Contents tagged with Caching
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Response caching in IIS7
Output cache module populates the IHttpCachePolicy intrinsic in BeginRequest stage if a matching profile is found. Other modules can still change cache policy for the current request which might change user-mode or kernel mode caching behavior. Output cache caches 200 responses to GET requests only. If some module already flushed the response by the time request reaches UpdateRequestCache stage or if headers are suppressed, response is not cached in output cache module. Output cache module only caches the response if some other module hasn't already cached it indicated by IHttpCachePolicy::SetIsCached. Also caching happens only for frequently hit content. Definition of frequently hit content is controlled by frequentHitThreshold and frequentHitTimePeriod properties defined in system.webServer/serverRuntime section. Default values define frequently hit content as ones which are requested twice in 10 seconds.