描 述:缓存工厂类

     /// <summary>
     ///     描 述:缓存工厂类
     /// </summary>
     public class CacheFactory
     {

         /// <summary>
         ///     定义通用的Repository
         /// </summary>
         /// <returns></returns>
         public static ICacheService Cache()
         {
             var cacheType = Config.GetValue("CacheType");
             switch (cacheType)
             {
                 case "MemoryCache":
                     return new MemoryCacheService(null);

                 case "RedisCache":
                     return new RedisCacheService();

                 default:
                     return new MemoryCacheService(null);
             }
         }
     }

描 述:缓存接口

     public interface ICacheService
     {

         /// <summary>
         /// 验证缓存项是否存在
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         bool Exists(string key);

         /// <summary>
         /// 验证缓存项是否存在(异步方式)
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         //Task<bool> ExistsAsync(string key);

         /// <summary>
         /// 添加缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">缓存Value</param>
         /// <returns></returns>
         bool Add(string key, object value);

         /// <summary>
         /// 添加缓存(异步方式)
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">缓存Value</param>
         /// <returns></returns>
         //Task<bool> AddAsync(string key, object value);

         /// <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>
         bool Add(string key, object value, TimeSpan expiresSliding, TimeSpan expiressAbsoulte);

         /// <summary>
         /// 添加缓存(异步方式)
         /// </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>
         //Task<bool> AddAsync(string key, object value, TimeSpan expiresSliding, TimeSpan expiressAbsoulte);

         /// <summary>
         /// 添加缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">缓存Value</param>
         /// <param name="expiresIn">缓存时长</param>
         /// <param name="isSliding">是否滑动过期(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>
         /// <returns></returns>
         bool Add(string key, object value, TimeSpan expiresIn, bool isSliding = false);

         /// <summary>
         /// 添加缓存(异步方式)
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">缓存Value</param>
         /// <param name="expiresIn">缓存时长</param>
         /// <param name="isSliding">是否滑动过期(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>
         /// <returns></returns>
         //Task<bool> AddAsync(string key, object value, TimeSpan expiresIn, bool isSliding = false);

         /// <summary>
         /// 删除缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         bool Remove(string key);

         /// <summary>
         /// 删除缓存(异步方式)
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         //Task<bool> RemoveAsync(string key);

         /// <summary>
         /// 批量删除缓存
         /// </summary>
         /// <param name="key">缓存Key集合</param>
         /// <returns></returns>
         void RemoveAll(IEnumerable<string> keys);

         /// <summary>
         /// 批量删除缓存(异步方式)
         /// </summary>
         /// <param name="key">缓存Key集合</param>
         /// <returns></returns>
         //Task RemoveAllAsync(IEnumerable<string> keys);

         /// <summary>
         /// 获取缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         T Get<T>(string key) where T : class;

         /// <summary>
         /// 获取缓存(异步方式)
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         //Task<T> GetAsync<T>(string key) where T : class;

         /// <summary>
         /// 获取缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         object Get(string key);

         /// <summary>
         /// 获取缓存(异步方式)
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         //Task<object> GetAsync(string key);

         /// <summary>
         /// 获取缓存集合
         /// </summary>
         /// <param name="keys">缓存Key集合</param>
         /// <returns></returns>
         IDictionary<string, object> GetAll(IEnumerable<string> keys);

         /// <summary>
         /// 获取缓存集合(异步方式)
         /// </summary>
         /// <param name="keys">缓存Key集合</param>
         /// <returns></returns>
         //Task<IDictionary<string, object>> GetAllAsync(IEnumerable<string> keys);

         /// <summary>
         /// 修改缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存Value</param>
         /// <returns></returns>
         bool Replace(string key, object value);

         /// <summary>
         /// 修改缓存(异步方式)
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存Value</param>
         /// <returns></returns>
         //Task<bool> ReplaceAsync(string key, object value);

         /// <summary>
         /// 修改缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存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>
         bool Replace(string key, object value, TimeSpan expiresSliding, TimeSpan expiressAbsoulte);

         /// <summary>
         /// 修改缓存(异步方式)
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存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>
         //Task<bool> ReplaceAsync(string key, object value, TimeSpan expiresSliding, TimeSpan expiressAbsoulte);

         /// <summary>
         /// 修改缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存Value</param>
         /// <param name="expiresIn">缓存时长</param>
         /// <param name="isSliding">是否滑动过期(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>
         /// <returns></returns>
         bool Replace(string key, object value, TimeSpan expiresIn, bool isSliding = false);

         /// <summary>
         /// 修改缓存(异步方式)
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存Value</param>
         /// <param name="expiresIn">缓存时长</param>
         /// <param name="isSliding">是否滑动过期(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>
         /// <returns></returns>
         //Task<bool> ReplaceAsync(string key, object value, TimeSpan expiresIn, bool isSliding = false);

     }

描 述 :MemoryCache

  public class MemoryCacheService : ICacheService
     {
         protected IMemoryCache Cache;
         public MemoryCacheService(IMemoryCache _cache)
         {
             Cache = _cache;
         }

         /// <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));
             }
             object cached;
             return Cache.TryGetValue(key, out cached);
         }
         /// <summary>
         /// 添加缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">缓存Value</param>
         /// <returns></returns>
         public bool Add(string key, object value)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             if (value == null)
             {
                 throw new ArgumentNullException(nameof(value));
             }
             Cache.Set(key, value);
             return Exists(key);
         }
         /// <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 Add(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)
                     .SetAbsoluteExpiration(expiressAbsoulte)
                     );

             return Exists(key);
         }
         /// <summary>
         /// 添加缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">缓存Value</param>
         /// <param name="expiresIn">缓存时长</param>
         /// <param name="isSliding">是否滑动过期(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>
         /// <returns></returns>
         public bool Add(string key, object value, TimeSpan expiresIn, bool isSliding = false)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             if (value == null)
             {
                 throw new ArgumentNullException(nameof(value));
             }
             if (isSliding)
                 Cache.Set(key, value,
                     new MemoryCacheEntryOptions()
                     .SetSlidingExpiration(expiresIn)
                     );
             else
                 Cache.Set(key, value,
                 new MemoryCacheEntryOptions()
                 .SetAbsoluteExpiration(expiresIn)
                 );

             return Exists(key);
         }
         /// <summary>
         /// 删除缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         public bool Remove(string key)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             Cache.Remove(key);

             return !Exists(key);
         }
         /// <summary>
         /// 批量删除缓存
         /// </summary>
         /// <param name="key">缓存Key集合</param>
         /// <returns></returns>
         public void RemoveAll(IEnumerable<string> keys)
         {
             if (keys == null)
             {
                 throw new ArgumentNullException(nameof(keys));
             }

             keys.ToList().ForEach(item => Cache.Remove(item));
         }

         /// <summary>
         /// 获取缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         public T Get<T>(string key) where T : class
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             return Cache.Get(key) as T;
         }
         /// <summary>
         /// 获取缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         public object Get(string key)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             return Cache.Get(key);
         }
         /// <summary>
         /// 获取缓存集合
         /// </summary>
         /// <param name="keys">缓存Key集合</param>
         /// <returns></returns>
         public IDictionary<string, object> GetAll(IEnumerable<string> keys)
         {
             if (keys == null)
             {
                 throw new ArgumentNullException(nameof(keys));
             }

             var dict = new Dictionary<string, object>();

             keys.ToList().ForEach(item => dict.Add(item, Cache.Get(item)));

             return dict;
         }

         /// <summary>
         /// 修改缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存Value</param>
         /// <returns></returns>
         public bool Replace(string key, object value)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             if (value == null)
             {
                 throw new ArgumentNullException(nameof(value));
             }
             if (Exists(key))
                 if (!Remove(key)) return false;

             return Add(key, value);

         }
         /// <summary>
         /// 修改缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存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 Replace(string key, object value, TimeSpan expiresSliding, TimeSpan expiressAbsoulte)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             if (value == null)
             {
                 throw new ArgumentNullException(nameof(value));
             }
             if (Exists(key))
                 if (!Remove(key)) return false;

             return Add(key, value, expiresSliding, expiressAbsoulte);
         }
         /// <summary>
         /// 修改缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存Value</param>
         /// <param name="expiresIn">缓存时长</param>
         /// <param name="isSliding">是否滑动过期(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>
         /// <returns></returns>
         public bool Replace(string key, object value, TimeSpan expiresIn, bool isSliding = false)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             if (value == null)
             {
                 throw new ArgumentNullException(nameof(value));
             }
             if (Exists(key))
                 if (!Remove(key)) return false;

             return Add(key, value, expiresIn, isSliding);
         }

         public void Dispose()
         {
             if (Cache != null)
                 Cache.Dispose();
             GC.SuppressFinalize(this);
         }

     }

描 述: RedisCache

  public class RedisCacheService : ICacheService
     {
         public RedisCacheService(/*RedisCacheOptions options, int database = 0*/)
         //这里可以做成依赖注入,但没打算做成通用类库,所以直接把连接信息直接写在帮助类里
         {
             RedisCacheOptions options = new RedisCacheOptions
             {
                 Configuration = "127.0.0.1:6379",
                 InstanceName = "RedisCacheService_u48H4GU583hyehdH43"
             };
             //RedisConfig.Connection;
             // RedisConfig.InstanceName;
             ; //RedisConfig.DefaultDatabase;
             _connection = ConnectionMultiplexer.Connect(options.Configuration);
             Cache = _connection.GetDatabase(database);
             _instance = options.InstanceName;
         }
         protected IDatabase Cache;
         private readonly ConnectionMultiplexer _connection;
         private readonly string _instance;

         //public RedisCacheService(RedisCacheOptions options, int database = 0)
         //{
         //    _connection = ConnectionMultiplexer.Connect(options.Configuration);
         //    Cache = _connection.GetDatabase(database);
         //    _instance = options.InstanceName;
         //}
         public string GetKeyForRedis(string key)
         {
             return _instance + key;
         }

         /// <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.KeyExists(GetKeyForRedis(key));
         }

         /// <summary>
         /// 添加缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">缓存Value</param>
         /// <returns></returns>
         public bool Add(string key, object value)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             return Cache.StringSet(GetKeyForRedis(key), Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(value)));
         }
         /// <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,Redis中无效)</param>
         /// <param name="expiressAbsoulte">绝对过期时长</param>
         /// <returns></returns>
         public bool Add(string key, object value, TimeSpan expiresSliding, TimeSpan expiressAbsoulte)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             return Cache.StringSet(GetKeyForRedis(key), Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(value)), expiressAbsoulte);
         }
         /// <summary>
         /// 添加缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">缓存Value</param>
         /// <param name="expiresIn">缓存时长</param>
         /// <param name="isSliding">是否滑动过期(如果在过期时间内有操作,则以当前时间点延长过期时间,Redis中无效)</param>
         /// <returns></returns>
         public bool Add(string key, object value, TimeSpan expiresIn, bool isSliding = false)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }

             return Cache.StringSet(GetKeyForRedis(key), Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(value)), expiresIn);
         }/// <summary>
          /// 删除缓存
          /// </summary>
          /// <param name="key">缓存Key</param>
          /// <returns></returns>
         public bool Remove(string key)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }
             return Cache.KeyDelete(GetKeyForRedis(key));
         }
         /// <summary>
         /// 批量删除缓存
         /// </summary>
         /// <param name="key">缓存Key集合</param>
         /// <returns></returns>
         public void RemoveAll(IEnumerable<string> keys)
         {
             if (keys == null)
             {
                 throw new ArgumentNullException(nameof(keys));
             }

             keys.ToList().ForEach(item => Remove(GetKeyForRedis(item)));
         }

         /// <summary>
         /// 获取缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         public T Get<T>(string key) where T : class
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }

             var value = Cache.StringGet(GetKeyForRedis(key));

             if (!value.HasValue)
             {
                 return default(T);
             }

             return JsonConvert.DeserializeObject<T>(value);
         }
         /// <summary>
         /// 获取缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <returns></returns>
         public object Get(string key)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }

             var value = Cache.StringGet(GetKeyForRedis(key));

             if (!value.HasValue)
             {
                 return null;
             }

             return JsonConvert.DeserializeObject(value);
         }
         /// <summary>
         /// 获取缓存集合
         /// </summary>
         /// <param name="keys">缓存Key集合</param>
         /// <returns></returns>
         public IDictionary<string, object> GetAll(IEnumerable<string> keys)
         {
             if (keys == null)
             {
                 throw new ArgumentNullException(nameof(keys));
             }
             var dict = new Dictionary<string, object>();

             keys.ToList().ForEach(item => dict.Add(item, Get(GetKeyForRedis(item))));

             return dict;
         }
         /// <summary>
         /// 修改缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存Value</param>
         /// <returns></returns>
         public bool Replace(string key, object value)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }

             if (Exists(key))
                 if (!Remove(key))
                     return false;

             return Add(key, value);

         }
         /// <summary>
         /// 修改缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存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 Replace(string key, object value, TimeSpan expiresSliding, TimeSpan expiressAbsoulte)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }

             if (Exists(key))
                 if (!Remove(key))
                     return false;

             return Add(key, value, expiresSliding, expiressAbsoulte);
         }
         /// <summary>
         /// 修改缓存
         /// </summary>
         /// <param name="key">缓存Key</param>
         /// <param name="value">新的缓存Value</param>
         /// <param name="expiresIn">缓存时长</param>
         /// <param name="isSliding">是否滑动过期(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>
         /// <returns></returns>
         public bool Replace(string key, object value, TimeSpan expiresIn, bool isSliding = false)
         {
             if (key == null)
             {
                 throw new ArgumentNullException(nameof(key));
             }

             if (Exists(key))
                 if (!Remove(key)) return false;

             return Add(key, value, expiresIn, isSliding);
         }
         public void Dispose()
         {
             if (_connection != null)
                 _connection.Dispose();
             GC.SuppressFinalize(this);
         }

     }

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