# Package org.keycloak.models.map.storage.chm

- Class Summary
  Class | Description
  --- | ---
  ConcurrentHashMapKeycloakTransaction<K,V extends AbstractEntity<K>,M> |
  ConcurrentHashMapStorage<K,V extends AbstractEntity<K>,M> |
  ConcurrentHashMapStorageProvider |
  ConcurrentHashMapStorageProviderFactory |
  UserSessionConcurrentHashMapStorage<K> | User session storage with a naive implementation of referential integrity in client to user session relation, restricted to ON DELETE CASCADE functionality.

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