上一篇講述了安裝redis《Redis總結（一）Redis安裝》，同時也大致介紹了redis的優勢和應用場景。本篇著重講解.NET中如何使用redis和C#。

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　　Redis官網提供了很多開源的C#客戶端。例如，Nhiredis ，ServiceStack.Redis ，StackExchange.Redis等。其中ServiceStack.Redis應該算是比較流行的。它提供了一整套從Redis數據結構都強類型對象轉換的機制并將對象json序列化。所以這里只介紹ServiceStack.Redis，它也是目前我們產品中所使用的客戶端。?

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　　ServiceStack.Redis地址：https://github.com/ServiceStack/ServiceStack.Redis?

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　　1.?建立一個控制臺應用程序，并引用以下ServiceStack.Redis相關的四個類庫。或者通過Nuget進行安裝Redis常用組件ServiceStack.Redis。 下載示例代碼。

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　　2. 創建一個Redis操作的公用類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 Weiz.Redis.RedisTest {public 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"]);static RedisCacheHelper(){var redisHostStr = ConfigurationManager.AppSettings["redis_server_session"];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}發生異常!{2}", "cache", "存儲", 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}發生異常!{2}", "cache", "存儲", 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}發生異常!{2}", "cache", "獲取", 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}發生異常!{2}", "cache", "刪除", 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}發生異常!{2}", "cache", "是否存在", key);}return false;}} }

　　說明：RedisCacheHelper 使用的是客戶端鏈接池模式，這樣的存取效率應該是最高的。同時也更方便的支持讀寫分離，均衡負載。

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　　3. 配置文件

<!-- redis Start --><add key="SessionExpireMinutes" value="180" /><add key="redis_server_session" value="127.0.0.1:6379" /><add key="redis_max_read_pool" value="3" /><add key="redis_max_write_pool" value="1" /><!--redis end-->

　

　　4. 測試程序調用

class Program{static void Main(string[] args){Console.WriteLine("Redis寫入緩存：zhong");RedisCacheHelper.Add("zhong", "zhongzhongzhong", DateTime.Now.AddDays(1));Console.WriteLine("Redis獲取緩存：zhong");string str3 = RedisCacheHelper.Get<string>("zhong");Console.WriteLine(str3);Console.WriteLine("Redis獲取緩存：nihao");string str = RedisCacheHelper.Get<string>("nihao");Console.WriteLine(str);Console.WriteLine("Redis獲取緩存：wei");string str1 = RedisCacheHelper.Get<string>("wei");Console.WriteLine(str1);Console.ReadKey();}}

　　

　　5. 輸出結果

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轉載于:https://www.cnblogs.com/zhangweizhong/p/4972348.html

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