using System;

namespace FAuth.Extensions
{
    /// <summary>
    /// 数据缓冲提供器接口
    /// </summary>
    public interface ICacheProvider
    {
        /// <summary>
        /// 设置缓存数据
        /// </summary>
        /// <typeparam name="T">数据类型</typeparam>
        /// <param name="key">数据键</param>
        /// <param name="obj">数据对象</param>
        /// <param name="span">缓存时间或者从CacheTimeSpan选择值</param>
        void SetCache<T>(string key,T obj,TimeSpan span) where T : class;

        /// <summary>
        /// 从缓存中获取数据，如果未缓存返回null
        /// </summary>
        /// <typeparam name="T">数据类型</typeparam>
        /// <param name="key">缓存数据的键</param>
        /// <returns>数据对象</returns>
        T GetObj<T>(string key) where T : class, new();
    }
}