Elight.Utility/Web/MemoryCacheHelper.cs

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#if !NETFRAMEWORK
using Microsoft.Extensions.Caching.Memory;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;

namespace Elight.Utility.Web
{
    public class MemoryCacheHelper
    {
        private static readonly MemoryCache Cache = new MemoryCache(new MemoryCacheOptions());
        private static readonly object _instanceLock = new object();
        private static MemoryCacheHelper _instance = null;
        private MemoryCacheHelper() { }
        /// <summary>          
        /// 获取实例 （单例模式）        
        /// </summary>          
        /// <returns></returns>          
        public static MemoryCacheHelper GetInstance()
        {
            if (_instance == null)
                lock (_instanceLock)
                    if (_instance == null)
                        _instance = new MemoryCacheHelper();
            return _instance;
        }

        /// <summary>
        /// 验证缓存项是否存在
        /// </summary>
        /// <param name="key">缓存Key</param>
        /// <returns></returns>
        public bool Exists(string key)
        {
            if (key == null)
                throw new ArgumentNullException(nameof(key));
            return Cache.TryGetValue(key, out _);
        }

        /// <summary>
        /// 添加缓存
        /// </summary>
        /// <param name="key">缓存Key</param>
        /// <param name="value">缓存Value</param>
        /// <param name="expiresSliding">滑动过期时长（如果在过期时间内有操作，则以当前时间点延长过期时间）</param>
        /// <param name="expiressAbsoulte">绝对过期时长</param>
        /// <returns></returns>
        public bool Set(string key, object value, TimeSpan expiresSliding, TimeSpan expiressAbsoulte)
        {
            if (key == null)
                throw new ArgumentNullException(nameof(key));
            if (value == null)
                throw new ArgumentNullException(nameof(value));

            Cache.Set(key, value,
                new MemoryCacheEntryOptions().SetSlidingExpiration(expiresSliding)