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DotSlash: A Scalable and Efficient Rescue System for Handling Web Hotspots

Weibin Zhao; Henning G. Schulzrinne

Title:
DotSlash: A Scalable and Efficient Rescue System for Handling Web Hotspots
Author(s):
Zhao, Weibin
Schulzrinne, Henning G.
Date:
Type:
Technical reports
Department:
Computer Science
Permanent URL:
Series:
Columbia University Computer Science Technical Reports
Part Number:
CUCS-007-04
Publisher:
Department of Computer Science, Columbia University
Publisher Location:
New York
Abstract:
This paper describes DotSlash, a scalable and efficient rescue system for handling web hotspots. DotSlash allows different web sites to form a mutual-aid community, and use spare capacity in the community to relieve web hotspots experienced by any individual site. As a rescue system, DotSlash intervenes when a web site becomes heavily loaded, and is phased out once the workload returns to normal. It aims to complement existing web server infrastructure such as CDNs to handle short-term load spikes effectively, but is not intended to support a request load constantly higher than a web site's planned capacity. DotSlash is scalable, cost-effective, easy to use, self-configuring, and transparent to clients. It targets small web sites, although large web site can also benefit from it. We have implemented a prototype of DotSlash on top of Apache. Experiments show that DotSlash can provide an order of magnitude improvement for a web server in terms of the request rate supported and the data rate delivered to clients even if only HTTP redirect is used. Parts of this work may be applicable to other services such as the Grid computational services and media streaming.
Subject(s):
Computer science
Item views:
203
Metadata:
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