Cache control

Configuration Files > records.config > Cache control

Cache control

Help | Content Gateway | Version 7.7.3

Configuration Variable

Data Type

Default Value

Description

proxy.config.http.
cache.http

INT

Enables (1) or disables (0) caching of HTTP requests.

proxy.config.http.
cache.ftp

INT

Enables (1) or disables (0) caching of FTP requests sent via HTTP.

proxy.config.http.cache.
ignore_client_no_cache

INT

When enabled (1), Content Gateway ignores client requests to bypass the cache.

proxy.config.http.cache.
ims_on_client_no_cache

INT

When enabled (1), Content Gateway issues a conditional request to the origin server if an incoming request has a no-cache header.

proxy.config.http.cache.
ignore_server_no_cache

INT

When enabled (1), Content Gateway ignores origin server requests to bypass the cache.

proxy.config.http.cache.
cache_responses_
to_cookies

INT

Specifies how cookies are cached:

0 = do not cache any responses to cookies

1 = cache for any content-type

2 = cache only for image types

3 = cache for all but text content-types

proxy.config.http.cache.
ignore_authentication

INT

When enabled (1), Content Gateway ignores WWW-Authentication headers in responses. WWW-Authentication headers are removed and not cached.

proxy.config.http.cache.
cache_urls_that_look_
dynamic

INT

Enables (1) or disables (0) caching of URLs that look dynamic.

proxy.config.http.cache.
enable_default_vary_
headers

INT

Enables (1) or disables (0) caching of alternate versions of HTTP objects that do not contain the Vary header.

proxy.config.http.cache.
when_to_revalidate

INT

Specifies when to revalidate content:

0 = Use cache directives or heuristic (the default value).

1 = Stale if heuristic.

2 = Always stale (always revalidate).

3 = Never stale.

4 = Use cache directives or heuristic (0) unless the request has an If-Modified-Since header. If the request has an If-Modified-Since header, Content Gateway always revalidates the cached content and uses the client's If-Modified-Since header for the proxy request.

proxy.config.http.cache.
when_to_add_no_cache_to_
msie_requests

INT

Specifies when to add no-cache directives to Microsoft Internet Explorer requests. You can specify the following:

0 = no-cache not added to MSIE requests.

1 = no-cache added to IMS MSIE requests.

2 = no-cache added to all MSIE requests.

proxy.config.http.cache.
required_headers

INT

Specifies the type of headers required in a request for the request to be cacheable.

0 = no required headers to make document cacheable.

1 = at least Last-Modified header required.

2 = explicit lifetime required, Expires or Cache-Control.