Lawrence Kaye is the Manager of Delivery Strategy in BEA Educational Services. He has five years of Java development experience and has taught WLS development and administration courses for the past two years. Lawrence can be reached at lawrence.kaye@bea.com.
This is the second in a series of three articles discussing the clustering
capabilities of BEA WebLogic Server 6.1 (WLS). This month we discuss
replica-aware stubs, their impact on a clustered system, and how they're used
with EJBs.
How WebLogic Can Instrument EJBs
WebLogic can provide clustering logic for an EJB in four possible locations
(see Figure 1):
The JNDI naming server, where the home stub is bound The container The home
stub The remote stub
The home stub and the remote stub are the most interesting aspects, since
both of these objects are downloaded by a Java client and run within the JVM
affiliated with the client, not the application server.
WebLogic can develop load balancing and failover algorithms for EJBs not even
resident in their own server! Given all o... (more)
Welcome to the first issue of BEA WebLogic Developer's Journal! This article
is the first of a three-part series geared around the clustering capabilities
of BEA WebLogic Server (WLS) 6.1 and aimed at introductory and advanced
audiences. This article will talk about the importance of clustering and the
high-level clustering capabilities of WLS, provide an in-depth analysis of
HttpSession... (more)
Lawrence Kaye is the Manager of Delivery Strategy in BEA Educational Services. He has five years of Java development experience and has taught WLS development and administration courses for the past two years. Lawrence can be reached at lawrence.kaye@bea.com.
Vincent Kadar
Jill Starr
Christophe Dufourmantelle
Hovhannes Avoyan
Josh Powell
Pawel Plaszczak
Bob Little
Shai Quest
Bob Snyder
