On Liberty, the dynamic cache service is provided by the Distributed Map Interface for Dynamic Caching feature (for object caching), distributedMap-1.0, and the Web Response Cache feature (for servlet caching) webCache-1.0. To view cache content and statistics, use the webCacheMonitor-1.0 feature.

The implementation has the following restrictions:

No cache replication. (If used, the enableCacheReplication and replicationDomain config will be found in Traditional WebSphere)
Only the high-performance disk caching mode is supported with random and size eviction techniques More can be found here.
There is no support for Web Services client and server side caching as well as portlet caching in the cachespec.xml file
Portlet caching and Web Services client and server side caching are not supported in the cachespec.xml file
Servlet caching of SingleThreadModel servlets is not supported
Defining cache configuration by using properties files is not supported for JAR files that contain only Enterprise JavaBeans
Limiting the memory cache sizes in megabytes works only for 32-bit Java Virtual Machines

This rule flags Java code that has references to the following:

com.ibm.websphere.cache
com.ibm.websphere.cache.DynamicCacheAccessor.getServletCache()
com.ibm.websphere.cache.DynamicCacheAccessor.getServletCacheInstance(java.lang.String name)
com.ibm.websphere.cache.ServletCache
com.ibm.websphere.cache.ServletCache.invalidateById(java.lang.String key, boolean waitOnInvalidation)
com.ibm.ws.cache
com.ibm.wsspi.cache
com.ibm.websphere.servlet.cache

References to the com.ibm.websphere.cache.webservices package are handled by a different rule, The WebSphere web services APIs are unavailable.

The following APIs and SPIs are not available in Liberty:

com.ibm.websphere.cache.ServletCache
com.ibm.wsspi.cache.CacheInstanceResourceBinder
com.ibm.wsspi.cache.CacheMonitor
com.ibm.wsspi.cache.ESIStats
com.ibm.wsspi.cache.ESIStats$ESIServerStats
com.ibm.wsspi.cache.ESIStats$ESIServerStats$ESIProcessorStats
com.ibm.wsspi.cache.ESIStats$ESIServerStats$ESIProcessorStats$ESICacheEntryStats

This rule is flagged once per Java class.

For detailed information about dynamic cache on Liberty, see the following resources:

Liberty:Runtime environment known issues and restrictions
Dynamic cache in Liberty document
Distributed Map interface for Dynamic Caching feature documentation
Web Response Cache feature documentation