Web Content Adaptation to Improve Server Overload Behavior

This paper presents a study of web content adaptation to improve server overload performance, as well as an implementation of a web content adaptation software prototype. When the request rate on a web server increases beyond server capacity, the server becomes overloaded and unresponsive. The TCP listen queue of the server's socket over ows exhibiting a drop-tail behavior. As a result, clients experience service outages. Since clients typically issue multiple requests over the duration of a session with the server, and since requests are dropped indiscriminately, all clients connecting to the server at overload are likely to experience connection failures, even though there may be enough capacity on the server to deliver all responses properly for a subset of clients. In this paper, we propose to resolve the overload problem by adapting delivered content to load conditions to alleviate overload. The premise is that successful delivery of a less resource intensive content under o...

• Type: Journal
• Year: 1999
• Where: CN
• Authors: Tarek F. Abdelzaher, Nina T. Bhatti
• Keywords: CN 1999, Content Adaptation, Content Adaptation Software, Web Content Adaptation