| Abstract |
|
We investigate how to improve Web cluster performance
through cooperation protocols for a shared use of the main
memories of the server nodes (global caching). Many popular
schemes to locate requested documents are based upon
locality information sharing (namely, Informed cooperation);
we also propose a novel approach for document
lookup through a query broadcasting mechanism (namely,
On-demand cooperation). Moreover, we consider the Migration
and the Handoff mechanisms to retrieve successfully
located documents. The experimental results show
that, in a static Web scenario, the On-demand with Hand-off
scheme performs similarly to the Informed with Hand-off
scheme, whereas the On-demand with Migration scheme
outperforms the Informed with Migration scheme. On the
other hand, in a scenario with some dynamic requests, the
On-demand cooperation experiences a significant performance
degradation with respect to the Informed cooperation.
|
 Additional Information
|
Citation:
M. E. Poleggi, B. Ciciani, M. Colajanni,
"Global Caching Mechanisms in Clusters of Web Servers,"
mascots,
p. 0421,
10th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems (MASCOTS'02),
2002
|
