Using Cache-Control Directives

Cache-control directives are a way for the Enterprise Web Server to control what information is cached by a proxy server. By using cache-control directives, you override the default caching of the proxy to protect sensitive information from being cached and perhaps retrieved later. For these directives to work, the proxy server must comply with HTTP 1.1.

For specific directories in your server, you can set the cache-control directives to one of the following levels:

• Public: The response is cacheable by any cache.
• Private: The response is cacheable only by a private (non-shared) cache.
• No Cache: The response must not be cached anywhere.
• No Store: The cache must not store the request or response anywhere in nonvolatile storage.
• Must Revalidate: The cache entry must be revalidated from the originating server.
• Maximum Age (in seconds): The client does not accept a response that has a greater age than the maximum age.

To set the cache-control directives, do the following:

1. Click Enterprise Web Server servername > Content Management > Cache Control Directives.

2. Select the directory or directories that you want to set cache-control directives for from the Editing drop-down list.

3. Click Browse to view the different server resources.

4. Click Wildcard to enter the pattern you want to edit.

5. Select the level of control you want to set.

   The default is public.

6. Click OK.

   For more information on HTTP 1.1, see the Hypertext Transfer Protocol (HTTP/1.1 specification [RFC 2068]).