An Extensible, Lightweight Architecture for Adaptive J2EE Applications

Conference · Wed Nov 01 04:00:00 EST 2006

OSTI ID:901187

Gorton, Ian; Liu, Yan; Trivedi, Nihar

Server applications with adaptive behaviors can adapt their functionality in response to environmental changes, and significantly reduce the on-going costs of system deployment and administration. However, developing adaptive server applications is challenging due to the complexity of server technologies and highly dynamic application environments. This paper presents an architecture framework, known as the Adaptive Server Framework (ASF). ASF provides a clear separation between the implementation of adaptive behaviors and the server application business logic. This means a server application can be cost effectively extended with programmable adaptive features through the definition and implementation of control components defined in ASF. Further-more, ASF is a lightweight architecture in that it incurs low CPU overhead and memory usage. We demonstrate the effectiveness of ASF through a case study, in which a server application dynamically determines the resolution and quality to scale an image based on the load of the server and network connection speed. The experimental evaluation demonstrates the performance gains possible by adaptive behaviors and the low overhead introduced by ASF.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 901187
• Report Number(s): PNNL-SA-52123
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
A CODES
COMPUTER ARCHITECTURE
COMPUTER NETWORKS
EVALUATION
IMPLEMENTATION
J2EE
PERFORMANCE
RESOLUTION
adaptive server systems
middleware