jwcarroll

public static class CacheHelper
{
    private static readonly Object _locker = new object();

    public static T GetCacheItem<T>(String key, Func<T> cachePopulate, TimeSpan? slidingExpiration = null, DateTime? absoluteExpiration = null)
    {
        if(String.IsNullOrWhiteSpace(key)) throw new ArgumentException("Invalid cache key");
        if(cachePopulate == null) throw new ArgumentNullException("cachePopulate");
        if(slidingExpiration == null && absoluteExpiration == null) throw new ArgumentException("Either a sliding expiration or absolute must be provided");