Accessing a global cache by using a Mapping node

You can use a Mapping node to interact with a map in an embedded cache or external WebSphere® eXtreme Scale grid.

Before you begin

Read the concept information in Data caching overview.
Ensure that the embedded cache or external grid is available. The embedded cache is disabled by default. To use the cache, select an integration node level cache policy; see Configuring the embedded global cache.
If you are connecting to an external grid, create a configurable service to define how the connection is made. For more information, see mqsicreateconfigurableservice command.

You can use a Cache Put transform in a Mapping node to store data in the global cache; see Adding key-value pairs to the global cache by using a Mapping node.

You can use a Cache Get transform in a Mapping node to retrieve data from the cache for processing or routing; see Retrieving a value from the global cache by using a Mapping node.

You can use a Cache Remove transform in a Mapping node to remove a key-value pair from the cache; see Removing a key-value pair from the global cache by using a Mapping node.

If you want to handle any exceptions that are returned by the Cache transform, you can add a Cache Failure transform to the Cache transform group; see Handling global cache exceptions in a graphical data map.