.net core3.1 Redis使用
1.下载客户端https://github.com/MSOpenTech/redis/releases。安装客户端https://www.runoob.com/redis/redis-install.html
2.参考https://www.cnblogs.com/LiChen19951127/p/10478153.html
3.自己运行
①Nuget安装 StackExchange.Redis
②redishelper
using System;
using System.Collections.Generic;
using Microsoft.Extensions.Logging;
using StackExchange.Redis;
using Newtonsoft.Json;
namespace WebApplication1
{
public class RedisHelperNetCore
{
//单例模式
public static RedisCommon Default { get { return new RedisCommon(); } }
public static RedisCommon One { get { return new RedisCommon(1, “127.0.0.1:6379”); } }
public static RedisCommon Two { get { return new RedisCommon(2, “127.0.0.1:6379”); } }
}
///
/// Redis操作类
/// 老版用的是ServiceStack.Redis。
/// Net Core使用StackExchange.Redis的nuget包
///
public class RedisCommon
{
//public static ILogger Log = UtilLogger.Log;//日志记录
//redis数据库连接字符串
private string _conn = AppConfigurtaionServices.Configuration[“RedisConfig:ReadWriteHosts”] ?? “127.0.0.1:6379”;
private int _db = 0;
//静态变量 保证各模块使用的是不同实例的相同链接
private static ConnectionMultiplexer connection;
public RedisCommon() { }
///
/// 构造函数
///
///
///
public RedisCommon(int db, string connectStr)
{
_conn = connectStr;
_db = db;
}
///
/// 缓存数据库，数据库连接
///
public ConnectionMultiplexer CacheConnection
{
get
{
try
{
if (connection == null || !connection.IsConnected)
{
connection = new Lazy(() => ConnectionMultiplexer.Connect(_conn)).Value;
}
}
catch (Exception ex)
{
//Log.LogError(“RedisHelper->CacheConnection 出错\r\n” + ex.ToString());
return null;
}
return connection;
}
}
///
/// 缓存数据库
///
public IDatabase CacheRedis => CacheConnection.GetDatabase(_db);
#region --KEY/VALUE存取--
///
/// 单条存值
///
/// key
/// The value.
/// true if XXXX, false otherwise.
/// 保存单个key value
///
/// Redis Key
/// 保存的值
/// 过期时间
///
/// 保存多个key value
///
/// key
/// [] arr)
{
return CacheRedis.StringSet(arr);
}
///
/// 批量存值
///
/// key
/// The value.
/// true if XXXX, false otherwise.[count];
for (int i = 0; i < count; i++)
{
keyValuePair[i] = new KeyValuePair(keysStr[i], valuesStr[i]);
}
return CacheRedis.StringSet(keyValuePair);
}
///
/// 保存一个对象
///
/// (string key, T obj, TimeSpan? expiry = default(TimeSpan?))
{
string json = JsonConvert.SerializeObject(obj);
return CacheRedis.StringSet(key, json, expiry);
}
///
/// 追加值
///
///
///
public void StringAppend(string key, string value)
{
////追加值，返回追加后长度
long appendlong = CacheRedis.StringAppend(key, value);
}
///
/// 获取单个key的值
///
/// Redis Key
///
/// 根据Key获取值
///
/// 键值
/// System.String.
public string StringGet(string key)
{
try
{
return CacheRedis.StringGet(key);
}
catch (Exception ex)
{
//Log.LogError("RedisHelper->StringGet 出错\r\n" + ex.ToString());
return null;
}
}
///
/// 获取多个Key
///
/// Redis Key集合
/// listKey)
{
return CacheRedis.StringGet(listKey.ToArray());
}
///
/// 批量获取值
///
public string[] StringGetMany(string[] keyStrs)
{
var count = keyStrs.Length;
var keys = new RedisKey[count];
var addrs = new string[count];
for (var i = 0; i < count; i++)
{
keys[i] = keyStrs[i];
}
try
{
var values = CacheRedis.StringGet(keys);
for (var i = 0; i < values.Length; i++)
{
addrs[i] = values[i];
}
return addrs;
}
catch (Exception ex)
{
//Log.LogError("RedisHelper->StringGetMany 出错\r\n" + ex.ToString());
return null;
}
}
///
/// 获取一个key的对象
///
/// (string key)
{
return JsonConvert.DeserializeObject(CacheRedis.StringGet(key));
}
#endregion
#region --删除设置过期--
///
/// 删除单个key
///
/// redis key
/// 是否删除成功
public bool KeyDelete(string key)
{
return CacheRedis.KeyDelete(key);
}
///
/// 删除多个key
///
/// rediskey
/// 成功删除的个数
public long KeyDelete(RedisKey[] keys)
{
return CacheRedis.KeyDelete(keys);
}
///
/// 判断key是否存储
///
/// redis key
///
/// 重新命名key
///
/// 就的redis key
/// 新的redis key
///
/// 删除hasekey
///
///
///
///
/// 移除hash中的某值
///
///
/// 设置缓存过期
///
///
///
public void SetExpire(string key, DateTime datetime)
{
CacheRedis.KeyExpire(key, datetime);
}
#endregion
}
}
③封装读取配置文件的类
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Configuration.Json;
public class AppConfigurtaionServices
{
public static IConfiguration Configuration { get; set; }
static AppConfigurtaionServices()
{
//ReloadOnChange = true 当appsettings.json被修改时重新加载
Configuration = new ConfigurationBuilder()
.Add(new JsonConfigurationSource { Path = “appsettings.json”, ReloadOnChange = true })
.Build();
}}
④appsetting.json配置
//redis分布式缓存
“RedisConfig”: {
//是否打开缓存1是0否
“IsOpenCache”: “0”,
“ReadWriteHosts”: “127.0.0.1:6379,password=123456”,
“ReadOnlyHosts”: “127.0.0.1:6379,password=123456”
}
⑤测试调用
public IActionResult Index()
{
#region --测试redis–
var a=RedisHelperNetCore.Default.StringSet(“redis”, “redis” + DateTime.Now, TimeSpan.FromSeconds(1000000));
var b = RedisHelperNetCore.Default.StringGet(“redis”);
//var c= RedisHelper.Default.KeyDelete(“redis”);
#endregion
return View();
}