前言：要使用redis，首先電腦要先下載安裝redis，下載安裝可以看我上一篇文章 https://blog.csdn.net/weixin_44442366/article/details/124205310
我們用StackExchange.Redis包在.NET Core中使用Redis實現緩存，如果想可視化查看redis緩存里面的數據可以安裝RedisDesktopManager。

一、在NuGet搜索安裝StackExchange.Redis包

二、在appsettings.json文件里面添加Redis相關配置信息：

"Redis": {"Default": {"Connection": "127.0.0.1:6379,password=888", //redis連接地址，端口號,密碼"InstanceName": "local", //實例名"DefaultDB": "8", //Db8數據庫}

三、創建Redis幫助類

創建RedisHelper類，代碼如下：

using StackExchange.Redis; using System.Collections.Concurrent;namespace RedisDemo.redis {public class RedisHelper : IDisposable{//連接字符串private string _connectionString;//實例名稱private string _instanceName;//默認數據庫private int _defaultDB;private ConcurrentDictionary<string, ConnectionMultiplexer> _connections;public RedisHelper(string connectionString, string instanceName, int defaultDB = 0){_connectionString = connectionString;_instanceName = instanceName;_defaultDB = defaultDB;_connections = new ConcurrentDictionary<string, ConnectionMultiplexer>();}/// <summary>/// 獲取ConnectionMultiplexer/// </summary>/// <returns></returns>private ConnectionMultiplexer GetConnect(){return _connections.GetOrAdd(_instanceName, p => ConnectionMultiplexer.Connect(_connectionString));}/// <summary>/// 獲取數據庫/// </summary>/// <param name="configName"></param>/// <param name="db">默認為0：優先代碼的db配置，其次config中的配置</param>/// <returns></returns>public IDatabase GetDatabase(){return GetConnect().GetDatabase(_defaultDB);}public IServer GetServer(string configName = null, int endPointsIndex = 0){var confOption = ConfigurationOptions.Parse(_connectionString);return GetConnect().GetServer(confOption.EndPoints[endPointsIndex]);}public ISubscriber GetSubscriber(string configName = null){return GetConnect().GetSubscriber();}public void Dispose(){if (_connections != null && _connections.Count > 0){foreach (var item in _connections.Values){item.Close();}}}} }

四、添加服務依賴項

在Program.cs類添加服務依賴

//redis緩存 var section =builder.Configuration.GetSection("Redis:Default"); //連接字符串 string _connectionString = section.GetSection("Connection").Value; //實例名稱 string _instanceName = section.GetSection("InstanceName").Value; //默認數據庫 int _defaultDB = int.Parse(section.GetSection("DefaultDB").Value ?? "0"); builder.Services.AddSingleton(new RedisHelper(_connectionString, _instanceName, _defaultDB));

五、測試使用， 在控制器接口中使用

using Microsoft.AspNetCore.Mvc; using RedisDemo.redis; using StackExchange.Redis;namespace RedisDemo.Controllers {[Route("api/[controller]")][ApiController]public class RedisTestController : ControllerBase{private readonly IDatabase _redis;public RedisTestController(RedisHelper client){_redis = client.GetDatabase();}[HttpGet("test")]public string Get(){// 往Redis里面存入數據_redis.StringSet("Name", "hehe");// 從Redis里面取數據string name = _redis.StringGet("Name");return name;}} }

api測試返回成功

用命令查看redis數據庫正常存入，select 8 進入第8個庫，keys *： 列出所有key，get Name：查看Name鍵的值

用可視化工具RedisDesktopManager查看

總結

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