Commons Cache API : simple in memory HashMap implementation.
'org.codehaus.redback.components.cache:spring-cache-hashmap:1.1'
<dependency>
<groupId>org.codehaus.redback.components.cache</groupId>
<artifactId>spring-cache-hashmap</artifactId>
<version>1.1</version>
</dependency>
<dependency org="org.codehaus.redback.components.cache" name="spring-cache-hashmap" rev="1.1"/>
"org.codehaus.redback.components.cache", "spring-cache-hashmap", "1.1"