/// <summary>
/// Looks for an item in the cache and returns the bytes for that item
/// </summary>
/// <param name="key">The cache key of the item</param>
/// <returns>The bytes for the cached item or null if the item is not found in the cache</returns>
public byte[] Lookup(string key)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
var cacheEntry = GetEntry(key);
if (cacheEntry == null)
{
return(null);
}
CacheEvictionPolicy.NotifyLookup(key);
return(cacheEntry.GetBytes());
}
