Question

I need to cache an xml that I am reading. I’m using C# 4.0. Can someone please suggest the most elegant/ best way to cache the xml file. The cached file needs to be a singleton but the wrapper should probably be a transisent lifestyle.

many thanks,
James

Answer 1

Since this is a class library you could use a MemoryCache instance:

MemoryCache cache = new MemoryCache("MemCache");
cache.Add("CachedXML", someXML, DateTime.Now.AddDays(1));

This adds the overhead of having to keep track of the memory cache, but it allows you to easily specify a retention period and load the XML if required:

if(cache["CachedXML"] == null)
{
   //load xml and add to cache
}