I have a simple site that I want to enable output caching for, but it uses ASP.NET Web Pages ( http://asp.net/web-pages , not Web Forms or MVC). Any guidance?
You can put this at the top of any page you want to cache on the server:
Response.Cache.SetCacheability(HttpCacheability.Server);
Response.Cache.SetExpires(DateTime.Now.AddSeconds(60));
Response.Cache.SetValidUntilExpires(true);
Response.Cache.VaryByParams.IgnoreParams = true;
Of, if you want to cache all pages in a folder, put the code in a _PageStart file.
More information on MSDN: http://msdn.microsoft.com/en-us/library/system.web.httpresponse.cache.aspx
The following code does everything you need, and has several overloads to fine tune your output cache for a given page:
@{
var seconds = 600; //10min
Response.OutputCache(seconds);
}
Behind the scenes, this is an extension method contained in System.Web.WebPages.dll assembly that do this:
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((double) numberOfSeconds));
cache.SetMaxAge(new TimeSpan(0, 0, numberOfSeconds));
cache.SetValidUntilExpires(true);
cache.SetLastModified(httpContext.Timestamp);
cache.SetSlidingExpiration(sliding);
if (varyByParams != null)
{
foreach (string index in varyByParams)
cache.VaryByParams[index] = true;
}
if (varyByHeaders != null)
{
foreach (string index in varyByHeaders)
cache.VaryByHeaders[index] = true;
}
if (varyByContentEncodings == null)
return;
foreach (string index in varyByContentEncodings)
cache.VaryByContentEncodings[index] = true;
}
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