> # Caching Realm: Authentication

> Configuration Options Related Tasks Related Topics

> Use this page to configure and enable the Authentication cache for the Caching realm. To use the Caching realm, you need to use Compatibility security. The use of the Caching realm is deprecated in this release of WebLogic Server.

> #### Configuration Options

> Name | Description
> --- | ---
> Enable Authentication Cache | Specifies whether the Authentication cache should be enabled. By default, the Authentication cache is enabled.
> Authentication Cache Size | The maximum number of Authentication requests (between 17 and 65537) that should be cached. This attribute should be a prime number for best lookup performance.
> Authentication Cache TTLPositive | The number of seconds (between 1 and a positive 32-bit integer) to retain the results of a successful Authentication lookup.
> Authentication Cache TTLNegative | The number of seconds (between 1 and a positive 32-bit integer) to retain the results of an unsuccessful Authentication lookup.

> Related Tasks

> - Configure Caching realms
> - Enable the Authentication cache
> - Enable the ACL cache
> - Enable the User cache
> - Enable the Permission cache

> Related Topics

> - Using Compatibility Security