Splunk AppDynamics automatically tracks long-lived Java collections (HashMap, ArrayList, and so on) with Automatic Leak Detection. Custom Memory Structures that you have configured, display in Tiers & Nodes > Memory > Custom Memory Structures.

Splunk AppDynamics provides visibility into:

• Cache access for slow, very slow, and stalled business transactions
• Usage statistics (rolled up to Business Transaction level)
• Accessed keys
• Deep size of the internal cache structure