Performance and Reliability
The Adobe JRun 4 legacy-free and small-footprint architecture is optimized for performance. Since its introduction in 1997, JRun is recognized as the fastest web container in the application server market.
The JRun 4 instrumentation feature allows you to identify and resolve performance bottlenecks in your code by tracing and timing each method invocation in your application. Instrumentation is supported for JSPs, servlets, and EJBs.
New JINI-Based Enterprise-Class Clustering
JRun 4 provides enterprise-class server clustering, allowing load balancing and automatic fail-over at all levels. In-memory session replication ensures that state information is preserved. An object's state is also replicated in an optimized manner, to provide the highest level of reliability while maintaining performance.