A Component Assignment Framework for Improved Capacity and Assured Performance in Web Portals

Abstract. Web portals hosting large-scale internet applications have become popular due to the variety of services they provide to their users. These portals are developed using component technologies. Important design challenges for developers of web portals involve (1) determining the component placement that maximizes the number of users/requests (capacity) without increasing hardware resources and (2) maintaining the performance within certain bounds given by service level agreements (SLAs). The multitude of behavioral patterns presented by users makes it hard to identify the incoming workloads. This paper makes three contributions to the design and evaluation of web portals that address these design challenges. First it introduces an algorithmic framework that combines bin-packing and modeling-based queuing theory to place components onto hardware nodes. This capability is realized by the Component Assignment Framework for multi-tiered internet applications (CAFe). Second, it deve...

• Type: Conference
• Year: 2009
• Where: OTM
• Authors: Nilabja Roy, Yuan Xue, Aniruddha S. Gokhale, Larry W. Dowdy, Douglas C. Schmidt
• Keywords: Design Challenges, Hardware Resources, Internet Technology, OTM 2009, Web Portal