RedisUtil(未完，持续更新中....)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Newtonsoft.Json;
using StackExchange.Redis;

namespace Common.Util
{
  public  class RedisUtil
    {
        #region init
        private static object lockForRedis = new object();//连接实例锁
        private static ConnectionMultiplexer Instance;  //连接实例
        /// <summary>
        /// 默认开始就给连接
        /// </summary>
        static RedisUtil()
        {
           GetConn();   //--初始就实例化
        }
        /// <summary>
        /// 获取连接
        /// </summary>
        /// <returns></returns>
        private static ConnectionMultiplexer GetConn()
        {
            if (Instance == null)
            {
                lock (lockForRedis)
                {
                    if (Instance == null || !Instance.IsConnected)
                    {
                        Instance = ConnectionMultiplexer.Connect(GetConfig());

                    }
                }
            }
            return Instance;
        }
        /// <summary>
        /// 获取配置
        /// </summary>
        /// <returns></returns>
        private static ConfigurationOptions GetConfig()
        {
            ConfigurationOptions options = new ConfigurationOptions();

            options.EndPoints.Add("localhost",6379);
            options.ConnectTimeout = 6000;  //超时时间设置(默认5000)
            options.ConnectRetry = 1;       //连接重试周期
            return options;
        }
        #endregion
        #region String
        /// <summary>
        /// 设置String值
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <param name="timeSpan"></param>
        /// <param name="dbIndex"></param>
        /// <returns></returns>
        public static bool StringSet<T>(string key,T value,TimeSpan? timeSpan=null,int dbIndex=0)
        {
            try
            {
                var db = GetConn().GetDatabase(dbIndex);
                return db.StringSet(key, JsonConvert.SerializeObject(value),timeSpan);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
                return false;
            }

        }
        /// <summary>
        /// 获取String值
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="dbIndex"></param>
        /// <returns></returns>
        public static T StringGet<T>(string key,int dbIndex=0)
        {
            try
            {
                var db = GetConn().GetDatabase(dbIndex);
                return JsonConvert.DeserializeObject<T>(db.StringGet(key));
            }
            catch(Exception ex)
            {
                Console.WriteLine(ex);
                return default(T);
            }

        }
        /// <summary>
        /// 存入递增类型的键值
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <param name="dbIndex"></param>
        /// <returns></returns>
        public static double StringIncrement(string key, double value, int dbIndex = 0)
        {
            try
            {
                var db = GetConn().GetDatabase(dbIndex);
                return db.StringIncrement(key,value);
            }
            catch (Exception ex)
            {

                return 0;
            }
        }
        /// <summary>
        /// 存入递减类型的键值
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <param name="dbIndex"></param>
        /// <returns></returns>
        public static double StringDecrement(string key,double value,int dbIndex = 0)
        {
            try
            {
                var db = GetConn().GetDatabase(dbIndex);
                return db.StringDecrement(key, value);
            }
            catch (Exception ex)
            {

                return 0;
            }
        }
        #endregion
    }
}