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HTTP Cacheability Configuration

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Caching

<@submit_error_flg proxy.config.http.cache.http>HTTP Caching
> Enabled > Disabled	Enables/Disables caching of HTTP documents.

Behavior

<@submit_error_flg proxy.config.http.cache.required_headers>Required Headers
> An Explicit Lifetime Header > A Last-Modified Header > No Required Headers	Specifies the minimum header information required for a document to be cachable.
<@submit_error_flg proxy.config.http.cache.when_to_revalidate>When to Revalidate
> Never Revalidate > Always Revalidate > Revalidate if Heuristic Expiration > Use Cache Directive or Heuristic	Specifies when to revalidate documents.
<@submit_error_flg proxy.config.http.cache.when_to_add_no_cache_to_msie_requests>Add "no-cache" to MSIE Requests
> To All MSIE Requests > To IMS MSIE Requests > Not to Any MSIE Requests	Specifies when to add "no-cache" directives to Microsoft Internet Explorer requests.
<@submit_error_flg proxy.config.http.cache.ignore_client_no_cache>Ignore "no-cache" in Client Requests
> Enabled > Disabled	When enabled, <@record proxy.config.product_name> ignores "no-cache" header in client requests to bypass the cache.

Freshness

<@submit_error_flg proxy.config.http.cache.heuristic_min_lifetime>Minimum Heuristic Lifetime
	Specifies the minimum amount of time that a document in the cache can be considered fresh if an explicit Expires header is not present.
<@submit_error_flg proxy.config.http.cache.heuristic_max_lifetime>Maximum Heuristic Lifetime
	Specifies the maximum amount of time that a document in the cache can be considered fresh if an explicit Expires header is not present.

<@submit_error_flg proxy.config.cache.limits.http.max_alts>Maximum Alternates

Specifies the maximum number of alternates <@record proxy.config.product_name> can cache for an HTTP document.

Vary Based on Content Type

<@submit_error_flg proxy.config.http.cache.vary_default_headers>Enable/Disable
> Enabled > Disabled	Enables/Disables caching of alternate versions for HTTP documents that do not contain the Vary header. If no Vary header is present, <@record proxy.config.product_name> will vary on the headers specified below, depending on the document's content type.
<@submit_error_flg proxy.config.http.cache.vary_default_text>Vary by Default on Text
	Specifies the header on which <@record proxy.config.product_name> varies for text documents.
<@submit_error_flg proxy.config.http.cache.vary_default_images>Vary by Default on Images
	Specifies the header on which <@record proxy.config.product_name> varies for images.
<@submit_error_flg proxy.config.http.cache.vary_default_other>Vary by Default on Other Document Types
	Specifies the header on which <@record proxy.config.product_name> varies for anything other than text and images.

Dynamic Caching

<@submit_error_flg proxy.config.http.cache.cache_urls_that_look_dynamic>Caching Documents with Dynamic URLs
> Enabled > Disabled	When enabled, <@record proxy.config.product_name> will attempt to cache pages it recognizes as dynamic by checking the URL. A URL is considered dynamic if it contains a question mark(?), a semi-colon(;), cgi, or if it ends in .asp. However, pages with "no-cache" headers will not be cached.
<@submit_error_flg proxy.config.http.cache.cache_responses_to_cookies>Caching Response to Cookies
> Cache All but Text > Cache Only Image Types > Cache Any Content-Type > No Cache on Cookies	Specifies how cookies are cached.

<@submit_error_flg proxy.config.cache.control.filename>Caching Policy/Forcing Document Caching
The "<@record proxy.config.cache.control.filename>" file lets you specify how a particular group of URLs should be cached. You can also define ttl-in-cache rules that force a document to get cached for the specified duration regardless of Cache-Control response headers. These rules can also be applied to documents with dynamic URLs.
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