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  • 缓存管理的帮助类(MemoryCache版,.net 4以上支持)

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Runtime.Caching;
    using System.Text;
    
    namespace CNBlogs.Zzk.Domain.Entities
    {
        public class DictionaryCacheManager<TK, TV>  
        {
            private ObjectCache memoryCache;
    
            public DictionaryCacheManager():this(null){}
            public DictionaryCacheManager(string name)
            {
    
                memoryCache = new MemoryCache(string.Format("{0}-{1}-{2}", typeof (TK).Name, typeof (TV).Name, name));
            }
    
            public TV Get(TK key,Func<TV> getValue)
            {
                if(memoryCache.Contains(key.ToString()))
                {
                    return (TV)memoryCache[key.ToString()];
                }
                else
                {
                    var policy = new CacheItemPolicy();
                    var  v = getValue();
                    object o = v;
                    memoryCache.Set(key.ToString(), o, policy);
                    return v;
                }
            }
    
            public TV Get(TK key, Func<TV> getValue,DateTimeOffset dateTimeOffset)
            {
                if (memoryCache.Contains(key.ToString()))
                {
                    return (TV)memoryCache[key.ToString()];
                }
                else
                {
                    var v = getValue();
                    object o = v;
                    memoryCache.Set(key.ToString(), o, dateTimeOffset);
                    return v;
                }
            }
    
            public void Clear()
            {
                memoryCache.ToList().ForEach(kv => memoryCache.Remove(kv.Key));
            }
            public void Clear(TK key)
            {
                memoryCache.Remove(key.ToString());
            }
    
        }
    }
    
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  • 原文地址:https://www.cnblogs.com/jinzhao/p/2545450.html
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