| Interface | Description | 
|---|---|
| BasicAuthenticatorCacheManager | 
 This class is reponsible for maintaining a cache of the authenticator database state. 
 | 
| BasicAuthenticatorCacheNotifier | 
 Sends a notification to druid services, containing updated authenticator user map state. 
 | 
| Class | Description | 
|---|---|
| CoordinatorBasicAuthenticatorCacheNotifier | |
| CoordinatorPollingBasicAuthenticatorCacheManager | 
 Cache manager for non-coordinator services that polls the coordinator for authentication database state. 
 | 
| MetadataStoragePollingBasicAuthenticatorCacheManager | 
 Used on coordinator nodes, reading from a BasicAuthenticatorMetadataStorageUpdater that has direct access to the
 metadata store. 
 | 
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