"A cluster is a group of computers that have been interconnected to share processing. Clustering technology, which coordinates the computers as they work in parallel on computing tasks, comes in a variety of flavors. Clusters can be built from custom hardware and software that implement a fast interconnect and some kind of shared memory or cache. Clustering technology can also be completely implemented in software, making use of the power and low prices of today's PCs, inexpensive high-speed networking like Fast Ethernet, and a robust open operating system like Linux. ..."

"In this article, I describe the Java Application Server Pseudo-cluster (JASPer), a simple cluster built with commodity hardware and free software from the Apache Foundation. The master server runs the Apache HTTP daemon and the cluster nodes are running the Apache JServ Java application server. Using this combination of open software and inexpensive equipment, my team has been able to reap the benefits of clustering while avoiding some of the disadvantages."

Complete Story

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