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HTTP_CACHE_POLICY structure (http.h)

  • Article

The HTTP_CACHE_POLICY structure is used to define a cache policy associated with a cached response fragment.

Syntax

typedef struct _HTTP_CACHE_POLICY {
  HTTP_CACHE_POLICY_TYPE Policy;
  ULONG                  SecondsToLive;
} HTTP_CACHE_POLICY, *PHTTP_CACHE_POLICY;

Members

Policy

This parameter is one of the following values from the HTTP_CACHE_POLICY_TYPE to control how an associated response or response fragment is cached.

Value Meaning
HttpCachePolicyNocache
 Do not cache the data at all.
HttpCachePolicyUserInvalidates
 Cache the data until the application explicitly releases it.
HttpCachePolicyTimeToLive
 Cache the data for a number of seconds specified by the SecondsToLive member.

SecondsToLive

When the Policy member is equal to HttpCachePolicyTimeToLive, data is cached for SecondsToLive seconds before it is released. For other values of Policy, SecondsToLive is ignored.

Requirements

Requirement Value
Minimum supported client Windows Vista, Windows XP with SP2 [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Header http.h

See also

HttpAddFragmentToCache