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# Caching Realm --> Users

Tasks Related Topics Attributes

## Overview

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

## Tasks

Enabling the User 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 129-1

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