$Cache.Session

Usage

Use {!$Cache.Session} to reference an existing session cache. A session cache consists of cached data that can be reused from one session to the next. Use dot notation to specify the namespace, partition name, or properties of a cached value.

Examples

This output text component retrieves a cached value from the myPartition partition and myNamespace namespace with the key output.

<apex:outputText value="{!$Cache.Session.myNamespace.myPartition.output}"/>

If the cached value is a data structure that has properties or methods, like an Apex list or a custom class, you can access the properties with$Cache.Session by using dot notation. For example, this markup invokes the List.size() Apex method if the value of numbersList is declared as a List.

<apex:outputText value="{!$Cache.Session.myNamespace.myPartition.numbersList.size}"/>

If you’re using CacheBuilder, qualify the key name with the class that implements the CacheBuilder interface and the literal string _B_, in addition to the namespace and partition name. In this example, the class that implements CacheBuilder is called CacheBuilderImpl.

<apex:outputText value="{!$Cache.Session.myNamespace.myPartition.CacheBuilderImpl_B_key1}"/>