WWW2009 EPrints

MASTH Proxy: An Extensible Platform for Web Overload Control

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Many overload control mechanisms for Web based applications aim to prevent overload by setting limits on factors such as admitted load, number of server threads, buffer size. For this they need online measurements of metrics such as response time, throughput, and resource utilization. This requires instrumentation of the server by modifying server code, which may not be feasible or desirable. An alternate approach is to use a proxy between the clients and servers. We have developed a proxy-based overload control platform called MASTH Proxy –Multi-class Admissioncontrolled Self-Tuning Http Proxy. It records detailed measurements, supports multiple request classes, manages queues of HTTP requests, provides tunable parameters and enables easy implementation of dynamic overload control. This gives designers of overload control schemes a platform where they can concentrate on developing the core control logic, without the need to modify upstream server code.

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This website has been set up for WWW2009 by Christopher Gutteridge of the University of Southampton, using our EPrints software.


We (Southampton EPrints Project) intend to preserve the files and HTML pages of this site for many years, however we will turn it into flat files for long term preservation. This means that at some point in the months after the conference the search, metadata-export, JSON interface, OAI etc. will be disabled as we "fossilize" the site. Please plan accordingly. Feel free to ask nicely for us to keep the dynamic site online longer if there's a rally good (or cool) use for it... [this has now happened, this site is now static]