Described herein are methods and apparatus, including computer program products, that implement a centralized cache storage for runtime systems. A computer program product can include instructions operable to receive a request at a centralized shared cache framework to store an entity; cache the entity in a shared memory in response to the request, where the shared memory is operable to store the entity such that the entity is accessible to runtime systems, and caching the entity in the shared memory comprises storing the entity for one of the runtime systems; receive a request at the centralized shared cache framework to retrieve the entity from the shared memory; and if the entity is stored in the shared memory, retrieve the stored entity from the shared memory, where the centralized shared cache framework is operable to retrieve the entity for any of the runtime systems.
A system and method to monitor application servers using shared monitoring memory. An application server includes worker nodes having Java virtual machines to process work requests received by the application server. Status information is generated for each of the worker nodes while processing the work requests. The status information for each of the worker nodes is then stored into the shared monitoring memory while the worker nodes operate.
A system and method to monitor caches of at least one Java virtual machine ("JVM"). A program is operated on the at least one JVM. Objects associated with the program are cached within a local cache of the JVM. Cache status information about the local cache is generated and then the cache status information is reported into memory external to the JVM to enable monitoring of the local cache from external to the JVM.
A system and method to monitor client sessions within a Java virtual machine. Client sessions are established within an application server instance to store session context data for each of the client sessions during the client sessions. At least two Java virtual machines are operated within the application server instance to service client requests received from clients associated with each of the client sessions. Status information about each of the client sessions is reported into shared memory external to the Java virtual machines to monitor each of the client sessions during operation of the Java virtual machines.
A system and method to monitor a virtual machine VM. The VM executes one or more applications. During executing of the one or more applications, local objects are created and stored within an internal heap maintained by the VM. Status data of the internal heap is published to monitoring memory external to the VM.
