话不多说直接上代码：
// set添加单个元素 stopwatch.Start(); var isok = RedisCacheHelper.Instance.SetAdd("setkey", "10"); stopwatch.Stop(); Console.WriteLine("set添加单个元素消耗时间：" + stopwatch.ElapsedMilliseconds.ToString()); // set添加多个元素 sting类型集合 List<string> strlist = new List<string>() { "1", "2", "A", "B", "你", "好" }; stopwatch.Start(); var getlong = RedisCacheHelper.Instance.SetAdd("setkeylist", strlist); stopwatch.Stop(); Console.WriteLine("set添加多个元素消耗时间：" + stopwatch.ElapsedMilliseconds.ToString()); Console.WriteLine("返回集合长度：" + getlong); //从数据库获取10条数据 stopwatch.Start(); var getlist = TestRedis.GetOrderFormAll(10); stopwatch.Stop(); Console.WriteLine("从数据库获取10条数据消耗时间：" + stopwatch.ElapsedMilliseconds.ToString()); // set添加多个对象集合 序列化 stopwatch.Start(); var getvalue = RedisCacheHelper.Instance.SetAddList("setkeyobjlist", getlist); stopwatch.Stop(); Console.WriteLine("set添加多个对象集合消耗时间：" + stopwatch.ElapsedMilliseconds.ToString()); Console.WriteLine("返回集合长度：" + getvalue);
// 获取set集合的长度 var getleng = RedisCacheHelper.Instance.SetLength("setkeylist"); Console.WriteLine("获取 setkeylist 的长度：" + getleng); var getobjleng = RedisCacheHelper.Instance.SetLength("setkeyobjlist"); Console.WriteLine("获取 setkeyobjlist 的长度：" + getobjleng); // 检查元素是否属于Set集合 var getisA = RedisCacheHelper.Instance.ExistsInSet("setkeylist", "A"); var getisC = RedisCacheHelper.Instance.ExistsInSet("setkeylist", "C"); Console.WriteLine("检查 A 是否属于setkeylist集合：" + getisA); Console.WriteLine("检查 C 是否属于setkeylist集合：" + getisC); // 根据key获取所有Set元素 stopwatch.Start(); var getlist = RedisCacheHelper.Instance.GetMembers("setkeylist"); stopwatch.Stop(); Console.WriteLine("获取所有Set元素消耗时间：" + stopwatch.ElapsedMilliseconds.ToString()); foreach (var item in getlist) { Console.WriteLine(item); } // 根据key获取所有对象元素 反序列化 stopwatch.Start(); var getobjlist = RedisCacheHelper.Instance.GetAllMembers("setkeyobjlist"); stopwatch.Stop(); Console.WriteLine("获取所有对象集合消耗时间：" + stopwatch.ElapsedMilliseconds.ToString()); foreach (var item in getobjlist) { Console.WriteLine("打印Area: " + item.Area); }
//求 交集、差集、并集 string[] arry2 = { "setkeylist", "setkeylist2" }; var d1 = RedisCacheHelper.Instance.GetCombines(SetOperation.Union, arry2.ToList()); //并集 var d2 = RedisCacheHelper.Instance.GetCombines(SetOperation.Intersect, arry2.ToList()); //交集 var d3 = RedisCacheHelper.Instance.GetCombines(SetOperation.Difference, arry2.ToList()); //差集 foreach (var item in d1) { Console.WriteLine("setkeylist和setkeylist2的并集有：" + item); } foreach (var item in d2) { Console.WriteLine("setkeylist和setkeylist2的交集有：" + item); } foreach (var item in d3) { Console.WriteLine("setkeylist和setkeylist2的差集有：" + item); }
// 根据key随机获取Set中的1个元素 循环获取会得到重复内容， for (int i = 0; i < 5; i++) { stopwatch.Start(); var getone = RedisCacheHelper.Instance.GetRandomMember("setkeyobjlist"); stopwatch.Stop(); //Console.WriteLine("根据key随机获取Set中的1个元素消耗时间：" + stopwatch.ElapsedMilliseconds.ToString()); Console.WriteLine("打印: " + getone); } // 根据key随机获取Set中的n个元素 一次性获取，无重复值 stopwatch.Start(); var getobjlist = RedisCacheHelper.Instance.GetRandomMembers("setkeyobjlist", 5); stopwatch.Stop(); Console.WriteLine("根据key随机获取Set中的n个元素消耗时间：" + stopwatch.ElapsedMilliseconds.ToString()); foreach (var item in getobjlist) { Console.WriteLine("打印: " + item); }
最后附上Helper帮助类
////// set添加单个元素 /// 具有唯一性 比如在线人数/点赞人数/收藏人数等 /// /// /// /// /// public bool SetAdd(string key, string value, TimeSpan? span = null, int db = -1) { try { _db = GetDatabase(db); //设置过期时间 if (span != null) { this.KeyExpire(key, span); } return _db.SetAdd(key, value); } catch (Exception ex) { return false; } } /// /// set添加多个元素集合 /// /// /// /// /// public long SetAdd(string key, List<string> arryList, int db = -1) { try { _db = GetDatabase(db); RedisValue[] valueList = arryList.Select(u => (RedisValue)u).ToArray(); return _db.SetAdd(key, valueList); } catch (Exception) { return 0; } } /// /// set添加多个对象集合 序列化 /// /// /// /// /// public long SetAddList (string key, IEnumerable list, int db = -1) where T : class { try { _db = GetDatabase(db); List listRedisValue = new List (); foreach (var item in list) { string json = JsonConvert.SerializeObject(item); listRedisValue.Add(json); } return _db.SetAdd(key, listRedisValue.ToArray()); } catch (Exception) { return 0; } } /// /// 获取set集合的长度 /// /// /// /// public long SetLength(string key, int db = -1) { try { _db = GetDatabase(db); return _db.SetLength(key); } catch (Exception) { return 0; } } /// /// 检查元素是否属于Set集合 /// /// /// /// /// public bool ExistsInSet(string key, string value, int db = -1) { try { _db = GetDatabase(db); return _db.SetContains(key, value); } catch (Exception) { return false; } } /// /// 根据key获取所有Set元素 /// /// /// /// public IEnumerable<string> GetMembers(string redisKey, int db = -1) { try { _db = GetDatabase(db); var rValue = _db.SetMembers(redisKey); return rValue.Select(ob => ob.ToString()); } catch (Exception) { throw; } } /// /// 根据key获取所有Set对象集合 反序列化 /// /// /// /// /// public List GetAllMembers (string redisKey, int db = -1) where T : class { List result = new List (); try { _db = GetDatabase(db); var arr = _db.SetMembers(redisKey); foreach (var item in arr) { if (!item.IsNullOrEmpty) { var t = JsonConvert.DeserializeObject (item); if (t != null) { result.Add(t); } } } } catch (Exception) { return null; } return result; } /// /// 根据key随机获取Set中的1个元素 不删除该元素 /// 可应用于中奖类的案例 /// /// /// /// public string GetRandomMember(string redisKey, int db = -1) { try { _db = GetDatabase(db); var rValue = _db.SetRandomMember(redisKey); return rValue.ToString(); } catch (Exception) { throw; } } /// /// 根据key随机获取Set中的n个元素 不删除该元素 /// 可应用于中奖类的案例 /// /// /// /// /// public IEnumerable<string> GetRandomMembers(string redisKey, long count, int db = -1) { try { _db = GetDatabase(db); var rValue = _db.SetRandomMembers(redisKey, count); return rValue.Select(ob => ob.ToString()); } catch (Exception) { throw; } } /// /// 随机删除指定key集合中的一个值，并返回这些值 /// 可应用于抽奖类的案例 /// /// /// /// public string GetRandomRemovePop(string redisKey, int db = -1) { try { _db = GetDatabase(db); var rValue = _db.SetPop(redisKey); return rValue.ToString(); } catch (Exception) { throw; } } /// /// 随机删除指定key集合中的n个值，并返回这些值 /// 可应用于抽奖类的案例 /// /// /// /// /// public IEnumerable<string> GetRandomRemovePops(string redisKey, long count, int db = -1) { try { _db = GetDatabase(db); var rValue = _db.SetPop(redisKey, count); return rValue.Select(ob => ob.ToString()); } catch (Exception) { throw; } } /// /// 返回指定rediskey集合的交集、差集、并集 /// 只能在同一个库内查询，跨库则不行 /// /// /// /// /// public IEnumerable<string> GetCombines(SetOperation operation, List<string> keyList, int db = -1) { try { _db = GetDatabase(db); RedisKey[] valueList = keyList.Select(u => (RedisKey)u).ToArray(); var rValue = _db.SetCombine(operation, valueList); return rValue.Select(ob => ob.ToString()); } catch (Exception) { throw; } }