// Varies the output cache based on the contact's gender
public static IOutputCacheKeyOptions VaryByContactGender(this IOutputCacheKeyOptions options)
{
// Adds the ContactGenderOutputCacheKey to the options object
options.AddCacheKey(new ContactGenderOutputCacheKey());
return(options);
}
/// <summary>
/// When a OutputCache VaryByCustom string is passed, can define various options to this to alter the Cache Name.
/// </summary>
/// <param name="context"></param>
/// <param name="custom"></param>
/// <returns></returns>
public override string GetVaryByCustomString(HttpContext context, string custom)
{
// Creates the options object used to store individual cache key parts
IOutputCacheKeyOptions options = OutputCacheKeyHelper.CreateOptions();
// Selects a caching configuration according to the current custom string, allows semi-colon separate list
foreach (string customItem in custom.Split(";".ToCharArray(), StringSplitOptions.RemoveEmptyEntries))
{
switch (customItem.ToLowerInvariant())
{
case "default":
// Sets the variables that compose the cache key for the 'Default' VaryByCustom string
options
.VaryByHost()
.VaryByBrowser()
.VaryByUser();
break;
case "onlinemarketing":
// Sets the variables that compose the cache key for the 'OnlineMarketing' VaryByCustom string
options
.VaryByCookieLevel()
.VaryByPersona()
.VaryByABTestVariant();
break;
}
}
// Combines individual 'VaryBy' key parts into a cache key under which the output is cached
string cacheKey = OutputCacheKeyHelper.GetVaryByCustomString(context, custom, options);
// Returns the constructed cache key
if (!String.IsNullOrEmpty(cacheKey))
{
return(cacheKey);
}
// Calls the base implementation if the provided custom string does not match any predefined configurations
return(base.GetVaryByCustomString(context, custom));
}
//EndDocSection:ApplicationError
//DocSection:GetVaryByCustom
public override string GetVaryByCustomString(HttpContext context, string arg)
{
// Creates the options object used to store individual cache key parts
IOutputCacheKeyOptions options = OutputCacheKeyHelper.CreateOptions();
// Selects a caching configuration according to the current custom string
switch (arg)
{
case "Default":
// Sets the variables that compose the cache key for the 'Default' VaryByCustom string
options
.VaryByHost()
.VaryByBrowser()
.VaryByUser();
break;
case "OnlineMarketing":
// Sets the variables that compose the cache key for the 'OnlineMarketing' VaryByCustom string
options
.VaryByCookieLevel()
.VaryByPersona()
.VaryByABTestVariant();
break;
}
// Combines individual 'VaryBy' key parts into a cache key under which the output is cached
string cacheKey = OutputCacheKeyHelper.GetVaryByCustomString(context, arg, options);
// Returns the constructed cache key
if (!String.IsNullOrEmpty(cacheKey))
{
return(cacheKey);
}
// Calls the base implementation if the provided custom string does not match any predefined configurations
return(base.GetVaryByCustomString(context, arg));
}
public static IOutputCacheKeyOptions VarByAssetsCookie(this IOutputCacheKeyOptions options)
{
options.AddCacheKey(new AssetsOutputCacheKey());
return(options);
}
