public CredentialProvider()
		{
			_renewalPeriod = TimeSpan.FromHours(2);
			_memoryCache = new Runtime.Caching.MemoryCache("Zongsoft.Security.CredentialProvider.MemoryCache");

			//挂载内存缓存容器的事件
			_memoryCache.Changed += MemoryCache_Changed;
		}
		public CredentialProvider(Zongsoft.Services.IServiceProvider serviceProvider) : base(serviceProvider)
		{
			_renewalPeriod = TimeSpan.FromHours(2);
			_memoryCache = new MemoryCache("Flagwind.Security.CredentialProvider.MemoryCache");

			//挂载内存缓存容器的事件
			_memoryCache.Changed += MemoryCache_Changed;
		}