Need to purge cache without resetting IIS?? Below is a simple and effective C# code to help you on that.
The code snippet is helpful particularly on QA & Prod environments where you are not required to reset the IIS that frequently as you do on your local DEV machine.

public void PurgeCache()
{
	List keys = new List();

	IDictionaryEnumerator enumerator = Cache.GetEnumerator();

	while (enumerator.MoveNext())
	{
		keys.Add(enumerator.Key.ToString());
	}

	for (int i = 0; i < keys.Count; i++)
	{
		Cache.Remove(keys[i]);
	}
}

You can add this method on Page_Load() of an .aspx page and directly browse that page on IIS.
Further, you can restrict the access to this method based on IP@ so that it shouldn’t be publicly accessible.