Distributed Computing with The BEA WebLogic Server

Java 2 Enterprise Edition (J2EE)

The Application Server platform for Java

• Java Servlets / Java Server Pages (JSP)
• Enterprise Java Beans (EJB)

–Stateless Session, Stateful Session, Entity

• Java Messaging Service (JMS)
• Remote Method Invocation (RMI)
• Java Database Connection (JDBC)
• Java Connector Architecture (JCA)
• Java Naming & Directory Interface (JNDI)
• Java Transaction API (JTA)

The BEA WebLogic Server

• All Java, clean-room implementation of the J2EE
• Shipping basic APIs since 1996
• Most widely-used Application Server on the market
• Won every major industry award
• Associated BEA product: TUXEDO

–Distributed TP Monitor

–Originally developed at Bell Labs in 1984

–Widely used for 24×7 OLTP applications

–WLS and TUXEDO teams have been combined

WebLogic Clusters

A WebLogic cluster is a collection of servers that coordinate their actions to provide scalable and highly-available services
Scalable services
Add or remove servers as needed
Load balance requests
Concentrate communication
Highly-available services
No single point of failure
Failover requests