详解StackExchange.Redis通用封装类分享

来源：本站原创|时间：2020-01-10|栏目：C#教程|点击：次

前两天朋友问我，有没有使用过StackExchange.Redis，问我要个封装类，由于之前都是使用ServiceStack.Redis，由于ServiceStack.Redis v4版本后是收费版的，所以现在也很有公司都在使用StackExchange.Redis而抛弃ServiceStack.Redis了。其实个人觉得，两个驱动都不错，只是由于ServiceStack.Redis收费导致目前很多公司都是基于V3版本的使用，也有人说V3版本有很多Bug，没有维护和升级，不过至少目前我是没发现Bug。

不过ServiceStack.Redis同StackExchange.Redis比较，抛开收费的来说，确认比StackExchange.Redis 更有优势。StackExchange.Redis文档很少，更不要说国内的文档了，连github上面对应的介绍文档都是很片面，这点我真的觉得StackExchange.Redis的作者至少要完善下文档，很多都是要看源码的例子才有。网上对StackExchange.Redis的使用例子也比ServiceStack.Redis少得多，不是说没人用，只是我查来查去，大部分都是基于String类型的数据进行使用的封装类，对于List，SortedSet，Hash的封装操作都很少，基本都是东写一点，西写一点，很难找到完整的。在参考了一些文章和源码后，这里提供一个自己封装的类，基本提供对于各种类型的使用封装，提供给大家学习使用，如果有哪里写的不好的，大家也可以互相交流。

ConnectionMultiplexer 封装

首先是 ConnectionMultiplexer 的封装，ConnectionMultiplexer对象是StackExchange.Redis最中枢的对象。这个类的实例需要被整个应用程序域共享和重用的，所以不需要在每个操作中不停的创建该对象的实例，一般都是使用单例来创建和存放这个对象，这个在官网上也有说明。

/// <summary>
 /// ConnectionMultiplexer对象管理帮助类
 /// </summary>
 public static class RedisConnectionHelp
 {
  //系统自定义Key前缀
  public static readonly string SysCustomKey = ConfigurationManager.AppSettings["redisKey"] ?? "";

  //"127.0.0.1:6379,allowadmin=true
  private static readonly string RedisConnectionString = ConfigurationManager.ConnectionStrings["RedisExchangeHosts"].ConnectionString;

  private static readonly object Locker = new object();
  private static ConnectionMultiplexer _instance;
  private static readonly ConcurrentDictionary<string, ConnectionMultiplexer> ConnectionCache = new ConcurrentDictionary<string, ConnectionMultiplexer>();

  /// <summary>
  /// 单例获取
  /// </summary>
  public static ConnectionMultiplexer Instance
  {
   get
   {
    if (_instance == null)
    {
     lock (Locker)
     {
      if (_instance == null || !_instance.IsConnected)
      {
       _instance = GetManager();
      }
     }
    }
    return _instance;
   }
  }

  /// <summary>
  /// 缓存获取
  /// </summary>
  /// <param name="connectionString"></param>
  /// <returns></returns>
  public static ConnectionMultiplexer GetConnectionMultiplexer(string connectionString)
  {
   if (!ConnectionCache.ContainsKey(connectionString))
   {
    ConnectionCache[connectionString] = GetManager(connectionString);
   }
   return ConnectionCache[connectionString];
  }

  private static ConnectionMultiplexer GetManager(string connectionString = null)
  {
   connectionString = connectionString ?? RedisConnectionString;
   var connect = ConnectionMultiplexer.Connect(connectionString);

   //注册如下事件
   connect.ConnectionFailed += MuxerConnectionFailed;
   connect.ConnectionRestored += MuxerConnectionRestored;
   connect.ErrorMessage += MuxerErrorMessage;
   connect.ConfigurationChanged += MuxerConfigurationChanged;
   connect.HashSlotMoved += MuxerHashSlotMoved;
   connect.InternalError += MuxerInternalError;

   return connect;
  }

  #region 事件

  /// <summary>
  /// 配置更改时
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private static void MuxerConfigurationChanged(object sender, EndPointEventArgs e)
  {
   Console.WriteLine("Configuration changed: " + e.EndPoint);
  }

  /// <summary>
  /// 发生错误时
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private static void MuxerErrorMessage(object sender, RedisErrorEventArgs e)
  {
   Console.WriteLine("ErrorMessage: " + e.Message);
  }

  /// <summary>
  /// 重新建立连接之前的错误
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private static void MuxerConnectionRestored(object sender, ConnectionFailedEventArgs e)
  {
   Console.WriteLine("ConnectionRestored: " + e.EndPoint);
  }

  /// <summary>
  /// 连接失败 ， 如果重新连接成功你将不会收到这个通知
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private static void MuxerConnectionFailed(object sender, ConnectionFailedEventArgs e)
  {
   Console.WriteLine("重新连接：Endpoint failed: " + e.EndPoint + ", " + e.FailureType + (e.Exception == null ? "" : (", " + e.Exception.Message)));
  }

  /// <summary>
  /// 更改集群
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private static void MuxerHashSlotMoved(object sender, HashSlotMovedEventArgs e)
  {
   Console.WriteLine("HashSlotMoved:NewEndPoint" + e.NewEndPoint + ", OldEndPoint" + e.OldEndPoint);
  }

  /// <summary>
  /// redis类库错误
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private static void MuxerInternalError(object sender, InternalErrorEventArgs e)
  {
   Console.WriteLine("InternalError:Message" + e.Exception.Message);
  }

  #endregion 事件
 }

RedisHelper 通用操作类封　　

public class RedisHelper
 {
  private int DbNum { get; }
  private readonly ConnectionMultiplexer _conn;
  public string CustomKey;

  #region 构造函数

  public RedisHelper(int dbNum = 0)
    : this(dbNum, null)
  {
  }

  public RedisHelper(int dbNum, string readWriteHosts)
  {
   DbNum = dbNum;
   _conn =
    string.IsNullOrWhiteSpace(readWriteHosts) ?
    RedisConnectionHelp.Instance :
    RedisConnectionHelp.GetConnectionMultiplexer(readWriteHosts);
  }

#region 辅助方法

  private string AddSysCustomKey(string oldKey)
  {
   var prefixKey = CustomKey ?? RedisConnectionHelp.SysCustomKey;
   return prefixKey + oldKey;
  }

  private T Do<T>(Func<IDatabase, T> func)
  {
   var database = _conn.GetDatabase(DbNum);
   return func(database);
  }

  private string ConvertJson<T>(T value)
  {
   string result = value is string ? value.ToString() : JsonConvert.SerializeObject(value);
   return result;
  }

  private T ConvertObj<T>(RedisValue value)
  {
   return JsonConvert.DeserializeObject<T>(value);
  }

  private List<T> ConvetList<T>(RedisValue[] values)
  {
   List<T> result = new List<T>();
   foreach (var item in values)
   {
    var model = ConvertObj<T>(item);
    result.Add(model);
   }
   return result;
  }

  private RedisKey[] ConvertRedisKeys(List<string> redisKeys)
  {
   return redisKeys.Select(redisKey => (RedisKey)redisKey).ToArray();
  }

  #endregion 辅助方法

  #endregion 构造函数
}

其中CustomKey用来表示系统前缀，AddSysCustomKey方法对每个key都进行前缀的添加处理，这里推荐大家在命名redis的key的时候最好的加上前缀，并且使用：来分割前缀 ,这里在使用可视化工具查看的时候就比较好区分，比如我的的前缀是 Demo:test:（一般是系统名：业务名：）,然后你查看的时候你会发现整齐，好区分了很多

String类型的封装

#region String

  #region 同步方法

  /// <summary>
  /// 保存单个key value
  /// </summary>
  /// <param name="key">Redis Key</param>
  /// <param name="value">保存的值</param>
  /// <param name="expiry">过期时间</param>
  /// <returns></returns>
  public bool StringSet(string key, string value, TimeSpan? expiry = default(TimeSpan?))
  {
   key = AddSysCustomKey(key);
   return Do(db => db.StringSet(key, value, expiry));
  }

  /// <summary>
  /// 保存多个key value
  /// </summary>
  /// <param name="keyValues">键值对</param>
  /// <returns></returns>
  public bool StringSet(List<KeyValuePair<RedisKey, RedisValue>> keyValues)
  {
   List<KeyValuePair<RedisKey, RedisValue>> newkeyValues =
    keyValues.Select(p => new KeyValuePair<RedisKey, RedisValue>(AddSysCustomKey(p.Key), p.Value)).ToList();
   return Do(db => db.StringSet(newkeyValues.ToArray()));
  }

  /// <summary>
  /// 保存一个对象
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <param name="obj"></param>
  /// <param name="expiry"></param>
  /// <returns></returns>
  public bool StringSet<T>(string key, T obj, TimeSpan? expiry = default(TimeSpan?))
  {
   key = AddSysCustomKey(key);
   string json = ConvertJson(obj);
   return Do(db => db.StringSet(key, json, expiry));
  }

  /// <summary>
  /// 获取单个key的值
  /// </summary>
  /// <param name="key">Redis Key</param>
  /// <returns></returns>
  public string StringGet(string key)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.StringGet(key));
  }

  /// <summary>
  /// 获取多个Key
  /// </summary>
  /// <param name="listKey">Redis Key集合</param>
  /// <returns></returns>
  public RedisValue[] StringGet(List<string> listKey)
  {
   List<string> newKeys = listKey.Select(AddSysCustomKey).ToList();
   return Do(db => db.StringGet(ConvertRedisKeys(newKeys)));
  }

  /// <summary>
  /// 获取一个key的对象
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <returns></returns>
  public T StringGet<T>(string key)
  {
   key = AddSysCustomKey(key);
   return Do(db => ConvertObj<T>(db.StringGet(key)));
  }

  /// <summary>
  /// 为数字增长val
  /// </summary>
  /// <param name="key"></param>
  /// <param name="val">可以为负</param>
  /// <returns>增长后的值</returns>
  public double StringIncrement(string key, double val = 1)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.StringIncrement(key, val));
  }

  /// <summary>
  /// 为数字减少val
  /// </summary>
  /// <param name="key"></param>
  /// <param name="val">可以为负</param>
  /// <returns>减少后的值</returns>
  public double StringDecrement(string key, double val = 1)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.StringDecrement(key, val));
  }

  #endregion 同步方法

  #region 异步方法

  /// <summary>
  /// 保存单个key value
  /// </summary>
  /// <param name="key">Redis Key</param>
  /// <param name="value">保存的值</param>
  /// <param name="expiry">过期时间</param>
  /// <returns></returns>
  public async Task<bool> StringSetAsync(string key, string value, TimeSpan? expiry = default(TimeSpan?))
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.StringSetAsync(key, value, expiry));
  }

  /// <summary>
  /// 保存多个key value
  /// </summary>
  /// <param name="keyValues">键值对</param>
  /// <returns></returns>
  public async Task<bool> StringSetAsync(List<KeyValuePair<RedisKey, RedisValue>> keyValues)
  {
   List<KeyValuePair<RedisKey, RedisValue>> newkeyValues =
    keyValues.Select(p => new KeyValuePair<RedisKey, RedisValue>(AddSysCustomKey(p.Key), p.Value)).ToList();
   return await Do(db => db.StringSetAsync(newkeyValues.ToArray()));
  }

  /// <summary>
  /// 保存一个对象
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <param name="obj"></param>
  /// <param name="expiry"></param>
  /// <returns></returns>
  public async Task<bool> StringSetAsync<T>(string key, T obj, TimeSpan? expiry = default(TimeSpan?))
  {
   key = AddSysCustomKey(key);
   string json = ConvertJson(obj);
   return await Do(db => db.StringSetAsync(key, json, expiry));
  }

  /// <summary>
  /// 获取单个key的值
  /// </summary>
  /// <param name="key">Redis Key</param>
  /// <returns></returns>
  public async Task<string> StringGetAsync(string key)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.StringGetAsync(key));
  }

  /// <summary>
  /// 获取多个Key
  /// </summary>
  /// <param name="listKey">Redis Key集合</param>
  /// <returns></returns>
  public async Task<RedisValue[]> StringGetAsync(List<string> listKey)
  {
   List<string> newKeys = listKey.Select(AddSysCustomKey).ToList();
   return await Do(db => db.StringGetAsync(ConvertRedisKeys(newKeys)));
  }

  /// <summary>
  /// 获取一个key的对象
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <returns></returns>
  public async Task<T> StringGetAsync<T>(string key)
  {
   key = AddSysCustomKey(key);
   string result = await Do(db => db.StringGetAsync(key));
   return ConvertObj<T>(result);
  }

  /// <summary>
  /// 为数字增长val
  /// </summary>
  /// <param name="key"></param>
  /// <param name="val">可以为负</param>
  /// <returns>增长后的值</returns>
  public async Task<double> StringIncrementAsync(string key, double val = 1)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.StringIncrementAsync(key, val));
  }

  /// <summary>
  /// 为数字减少val
  /// </summary>
  /// <param name="key"></param>
  /// <param name="val">可以为负</param>
  /// <returns>减少后的值</returns>
  public async Task<double> StringDecrementAsync(string key, double val = 1)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.StringDecrementAsync(key, val));
  }

  #endregion 异步方法

  #endregion String

这里说一下，StackExchange.Redis 中对对象的存储是不自带序列化和反序列化的方法，所以在ConvertJson和ConvertObj里面我是使用了JsonConvert来操作，如果需要换成其他的序列化和序列化，直接修改这两个方面就好了，另外，StackExchange.Redis 相对于ServiceStack.Redis 来说提供了异步的方法，所以这里也同样封装了异步和同步的方法。

List类型的封装

#region List

  #region 同步方法

  /// <summary>
  /// 移除指定ListId的内部List的值
  /// </summary>
  /// <param name="key"></param>
  /// <param name="value"></param>
  public void ListRemove<T>(string key, T value)
  {
   key = AddSysCustomKey(key);
   Do(db => db.ListRemove(key, ConvertJson(value)));
  }

  /// <summary>
  /// 获取指定key的List
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public List<T> ListRange<T>(string key)
  {
   key = AddSysCustomKey(key);
   return Do(redis =>
   {
    var values = redis.ListRange(key);
    return ConvetList<T>(values);
   });
  }

  /// <summary>
  /// 入队
  /// </summary>
  /// <param name="key"></param>
  /// <param name="value"></param>
  public void ListRightPush<T>(string key, T value)
  {
   key = AddSysCustomKey(key);
   Do(db => db.ListRightPush(key, ConvertJson(value)));
  }

  /// <summary>
  /// 出队
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <returns></returns>
  public T ListRightPop<T>(string key)
  {
   key = AddSysCustomKey(key);
   return Do(db =>
    {
     var value = db.ListRightPop(key);
     return ConvertObj<T>(value);
    });
  }

  /// <summary>
  /// 入栈
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <param name="value"></param>
  public void ListLeftPush<T>(string key, T value)
  {
   key = AddSysCustomKey(key);
   Do(db => db.ListLeftPush(key, ConvertJson(value)));
  }

  /// <summary>
  /// 出栈
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <returns></returns>
  public T ListLeftPop<T>(string key)
  {
   key = AddSysCustomKey(key);
   return Do(db =>
   {
    var value = db.ListLeftPop(key);
    return ConvertObj<T>(value);
   });
  }

  /// <summary>
  /// 获取集合中的数量
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public long ListLength(string key)
  {
   key = AddSysCustomKey(key);
   return Do(redis => redis.ListLength(key));
  }

  #endregion 同步方法

  #region 异步方法

  /// <summary>
  /// 移除指定ListId的内部List的值
  /// </summary>
  /// <param name="key"></param>
  /// <param name="value"></param>
  public async Task<long> ListRemoveAsync<T>(string key, T value)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.ListRemoveAsync(key, ConvertJson(value)));
  }

  /// <summary>
  /// 获取指定key的List
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public async Task<List<T>> ListRangeAsync<T>(string key)
  {
   key = AddSysCustomKey(key);
   var values = await Do(redis => redis.ListRangeAsync(key));
   return ConvetList<T>(values);
  }

  /// <summary>
  /// 入队
  /// </summary>
  /// <param name="key"></param>
  /// <param name="value"></param>
  public async Task<long> ListRightPushAsync<T>(string key, T value)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.ListRightPushAsync(key, ConvertJson(value)));
  }

  /// <summary>
  /// 出队
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <returns></returns>
  public async Task<T> ListRightPopAsync<T>(string key)
  {
   key = AddSysCustomKey(key);
   var value = await Do(db => db.ListRightPopAsync(key));
   return ConvertObj<T>(value);
  }

  /// <summary>
  /// 入栈
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <param name="value"></param>
  public async Task<long> ListLeftPushAsync<T>(string key, T value)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.ListLeftPushAsync(key, ConvertJson(value)));
  }

  /// <summary>
  /// 出栈
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <returns></returns>
  public async Task<T> ListLeftPopAsync<T>(string key)
  {
   key = AddSysCustomKey(key);
   var value = await Do(db => db.ListLeftPopAsync(key));
   return ConvertObj<T>(value);
  }

  /// <summary>
  /// 获取集合中的数量
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public async Task<long> ListLengthAsync(string key)
  {
   key = AddSysCustomKey(key);
   return await Do(redis => redis.ListLengthAsync(key));
  }

  #endregion 异步方法

  #endregion List

Hash类型的封装

#region Hash

  #region 同步方法

  /// <summary>
  /// 判断某个数据是否已经被缓存
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <returns></returns>
  public bool HashExists(string key, string dataKey)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.HashExists(key, dataKey));
  }

  /// <summary>
  /// 存储数据到hash表
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <param name="t"></param>
  /// <returns></returns>
  public bool HashSet<T>(string key, string dataKey, T t)
  {
   key = AddSysCustomKey(key);
   return Do(db =>
   {
    string json = ConvertJson(t);
    return db.HashSet(key, dataKey, json);
   });
  }

  /// <summary>
  /// 移除hash中的某值
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <returns></returns>
  public bool HashDelete(string key, string dataKey)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.HashDelete(key, dataKey));
  }

  /// <summary>
  /// 移除hash中的多个值
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKeys"></param>
  /// <returns></returns>
  public long HashDelete(string key, List<RedisValue> dataKeys)
  {
   key = AddSysCustomKey(key);
   //List<RedisValue> dataKeys1 = new List<RedisValue>() {"1","2"};
   return Do(db => db.HashDelete(key, dataKeys.ToArray()));
  }

  /// <summary>
  /// 从hash表获取数据
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <returns></returns>
  public T HashGet<T>(string key, string dataKey)
  {
   key = AddSysCustomKey(key);
   return Do(db =>
   {
    string value = db.HashGet(key, dataKey);
    return ConvertObj<T>(value);
   });
  }

  /// <summary>
  /// 为数字增长val
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <param name="val">可以为负</param>
  /// <returns>增长后的值</returns>
  public double HashIncrement(string key, string dataKey, double val = 1)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.HashIncrement(key, dataKey, val));
  }

  /// <summary>
  /// 为数字减少val
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <param name="val">可以为负</param>
  /// <returns>减少后的值</returns>
  public double HashDecrement(string key, string dataKey, double val = 1)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.HashDecrement(key, dataKey, val));
  }

  /// <summary>
  /// 获取hashkey所有Redis key
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <returns></returns>
  public List<T> HashKeys<T>(string key)
  {
   key = AddSysCustomKey(key);
   return Do(db =>
   {
    RedisValue[] values = db.HashKeys(key);
    return ConvetList<T>(values);
   });
  }

  #endregion 同步方法

  #region 异步方法

  /// <summary>
  /// 判断某个数据是否已经被缓存
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <returns></returns>
  public async Task<bool> HashExistsAsync(string key, string dataKey)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.HashExistsAsync(key, dataKey));
  }

  /// <summary>
  /// 存储数据到hash表
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <param name="t"></param>
  /// <returns></returns>
  public async Task<bool> HashSetAsync<T>(string key, string dataKey, T t)
  {
   key = AddSysCustomKey(key);
   return await Do(db =>
   {
    string json = ConvertJson(t);
    return db.HashSetAsync(key, dataKey, json);
   });
  }

  /// <summary>
  /// 移除hash中的某值
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <returns></returns>
  public async Task<bool> HashDeleteAsync(string key, string dataKey)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.HashDeleteAsync(key, dataKey));
  }

  /// <summary>
  /// 移除hash中的多个值
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKeys"></param>
  /// <returns></returns>
  public async Task<long> HashDeleteAsync(string key, List<RedisValue> dataKeys)
  {
   key = AddSysCustomKey(key);
   //List<RedisValue> dataKeys1 = new List<RedisValue>() {"1","2"};
   return await Do(db => db.HashDeleteAsync(key, dataKeys.ToArray()));
  }

  /// <summary>
  /// 从hash表获取数据
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <returns></returns>
  public async Task<T> HashGeAsync<T>(string key, string dataKey)
  {
   key = AddSysCustomKey(key);
   string value = await Do(db => db.HashGetAsync(key, dataKey));
   return ConvertObj<T>(value);
  }

  /// <summary>
  /// 为数字增长val
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <param name="val">可以为负</param>
  /// <returns>增长后的值</returns>
  public async Task<double> HashIncrementAsync(string key, string dataKey, double val = 1)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.HashIncrementAsync(key, dataKey, val));
  }

  /// <summary>
  /// 为数字减少val
  /// </summary>
  /// <param name="key"></param>
  /// <param name="dataKey"></param>
  /// <param name="val">可以为负</param>
  /// <returns>减少后的值</returns>
  public async Task<double> HashDecrementAsync(string key, string dataKey, double val = 1)
  {
   key = AddSysCustomKey(key);
   return await Do(db => db.HashDecrementAsync(key, dataKey, val));
  }

  /// <summary>
  /// 获取hashkey所有Redis key
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="key"></param>
  /// <returns></returns>
  public async Task<List<T>> HashKeysAsync<T>(string key)
  {
   key = AddSysCustomKey(key);
   RedisValue[] values = await Do(db => db.HashKeysAsync(key));
   return ConvetList<T>(values);
  }

  #endregion 异步方法

  #endregion Hash

SortedSet 类型的封装

#region SortedSet 有序集合

  #region 同步方法

  /// <summary>
  /// 添加
  /// </summary>
  /// <param name="key"></param>
  /// <param name="value"></param>
  /// <param name="score"></param>
  public bool SortedSetAdd<T>(string key, T value, double score)
  {
   key = AddSysCustomKey(key);
   return Do(redis => redis.SortedSetAdd(key, ConvertJson<T>(value), score));
  }

  /// <summary>
  /// 删除
  /// </summary>
  /// <param name="key"></param>
  /// <param name="value"></param>
  public bool SortedSetRemove<T>(string key, T value)
  {
   key = AddSysCustomKey(key);
   return Do(redis => redis.SortedSetRemove(key, ConvertJson(value)));
  }

  /// <summary>
  /// 获取全部
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public List<T> SortedSetRangeByRank<T>(string key)
  {
   key = AddSysCustomKey(key);
   return Do(redis =>
   {
    var values = redis.SortedSetRangeByRank(key);
    return ConvetList<T>(values);
   });
  }

  /// <summary>
  /// 获取集合中的数量
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public long SortedSetLength(string key)
  {
   key = AddSysCustomKey(key);
   return Do(redis => redis.SortedSetLength(key));
  }

  #endregion 同步方法

  #region 异步方法

  /// <summary>
  /// 添加
  /// </summary>
  /// <param name="key"></param>
  /// <param name="value"></param>
  /// <param name="score"></param>
  public async Task<bool> SortedSetAddAsync<T>(string key, T value, double score)
  {
   key = AddSysCustomKey(key);
   return await Do(redis => redis.SortedSetAddAsync(key, ConvertJson<T>(value), score));
  }

  /// <summary>
  /// 删除
  /// </summary>
  /// <param name="key"></param>
  /// <param name="value"></param>
  public async Task<bool> SortedSetRemoveAsync<T>(string key, T value)
  {
   key = AddSysCustomKey(key);
   return await Do(redis => redis.SortedSetRemoveAsync(key, ConvertJson(value)));
  }

  /// <summary>
  /// 获取全部
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public async Task<List<T>> SortedSetRangeByRankAsync<T>(string key)
  {
   key = AddSysCustomKey(key);
   var values = await Do(redis => redis.SortedSetRangeByRankAsync(key));
   return ConvetList<T>(values);
  }

  /// <summary>
  /// 获取集合中的数量
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public async Task<long> SortedSetLengthAsync(string key)
  {
   key = AddSysCustomKey(key);
   return await Do(redis => redis.SortedSetLengthAsync(key));
  }

  #endregion 异步方法

  #endregion SortedSet 有序集合

key的管理

#region key

  /// <summary>
  /// 删除单个key
  /// </summary>
  /// <param name="key">redis key</param>
  /// <returns>是否删除成功</returns>
  public bool KeyDelete(string key)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.KeyDelete(key));
  }

  /// <summary>
  /// 删除多个key
  /// </summary>
  /// <param name="keys">rediskey</param>
  /// <returns>成功删除的个数</returns>
  public long KeyDelete(List<string> keys)
  {
   List<string> newKeys = keys.Select(AddSysCustomKey).ToList();
   return Do(db => db.KeyDelete(ConvertRedisKeys(newKeys)));
  }

  /// <summary>
  /// 判断key是否存储
  /// </summary>
  /// <param name="key">redis key</param>
  /// <returns></returns>
  public bool KeyExists(string key)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.KeyExists(key));
  }

  /// <summary>
  /// 重新命名key
  /// </summary>
  /// <param name="key">就的redis key</param>
  /// <param name="newKey">新的redis key</param>
  /// <returns></returns>
  public bool KeyRename(string key, string newKey)
  {
   key = AddSysCustomKey(key);
   return Do(db => db.KeyRename(key, newKey));
  }

  /// <summary>
  /// 设置Key的时间
  /// </summary>
  /// <param name="key">redis key</param>
  /// <param name="expiry"></param>
  /// <returns></returns>
  public bool KeyExpire(string key, TimeSpan? expiry = default(TimeSpan?))
  {
   key = AddSysCustomKey(key);
   return Do(db => db.KeyExpire(key, expiry));
  }

  #endregion key

发布和订阅

#region 发布订阅

  /// <summary>
  /// Redis发布订阅 订阅
  /// </summary>
  /// <param name="subChannel"></param>
  /// <param name="handler"></param>
  public void Subscribe(string subChannel, Action<RedisChannel, RedisValue> handler = null)
  {
   ISubscriber sub = _conn.GetSubscriber();
   sub.Subscribe(subChannel, (channel, message) =>
   {
    if (handler == null)
    {
     Console.WriteLine(subChannel + " 订阅收到消息：" + message);
    }
    else
    {
     handler(channel, message);
    }
   });
  }

  /// <summary>
  /// Redis发布订阅 发布
  /// </summary>
  /// <typeparam name="T"></typeparam>
  /// <param name="channel"></param>
  /// <param name="msg"></param>
  /// <returns></returns>
  public long Publish<T>(string channel, T msg)
  {
   ISubscriber sub = _conn.GetSubscriber();
   return sub.Publish(channel, ConvertJson(msg));
  }

  /// <summary>
  /// Redis发布订阅 取消订阅
  /// </summary>
  /// <param name="channel"></param>
  public void Unsubscribe(string channel)
  {
   ISubscriber sub = _conn.GetSubscriber();
   sub.Unsubscribe(channel);
  }

  /// <summary>
  /// Redis发布订阅 取消全部订阅
  /// </summary>
  public void UnsubscribeAll()
  {
   ISubscriber sub = _conn.GetSubscriber();
   sub.UnsubscribeAll();
  }

  #endregion 发布订阅

其他

#region 其他

  public ITransaction CreateTransaction()
  {
   return GetDatabase().CreateTransaction();
  }

  public IDatabase GetDatabase()
  {
   return _conn.GetDatabase(DbNum);
  }

  public IServer GetServer(string hostAndPort)
  {
   return _conn.GetServer(hostAndPort);
  }

  /// <summary>
  /// 设置前缀
  /// </summary>
  /// <param name="customKey"></param>
  public void SetSysCustomKey(string customKey)
  {
   CustomKey = customKey;
  }

  #endregion 其他

以上就是对StackExchange.Redis基本操作的通用封装，提供给大家学习参考，如果有哪里写错的，也希望能一起交流。

问题：

StackExchange.Redis没有提供Redis分布式锁的操作么？ServiceStack.Redis 提供了AcquireLock 的方法来操作，StackExchange.Redis 源码中只找到了LockTake的方法，并没有找到其他的方法了，如果有人使用过，还希望能提供下。

最后，附上源码地址：demo

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。

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