat...

This paper presents the design of a new Web server architecture called the asymmetric multi-process eventdriven (AMPED) architecture, and evaluates the performance of an implementation of this architecture, the Flash Web server. The Flash Web server combines the high performance of single-process event-driven servers on cached workloads with the performance of multiprocess and multi-threaded se...

Web applications have emerged as the primary means of access to vital and sensitive services such as online payment systems and databases storing personally identifiable information. Unfortunately, the need for ubiquitous and often anonymous access exposes web servers to adversaries. Indeed, network-borne zero-day attacks pose a critical and widespread threat to web servers that cannot be mitig...

Web applications depend on many different infrastructure components such as Web Servers, Firewalls, or Application Servers. Furthermore these applications are accessed from different browser platforms on different hardware. Changing the infrastructure components affects the Web application architecture itself. Maintainable Web applications require a well-established practice to divide an applic...

This paper presents the latest status of Thai web servers. Quantitative measurements are based on database crawling on July 2000. Our experiment shows that the Heaps’ and Zipf's laws apply strongly to documents on the Thai web. A visualization tool is developed to show servers connectivity.