Redis缓存服务搭建及实现数据读写 - Eric.Chen

发现博客园中好多大牛在介绍自己的开源项目是很少用到缓存，比如Memcached、Redis、mongodb等，今天得空抽时间把Redis缓存研究了一下，写下来总结一下，跟大家一起分享 一下。由于小弟水平有限又是第一次接触Redis，有些的不对的地方欢迎指出纠正。

1、  下载安装Redis

下载地址： https://github.com/MSOpenTech/Redis 。

2、  安装Redis

在下载的文件中找到bin并打开。

• redis-server.exe：服务程序(目前我们只用到这一个)
• redis-check-dump.exe：本地数据库检查
• redis-check-aof.exe：更新日志检查
• redis-benchmark.exe：性能测试，用以模拟同时由N个客户端发送M个 SETs/GETs 查询 (类似于 Apache 的ab 工具).

Redis有很多配置参数，这里就不介绍了，有兴趣的朋友可以到网上查查。

双击redis-server.exe或者在命令窗口中输入D:\redis-2.6\redis-server.exe即可启动Redis服务。

注意 端口号：Port：6379 在我们的程序中会用到该端口号。

3、  数据读、写、删测试，并实现list存数。

首先引用下面四个DLL文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using ServiceStack.Redis;
using ServiceStack.Text;
using ServiceStack.Redis.Generic;

namespace RedisStudy
{
    public class RedisHelper:IDisposable
    {
        public RedisClient Redis = new RedisClient("127.0.0.1", 6379);
        //缓存池
        PooledRedisClientManager prcm = new PooledRedisClientManager();

        //默认缓存过期时间单位秒
        public int secondsTimeOut = 30 * 60;

        /// <summary>
        /// 缓冲池
        /// </summary>
        /// <param name="readWriteHosts"></param>
        /// <param name="readOnlyHosts"></param>
        /// <returns></returns>
        public static PooledRedisClientManager CreateManager(
         string[] readWriteHosts, string[] readOnlyHosts)
        {
            return new PooledRedisClientManager(readWriteHosts, readOnlyHosts,
                new RedisClientManagerConfig
                {
                    MaxWritePoolSize = readWriteHosts.Length * 5,
                    MaxReadPoolSize = readOnlyHosts.Length * 5,
                    AutoStart = true,
                });// { RedisClientFactory = (IRedisClientFactory)RedisCacheClientFactory.Instance.CreateRedisClient("127.0.0.1", 6379) };
        }
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="OpenPooledRedis">是否开启缓冲池</param>
        public RedisHelper(bool OpenPooledRedis=false)
        {

            if (OpenPooledRedis)
            {
                prcm = CreateManager(new string[] { "127.0.0.1:6379" }, new string[] { "127.0.0.1:6379" });
                Redis = prcm.GetClient() as RedisClient;
            }
        }

        #region Key/Value存储
        /// <summary>
        /// 设置缓存
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key">缓存建</param>
        /// <param name="t">缓存值</param>
        /// <param name="timeout">过期时间，单位秒,-1：不过期，0：默认过期时间</param>
        /// <returns></returns>
        public bool Set<T>(string key, T t, int timeout = 0)
        {
            if (timeout >= 0)
            {
                if (timeout > 0)
                {
                    secondsTimeOut = timeout;
                }
                Redis.Expire(key, secondsTimeOut);
            }

            return Redis.Add<T>(key, t);
        }
        /// <summary>
        /// 获取
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public T Get<T>(string key)
        {
            return Redis.Get<T>(key);
        }
        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public bool Remove(string key)
        {
            return Redis.Remove(key);
        }

        public bool Add<T>(string key, T t, int timeout)
        {
            if (timeout >= 0)
            {
                if (timeout > 0)
                {
                    secondsTimeOut = timeout;
                }
                Redis.Expire(key, secondsTimeOut);
            }
            return Redis.Add<T>(key, t);
        }
        #endregion

        #region 链表操作
        /// <summary>
        /// 根据IEnumerable数据添加链表
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="listId"></param>
        /// <param name="values"></param>
        /// <param name="timeout"></param>
        public void AddList<T>(string listId, IEnumerable<T> values, int timeout = 0)
        {
            Redis.Expire(listId,60);
            IRedisTypedClient<T> iredisClient = Redis.As<T>();
            if (timeout >= 0)
            {
                if (timeout > 0)
                {
                    secondsTimeOut = timeout;
                }
                Redis.Expire(listId, secondsTimeOut);
            }
            var redisList = iredisClient.Lists[listId];
            redisList.AddRange(values);
            iredisClient.Save();
        }
        /// <summary>
        /// 添加单个实体到链表中
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="listId"></param>
        /// <param name="Item"></param>
        /// <param name="timeout"></param>
        public void AddEntityToList<T>(string listId, T Item, int timeout = 0)
        {
            IRedisTypedClient<T> iredisClient = Redis.As<T>();
            if (timeout >= 0)
            {
                if (timeout > 0)
                {
                    secondsTimeOut = timeout;
                }
                Redis.Expire(listId, secondsTimeOut);
            }
            var redisList = iredisClient.Lists[listId];
            redisList.Add(Item);
            iredisClient.Save();
        }
        /// <summary>
        /// 获取链表
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="listId"></param>
        /// <returns></returns>
        public IEnumerable<T> GetList<T>(string listId)
        {
            IRedisTypedClient<T> iredisClient = Redis.As<T>();
            return iredisClient.Lists[listId];
        }
        /// <summary>
        /// 在链表中删除单个实体
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="listId"></param>
        /// <param name="t"></param>
        public void RemoveEntityFromList<T>(string listId, T t)
        {
            IRedisTypedClient<T> iredisClient = Redis.As<T>();
            var redisList = iredisClient.Lists[listId];
            redisList.RemoveValue(t);
            iredisClient.Save();
        }
        /// <summary>
        /// 根据lambada表达式删除符合条件的实体
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="listId"></param>
        /// <param name="func"></param>
        public void RemoveEntityFromList<T>(string listId, Func<T,bool> func)
        {
            using (IRedisTypedClient<T> iredisClient = Redis.As<T>())
            {
                var redisList = iredisClient.Lists[listId];
                T value = redisList.Where(func).FirstOrDefault();
                redisList.RemoveValue(value);
                iredisClient.Save();
            }
        }
        #endregion
        //释放资源
        public void Dispose()
        {
            if (Redis != null)
            {
                Redis.Dispose();
                Redis = null;
            }
            GC.Collect();

        }
    }
}

4、  测试

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;

namespace RedisStudy
{
    public class User
    {
        public string Name { get; set; }
        public int Id { get; set; }
    }

    class Program
    {
        static RedisHelper redisHelper = new RedisHelper(true);

        static void Main(string[] args)
        {
            User u = new User() { Name = "eric1", Id = 1 };
            redisHelper.Set<User>("user", u);//设置缓存
            u=redisHelper.Get<User>("user");
            Console.WriteLine(u.Name);

            List<User> list = new List<User>()
            {
                new User(){Name="eric1",Id=1},
                 new User(){Name="eric2",Id=2}
            };

            redisHelper.Remove("list1");//删除缓存
            redisHelper.AddList<User>("list1", list);//添加缓存链表
            redisHelper.AddEntityToList<User>("list1", new User() { Name = "eric3",Id=3 });
            list = redisHelper.GetList<User>("list1").ToList();
            Console.WriteLine(list.Count);

            redisHelper.RemoveEntityFromList<User>("list1", list[0]);
            redisHelper.RemoveEntityFromList<User>("list1", it => it.Id == 2);
            list = redisHelper.GetList<User>("list1").ToList();
            Console.WriteLine(list.Count);

            redisHelper.Dispose();
            Console.ReadLine();

        }

    }
}