kami_itunes_june/AppleBatch_June/SiteHelper.cs

using System;
using System.Collections.Generic;

namespace AppleBatch_June
{
	public class SiteHelper
	{
		private static readonly Dictionary<string, CacheItem> _cache = new Dictionary<string, CacheItem>();
		private static readonly object _lock = new object();

		private class CacheItem
		{
			public object Value { get; set; }
			public DateTime ExpiryTime { get; set; }
		}

		public static object GetCache(string CacheId)
		{
			lock (_lock)
			{
				if (_cache.TryGetValue(CacheId, out CacheItem item))
				{
					if (DateTime.Now < item.ExpiryTime)
					{
						return item.Value;
					}
					else
					{
						_cache.Remove(CacheId);
					}
				}
			}
			return null;
		}

		public static void SetCache(string CacheId, object objCache)
		{
			SetCache(CacheId, objCache, 60);
		}

		public static void SetCache(string CacheId, object objCache, int cacheDurationSeconds)
		{
			if (objCache != null)
			{
				lock (_lock)
				{
					_cache[CacheId] = new CacheItem
					{
						Value = objCache,
						ExpiryTime = DateTime.Now.AddSeconds(cacheDurationSeconds)
					};
				}
			}
		}
	}
}