Abstract:

We propose a hierarchical availability analysis methodology for multi-tiered Web applications. The methodology partitions the analysis into three levels, namely, server, request and session, and considers only the relevant factors at each level. The levels are connected using a hierarchical approach; the results obtained from one level are propagated for use in the analysis at the next one. The methodology thus decouples the different factors that influence availability and yet provides an integrated framework to consider them simultaneously.
Received on May 8, 2007
References: 07