RMS.Common/Tools/LocalCache.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Caching;
using System.Text;
using System.Threading.Tasks;

namespace RMS.Common.Tools
{

    /// <summary>
    /// 本地缓存
    /// </summary>
    public class LocalCache
    {
        private static readonly ObjectCache Cache;

        static LocalCache()
        {
            Cache = MemoryCache.Default;
        }

        private static DateTimeOffset GetTimeOffset(int seconds)
        {
            return seconds <= 0 ? DateTimeOffset.MaxValue : DateTimeOffset.Now.AddSeconds(seconds);
        }

        public bool Add(string key, string value, int seconds = 0)
        {
            return !value.IsNullOrEmpty() && Cache.Add(key, value, GetTimeOffset(seconds));
        }

        public bool Add<T>(string key, T value, int seconds = 0) where T : class, new()
        {
            return Add(key, value.ToJson(), seconds);
        }

        public bool Set(string key, string value, int seconds = 0)
        {
            if (value.IsNullOrEmpty())
                return false;

            Cache.Set(key, value, GetTimeOffset(seconds));
            return true;
        }

        public bool Set<T>(string key, T value, int seconds = 0) where T : class, new()
        {
            if (value.IsNull())
                return false;

            Set(key, value.ToJson(), seconds);
            return true;
        }

        public string Get(string key)
        {
            return Get<string>(key);
        }