.NET 6中如何使用Redis

1、安装redis

Redis在windows平台上不受官方支持，所以想要在window安装Redis就必须去下载windows提供的安装包。安装地址：https://github.com/tporadowski/redis/releases

2、在NueGet安装包

3、在appsettings.json文件里面添加Redis相关配置信息

"Redis": {"Connection": "127.0.0.1:6379,password=foobared", //连接地址，端口号，密码"InstanceName": "local", //实例名称"DefaultDB": "8" //db8数据库}

redis的密码，可在安装目录下找到redis.windows.conf文件打开查看

4、创建RedisHelper类，代码如下：

using StackExchange.Redis;
using System.Collections.Concurrent;namespace WebApi.Redis
{public class RedisHelper : IDisposable{//连接字符串private string _connectionString;//实例名称private string _instanceName;//默认数据库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>/// 获取ConnectionMultiplexer/// </summary>/// <returns></returns>private ConnectionMultiplexer GetConnect(){return _connections.GetOrAdd(_instanceName, p => ConnectionMultiplexer.Connect(_connectionString));}/// <summary>/// 获取数据库/// </summary>/// <param name="configName"></param>/// <param name="db">默认为0：优先代码的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();}}}}
}

5、在program.cs中添加依赖

//redis缓存
var section = builder.Configuration.GetSection("Redis");
//连接字符串
string _connectionString = section.GetSection("Connection").Value;
//实例名称
string _instanceName = section.GetSection("InstanceName").Value;
//默认数据库 
int _defaultDB = int.Parse(section.GetSection("DefaultDB").Value ?? "0");
builder.Services.AddSingleton(new RedisHelper(_connectionString, _instanceName, _defaultDB));

6、控制器中可用直接注入依赖使用

using Microsoft.AspNetCore.Mvc;
using StackExchange.Redis;
using WebApi.Redis;namespace WebApi.Controllers
{[Route("api/[controller]/[action]")][ApiController]public class TestController : ControllerBase{private readonly IDatabase _redis;public TestController(RedisHelper redis) {_redis = redis.GetDatabase();}[HttpGet]public Person GetPerson(){string? name = _redis.StringGet("name");return new Person(name, 18);}[HttpPost]public string SavePerson(string name){_redis.StringSet("name",name);return "保存成功！" + name;}}
}