public static void OutputCache(this HttpResponseBase response,
int numberOfSeconds,
bool sliding = false,
IEnumerable <string> varyByParams = null,
IEnumerable <string> varyByHeaders = null,
IEnumerable <string> varyByContentEncodings = null,
HttpCacheability cacheability = HttpCacheability.Public)
{
HttpCachePolicyBase cache = response.Cache;
var context = HttpContext.Current;
cache.SetCacheability(cacheability);
cache.SetExpires(context.Timestamp.AddSeconds(numberOfSeconds));
cache.SetMaxAge(new TimeSpan(0, 0, numberOfSeconds));
cache.SetValidUntilExpires(true);
cache.SetLastModified(context.Timestamp);
cache.SetSlidingExpiration(sliding);
if (varyByParams != null)
{
foreach (var p in varyByParams)
{
cache.VaryByParams[p] = true;
}
}
if (varyByHeaders != null)
{
foreach (var headerName in varyByHeaders)
{
cache.VaryByHeaders[headerName] = true;
}
}
if (varyByContentEncodings != null)
{
foreach (var contentEncoding in varyByContentEncodings)
{
cache.VaryByContentEncodings[contentEncoding] = true;
}
}
}
internal static void OutputCache(
HttpContextBase httpContext,
HttpCachePolicyBase cache,
int numberOfSeconds,
bool sliding,
IEnumerable <string> varyByParams,
IEnumerable <string> varyByHeaders,
IEnumerable <string> varyByContentEncodings,
HttpCacheability cacheability
)
{
cache.SetCacheability(cacheability);
cache.SetExpires(httpContext.Timestamp.AddSeconds(numberOfSeconds));
cache.SetMaxAge(new TimeSpan(0, 0, numberOfSeconds));
cache.SetValidUntilExpires(true);
cache.SetLastModified(httpContext.Timestamp);
cache.SetSlidingExpiration(sliding);
if (varyByParams != null)
{
foreach (var p in varyByParams)
{
cache.VaryByParams[p] = true;
}
}
if (varyByHeaders != null)
{
foreach (var headerName in varyByHeaders)
{
cache.VaryByHeaders[headerName] = true;
}
}
if (varyByContentEncodings != null)
{
foreach (var contentEncoding in varyByContentEncodings)
{
cache.VaryByContentEncodings[contentEncoding] = true;
}
}
}
internal static void OutputCache(HttpContextBase httpContext,
HttpCachePolicyBase cache,
int numberOfSeconds,
bool sliding,
IEnumerable<string> varyByParams,
IEnumerable<string> varyByHeaders,
IEnumerable<string> varyByContentEncodings,
HttpCacheability cacheability)
{
cache.SetCacheability(cacheability);
cache.SetExpires(httpContext.Timestamp.AddSeconds(numberOfSeconds));
cache.SetMaxAge(new TimeSpan(0, 0, numberOfSeconds));
cache.SetValidUntilExpires(true);
cache.SetLastModified(httpContext.Timestamp);
cache.SetSlidingExpiration(sliding);
if (varyByParams != null)
{
foreach (var p in varyByParams)
{
cache.VaryByParams[p] = true;
}
}
if (varyByHeaders != null)
{
foreach (var headerName in varyByHeaders)
{
cache.VaryByHeaders[headerName] = true;
}
}
if (varyByContentEncodings != null)
{
foreach (var contentEncoding in varyByContentEncodings)
{
cache.VaryByContentEncodings[contentEncoding] = true;
}
}
}
private void SetCache(HttpCachePolicyBase cache, System.Net.Http.Headers.CacheControlHeaderValue cacheIn)
{
if (cacheIn.Public)
{
cache.SetCacheability(HttpCacheability.Public);
}
if (cacheIn.Private)
{
cache.SetCacheability(HttpCacheability.Private);
}
if (cacheIn.MaxAge != null)
{
var maxAge = cacheIn.MaxAge.Value;
if (maxAge.TotalDays < 1)
{
maxAge = TimeSpan.FromDays(30);
}
cache.SetCacheability(HttpCacheability.Public);
cache.SetMaxAge(maxAge);
cache.SetSlidingExpiration(true);
}
}
