Mission-critical Web-based applications customer self-service,
distribution channel and supply chain management, online trading and banking
must be deployed on a cluster of servers in order to provide scalability
and high availability. Scalability means that servers can be dynamically
added or removed as needed to meet user demand, and that the overall load of
requests is distributed among the servers so that resources remain fully
utilized. High availability means that there is no "single point of failure"
in either the system or the application, and that requests automatically
failover from nonworking components to working components. Ideally,
clustering should be transparent to applications: externally, the cluster
should present a "single-system image." In addition to simplifying the task
of application development, this allows off-the-shelf components to be... (more)
Mission-critical Web-based applications customer self-service,
distribution channel and supply chain management, online trading and banking
must be deployed on a cluster of servers in order to provide scalability
and high availability. Scalability means that servers can be dynamically
added or removed as needed to meet user demand, and that the overall load of
requests is distributed among the servers so that resources remain fully
utilized. High availability means that there is no "single point of failure"
in either the system or the application, and that requests automatica... (more)
Dean Jacobs is an architect at WebXpress, a BEA company, where he is responsible for the WebLogic Server core and WebLogic clusters. He received his Ph.D. in computer science from Cornell University in 1985.
Scott Sellers
Anthony Franco
Daniel Morris
Wayne Walls
Niki Acosta
Jereme Hancock
Oren Michels
Marvin Wheeler
Douglas Kim
