整理下.net core的redis使用 可以分布式
Nuget安装 StackExchange.Redis
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(, "127.0.0.1:6379"); } }
public static RedisCommon Two { get { return new RedisCommon(, "127.0.0.1:6379"); } }
}
/// <summary>
/// Redis操作类
/// 老版用的是ServiceStack.Redis。
/// Net Core使用StackExchange.Redis的nuget包
/// </summary>
public class RedisCommon
{
//public static ILogger Log = UtilLogger<RedisCommon>.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 = ;
//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() { }
/// <summary>
/// 构造函数
/// </summary>
/// <param name="db"></param>
/// <param name="connectStr"></param>
public RedisCommon(int db, string connectStr)
{
_conn = connectStr;
_db = db;
}
/// <summary>
/// 缓存数据库，数据库连接
/// </summary>
public ConnectionMultiplexer CacheConnection
{
get
{
try
{
if (connection == null || !connection.IsConnected)
{
connection = new Lazy<ConnectionMultiplexer>(() => ConnectionMultiplexer.Connect(_conn)).Value;
}
}
catch (Exception ex)
{
//Log.LogError("RedisHelper->CacheConnection 出错\r\n" + ex.ToString());
return null;
}
return connection;
}
}
/// <summary>
/// 缓存数据库
/// </summary>
public IDatabase CacheRedis => CacheConnection.GetDatabase(_db); #region --KEY/VALUE存取--
/// <summary>
/// 单条存值
/// </summary>
/// <param name="key">key</param>
/// <param name="value">The value.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public bool StringSet(string key, string value)
{
return CacheRedis.StringSet(key, value);
}
/// <summary>
/// 保存单个key value
/// </summary>
/// <param name="key">Redis Key</param>
/// <param name="value">保存的值</param>
/// <param name="expiry">过期时间</param>
/// <returns></returns>
public bool StringSet(string key, string value, TimeSpan? expiry = default(TimeSpan?))
{
return CacheRedis.StringSet(key, value, expiry);
}
/// <summary>
/// 保存多个key value
/// </summary>
/// <param name="arr">key</param>
/// <returns></returns>
public bool StringSet(KeyValuePair<RedisKey, RedisValue>[] arr)
{
return CacheRedis.StringSet(arr);
}
/// <summary>
/// 批量存值
/// </summary>
/// <param name="keysStr">key</param>
/// <param name="valuesStr">The value.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public bool StringSetMany(string[] keysStr, string[] valuesStr)
{
var count = keysStr.Length;
var keyValuePair = new KeyValuePair<RedisKey, RedisValue>[count];
for (int i = ; i < count; i++)
{
keyValuePair[i] = new KeyValuePair<RedisKey, RedisValue>(keysStr[i], valuesStr[i]);
} return CacheRedis.StringSet(keyValuePair);
} /// <summary>
/// 保存一个对象
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="obj"></param>
/// <returns></returns>
public bool SetStringKey<T>(string key, T obj, TimeSpan? expiry = default(TimeSpan?))
{
string json = JsonConvert.SerializeObject(obj);
return CacheRedis.StringSet(key, json, expiry);
}
/// <summary>
/// 追加值
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
public void StringAppend(string key, string value)
{
////追加值，返回追加后长度
long appendlong = CacheRedis.StringAppend(key, value);
} /// <summary>
/// 获取单个key的值
/// </summary>
/// <param name="key">Redis Key</param>
/// <returns></returns>
public RedisValue GetStringKey(string key)
{
return CacheRedis.StringGet(key);
}
/// <summary>
/// 根据Key获取值
/// </summary>
/// <param name="key">键值</param>
/// <returns>System.String.</returns>
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;
}
} /// <summary>
/// 获取多个Key
/// </summary>
/// <param name="listKey">Redis Key集合</param>
/// <returns></returns>
public RedisValue[] GetStringKey(List<RedisKey> listKey)
{
return CacheRedis.StringGet(listKey.ToArray());
}
/// <summary>
/// 批量获取值
/// </summary>
public string[] StringGetMany(string[] keyStrs)
{
var count = keyStrs.Length;
var keys = new RedisKey[count];
var addrs = new string[count]; for (var i = ; i < count; i++)
{
keys[i] = keyStrs[i];
}
try
{ var values = CacheRedis.StringGet(keys);
for (var i = ; 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;
}
}
/// <summary>
/// 获取一个key的对象
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
public T GetStringKey<T>(string key)
{
return JsonConvert.DeserializeObject<T>(CacheRedis.StringGet(key));
} #endregion #region --删除设置过期--
/// <summary>
/// 删除单个key
/// </summary>
/// <param name="key">redis key</param>
/// <returns>是否删除成功</returns>
public bool KeyDelete(string key)
{
return CacheRedis.KeyDelete(key);
}
/// <summary>
/// 删除多个key
/// </summary>
/// <param name="keys">rediskey</param>
/// <returns>成功删除的个数</returns>
public long KeyDelete(RedisKey[] keys)
{
return CacheRedis.KeyDelete(keys);
}
/// <summary>
/// 判断key是否存储
/// </summary>
/// <param name="key">redis key</param>
/// <returns></returns>
public bool KeyExists(string key)
{
return CacheRedis.KeyExists(key);
}
/// <summary>
/// 重新命名key
/// </summary>
/// <param name="key">就的redis key</param>
/// <param name="newKey">新的redis key</param>
/// <returns></returns>
public bool KeyRename(string key, string newKey)
{
return CacheRedis.KeyRename(key, newKey);
}
/// <summary>
/// 删除hasekey
/// </summary>
/// <param name="key"></param>
/// <param name="hashField"></param>
/// <returns></returns>
public bool HaseDelete(RedisKey key, RedisValue hashField)
{
return CacheRedis.HashDelete(key, hashField);
}
/// <summary>
/// 移除hash中的某值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="dataKey"></param>
/// <returns></returns>
public bool HashRemove(string key, string dataKey)
{
return CacheRedis.HashDelete(key, dataKey);
}
/// <summary>
/// 设置缓存过期
/// </summary>
/// <param name="key"></param>
/// <param name="datetime"></param>
public void SetExpire(string key, DateTime datetime)
{
CacheRedis.KeyExpire(key, datetime);
}
#endregion }
}
appsetting.json配置
//redis分布式缓存
"RedisConfig": {
//是否打开缓存1是0否
"IsOpenCache": "",
"ReadWriteHosts": "127.0.0.1:6379,password=123456",
"ReadOnlyHosts": "127.0.0.1:6379,password=123456"
}
测试
public IActionResult Index()
{
#region --测试redis--
var a=RedisHelperNetCore.Default.StringSet("redis", "redis" + DateTime.Now, TimeSpan.FromSeconds());
var b = RedisHelperNetCore.Default.StringGet("redis");
//var c= RedisHelper.Default.KeyDelete("redis");
#endregion
return View();
}