C#下的redis第一个例子

VS2010下的Redis缓存操作

最新推荐文章于 2025-10-10 14:58:11 发布

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本文介绍如何使用VS2010及C#进行Redis缓存操作，包括创建Redis操作类RedisCacheHelper，并实现缓存的添加、获取、删除等功能。通过示例演示了如何使用此类进行简单的缓存管理。

1、使用VS2010开发，首先下载C#下用到的redis的dll，免费版的，下载链接如下

https://download.youkuaiyun.com/download/chencaw/10472019

2、创建一个Redis操作的公用类RedisCacheHelper

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Text;
using System.Web;
//using ServiceStack.Common.Extensions;
using ServiceStack.Redis;
using ServiceStack.Logging;

namespace chenredis1.RedisHelper
{
class RedisCacheHelper
{
private static readonly PooledRedisClientManager pool = null;
private static readonly string[] redisHosts = null;
// public static int RedisMaxReadPool = int.Parse(ConfigurationManager.AppSettings["redis_max_read_pool"]);
// public static int RedisMaxWritePool = int.Parse(ConfigurationManager.AppSettings["redis_max_write_pool"]);
public static int RedisMaxReadPool = 3;
public static int RedisMaxWritePool = 1;
static RedisCacheHelper()
{
// var redisHostStr = ConfigurationManager.AppSettings["redis_server_session"];
var redisHostStr = "127.0.0.1:6379";

if (!string.IsNullOrEmpty(redisHostStr))
{
redisHosts = redisHostStr.Split(',');

if (redisHosts.Length > 0)
{
pool = new PooledRedisClientManager(redisHosts, redisHosts,
new RedisClientManagerConfig()
{
MaxWritePoolSize = RedisMaxWritePool,
MaxReadPoolSize = RedisMaxReadPool,
AutoStart = true
});
}
}
}
public static void Add<T>(string key, T value, DateTime expiry)
{
if (value == null)
{
return;
}

if (expiry <= DateTime.Now)
{
Remove(key);

return;
}

try
{
if (pool != null)
{
using (var r = pool.GetClient())
{
if (r != null)
{
r.SendTimeout = 1000;
r.Set(key, value, expiry - DateTime.Now);
}
}
}
}
catch (Exception ex)
{
string msg = string.Format("{0}:{1}发生异常!{2}", "cache", "存储", key);
}

}

public static void Add<T>(string key, T value, TimeSpan slidingExpiration)
{
if (value == null)
{
return;
}

if (slidingExpiration.TotalSeconds <= 0)
{
Remove(key);

return;
}

try
{
if (pool != null)
{
using (var r = pool.GetClient())
{
if (r != null)
{
r.SendTimeout = 1000;
r.Set(key, value, slidingExpiration);
}
}
}
}
catch (Exception ex)
{
string msg = string.Format("{0}:{1}发生异常!{2}", "cache", "存储", key);
}

}

public static T Get<T>(string key)
{
if (string.IsNullOrEmpty(key))
{
return default(T);
}

T obj = default(T);

try
{
if (pool != null)
{
using (var r = pool.GetClient())
{
if (r != null)
{
r.SendTimeout = 1000;
obj = r.Get<T>(key);
}
}
}
}
catch (Exception ex)
{
string msg = string.Format("{0}:{1}发生异常!{2}", "cache", "获取", key);
}

return obj;
}

public static void Remove(string key)
{
try
{
if (pool != null)
{
using (var r = pool.GetClient())
{
if (r != null)
{
r.SendTimeout = 1000;
r.Remove(key);
}
}
}
}
catch (Exception ex)
{
string msg = string.Format("{0}:{1}发生异常!{2}", "cache", "删除", key);
}

}

public static bool Exists(string key)
{
try
{
if (pool != null)
{
using (var r = pool.GetClient())
{
if (r != null)
{
r.SendTimeout = 1000;
return r.ContainsKey(key);
}
}
}
}
catch (Exception ex)
{
string msg = string.Format("{0}:{1}发生异常!{2}", "cache", "是否存在", key);
}

return false;
}
}

}

4测试程序调用

class Program

{

        static void Main(string[] args)

{

            Console.WriteLine("Redis写入缓存：zhong");

            RedisCacheHelper.Add("zhong", "zhongzhongzhong", DateTime.Now.AddDays(1));

            Console.WriteLine("Redis获取缓存：zhong");

            string str3 = RedisCacheHelper.Get<string>("zhong");

            Console.WriteLine(str3);

            Console.WriteLine("Redis获取缓存：nihao");

            string str = RedisCacheHelper.Get<string>("nihao");

            Console.WriteLine(str);

            Console.WriteLine("Redis获取缓存：wei");

            string str1 = RedisCacheHelper.Get<string>("wei");

            Console.WriteLine(str1);

            Console.ReadKey();

}

}

5参考的blog

https://blog.youkuaiyun.com/zhulongxi/article/details/73604508