Network Deployment (Distributed operating systems), v8.0 > End-to-end paths > Dynamic caching > Improve service with the dynamic cache service

Task overview: Using the dynamic cache service to improve performance


Cache the output of servlets, commands, and JSP improves application performance. WAS consolidates several caching activities including servlets, web services, and WebSphere commands into one service called the dynamic cache. These caching activities work together to improve application performance, and share many configuration parameters that are set in the dynamic cache service of an application server. We can use the dynamic cache to improve the performance of servlet and JSP files by serving requests from an in-memory cache. Cache entries contain servlet output, the results of a servlet after it runs, and metadata. The dynamic cache service works within an application server JVM, intercepting calls to cacheable objects. For example, it intercepts calls through a servlet service method or a command execute method, and either stores the output of the object to the cache or serves the content of the object from the dynamic cache.


  1. The dynamic cache service is enabled by default. We can configure the default cache instance in the administrative console. Refer to the Using the dynamic cache service topic for more information.

  2. Configure the type of caching that you are using:

    • Configure servlet caching.

    • Configure portlet fragment caching.

    • Configure Edge Side Include caching.

    • Configure command caching.
    • Example: Caching web services.

    • Configure the JAX-RPC web services client cache.

  3. Monitor the results of the configuration using the dynamic cache monitor

What to do next

To use the DistributedMap and DistributedObjectCache interfaces for the dynamic cache, refer to the Using the DistributedMap and DistributedObjectCache interfaces for the dynamic cache topic.


Disk cache infrastructure enhancements
Use the dynamic cache service
Configure cache replication
Configure cacheable objects with the cachespec.xml file
Configure command caching
Eviction policies using the disk cache garbage collector
Example: Caching web services
Configure the JAX-RPC web services client cache
Display cache information
Use the DistributedMap and DistributedObjectCache interfaces for the dynamic cache
Use servlet cache instances
Disable template-based invalidations during JSP reloads
Dynamic cache MBean statistics
Example: Configuring the dynamic cache service
Dynamic cache PMI counter definitions
Troubleshoot the dynamic cache service Tune the application serving environment
Configure servlet caching
Configure portlet fragment caching
Configure Edge Side Include caching


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