public void Process(System.Web.HttpContext current, IResponseArgs e)
{
var modDate = e.HasModifiedDate ? e.GetModifiedDateUTC() : DateTime.MinValue;
var key = e.RequestKey + "|" + modDate.Ticks.ToString(NumberFormatInfo.InvariantInfo);
CacheEntry entry;
byte[] data;
//Ensure cache is loaded
if (!loaded)
{
Load();
}
if (!TryGetData(key, out data, out entry))
{
Stopwatch sw = new Stopwatch();
sw.Start();
//Cache miss - process request, outside of lock
MemoryStream ms = new MemoryStream(4096);
e.ResizeImageToStream(ms);
data = StreamExtensions.CopyToBytes(ms, true);
sw.Stop();
//Save to cache
entry = PutData(key, data, sw.ElapsedMilliseconds);
}
((ResponseArgs)e).ResizeImageToStream = delegate(Stream s) {
s.Write(data, 0, data.Length);
};
current.RemapHandler(new NoCacheHandler(e));
if (cache.changes_since_cleanse > ChangeThreshold)
{
CleanseAndFlush();
}
else if (cache.changes_since_cleanse > 0 && DateTime.UtcNow.Subtract(lastFlush) > new TimeSpan(0, 0, 30))
{
Flush();
}
}
/// <summary>
/// Sends the response directly to the client with no caching logic.
/// </summary>
/// <param name="context"></param>
/// <param name="e"></param>
public void Process(System.Web.HttpContext context, IResponseArgs e)
{
context.RemapHandler(new NoCacheHandler(e));
// The following line of code does nothing. I don't think there is any way to make this work before .NET 2.0 SP2
//context.Handler = new NoCacheHandler(e);
}
public System.Threading.Tasks.Task ProcessAsync(System.Web.HttpContext context, IAsyncResponsePlan e)
{
context.RemapHandler(new NoCacheAsyncHandler(e));
return(Task.FromResult(true));
}
