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# Caching Realm-->ACL

Tasks Related Topics Attributes

## Overview

Use this page to configure and enable the ACL 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.

## Tasks

Enabling the ACL Cache

## Related Topics

Introduction to WebLogic Security

Managing WebLogic Security

Securing WebLogic Resources

Programmimg WebLogic Security

Developing Security Providers for WebLogic Server

Securing a Production Environment

The Security topics in the WebLogic Server 8.1 Upgrade Guide

Security FAQ

The Security page in the WebLogic Server documentation

## Attributes

Table 124-1

Attribute Label | Description | Value Constraints
--- | --- | ---
Enable ACL Cache | Enables the ACL cache. By default,the ACL cache is enabled. | Default: true Valid values: true false
ACL Cache Size | Maximum number of ACL lookups to cache. This attribute should be a prime number for best lookup performance. | Minimum: 17 Maximum: 65537 Default: 211
ACL Cache Positive TTL | Number of seconds to retain the results of a successful ACL lookup. | Minimum: 1 Maximum: 2147483647 Default: 60
ACL Cache Negative TTL | Number of seconds to retain the results of an unsuccessful ACL lookup. | Minimum: 1 Maximum: 2147483647 Default: 10