discards all cached principals . concode_field_sep LoadingCache<C,Optional<P>> cache concode_elem_sep Meter cacheMisses concode_elem_sep Authenticator<C,P> underlying concode_elem_sep Timer gets concode_field_sep Optional<P> authenticate concode_elem_sep long size concode_elem_sep CacheStats stats concode_elem_sep void invalidate
void function ( ) { cache . invalidateAll ( ) ; }