我们需要添加一个Redis包：Microsoft.Extensions.Caching.Redis，这是官方的
1.在appsettings.json添加配置,如下图：
说明：
CacheProvider： ConnectionString --- Redis连接
InstanceName ---Redis实例名称
2.在startup添加redis服务，如下图
3.缓存接口 ICacheService
public interface ICacheService
???{
???????/// <summary>
???????/// 获取缓存
???????/// </summary>
???????/// <param name="key">缓存key</param>
???????/// <returns></returns>
???????string Get(string key);
???????/// <summary>
???????///
???????/// </summary>
???????/// <param name="key"></param>
???????/// <returns></returns>
???????string GetString(string key);
???????/// <summary>
???????///
???????/// </summary>
???????/// <param name="key"></param>
???????/// <param name="value"></param>
???????void AddString(string key, string value);
???????/// <summary>
???????/// 添加缓存
???????/// </summary>
???????/// <param name="key">缓存key</param>
???????/// <param name="value">缓存值</param>
???????/// <param name="ExpirationTime">绝对过期时间(分钟)</param>
???????void Add(string key, string value, int ExpirationTime = 20);
???????/// <summary>
???????/// 移除缓存
???????/// </summary>
???????/// <param name="key"></param>
???????void Remove(string key);
???????/// <summary>
???????/// 更新缓存
???????/// </summary>
???????/// <param name="key"></param>
???????/// <param name="value"></param>
???????/// <param name="ExpirationTime"></param>
???????void Replace(string key, string value, int ExpirationTime = 20);
4.实现接口 ICacheService
public class RedisCacheService:ICacheService
???{
???????private RedisCache _redisCache = null;
???????public RedisCacheService(RedisCacheOptions options)
???????{
???????????_redisCache = new RedisCache(options);
???????}
???????/// <summary>
???????/// 获取缓存
???????/// </summary>
???????/// <param name="key">缓存key</param>
???????/// <returns></returns>
???????public string Get(string key)
???????{
???????????try
???????????{
???????????????if (!string.IsNullOrEmpty(key))
???????????????{
???????????????????return Encoding.UTF8.GetString(_redisCache.Get(key));
???????????????}
???????????????else
???????????????{
???????????????????return string.Empty;
???????????????}
???????????}
???????????catch
???????????{
???????????????return null;
???????????}
???????}
???????/// <summary>
???????/// 添加缓存
???????/// </summary>
???????/// <param name="key">缓存key</param>
???????/// <param name="value">缓存值</param>
???????/// <param name="ExpirationTime">绝对过期时间(分钟)</param>
???????public void Add(string key,string value,int ExpirationTime=20)
???????{
???????????if (!string.IsNullOrEmpty(key))
???????????{
???????????????_redisCache.Set(key, Encoding.UTF8.GetBytes(value), new DistributedCacheEntryOptions()
???????????????{
???????????????????AbsoluteExpiration = DateTimeOffset.Now.AddMinutes(ExpirationTime)
???????????????});
???????????}
???????}
???????public void AddString(string key, string value)
???????{
???????????_redisCache.SetString(key,value);
???????}
???????public string GetString(string key)
???????{
???????????return _redisCache.GetString(key);
???????}
???????/// <summary>
???????/// 移除缓存
???????/// </summary>
???????/// <param name="key">缓存key</param>
???????public void Remove(string key)
???????{
???????????if (!string.IsNullOrEmpty(key))
???????????{
???????????????_redisCache.Remove(key);
???????????}
???????}
???????/// <summary>
???????/// 更新缓存
???????/// </summary>
???????/// <param name="key">缓存key</param>
???????/// <param name="value">缓存值</param>
???????/// <param name="ExpirationTime"></param>
???????public void Replace(string key, string value, int ExpirationTime = 20)
???????{
???????????if (!string.IsNullOrEmpty(key))
???????????{
???????????????_redisCache.Remove(key);
???????????????_redisCache.Set(key, Encoding.UTF8.GetBytes(value), new DistributedCacheEntryOptions()
???????????????{
???????????????????AbsoluteExpiration = DateTimeOffset.Now.AddMinutes(ExpirationTime)
???????????????});
???????????}
???????}
???}
.netcore 使用redis
原文地址：https://www.cnblogs.com/zmaiwxl/p/8855950.html