当identityServer4收到令牌时，如何添加redis？

services.AddDistributedRedisCache(options =>
{
    options.Configuration = "localhost"; // Redis服务器的连接字符串
    options.InstanceName = "IdentityServer"; // Redis实例的名称
});

services.AddIdentityServer()
    .AddOperationalStore(options =>
    {
        options.ConfigureDbContext = builder =>
            builder.UseSqlServer(connectionString); // 使用SQL Server作为令牌存储的备份
        options.EnableTokenCleanup = true;
        options.TokenCleanupInterval = 3600; // 令牌清理的时间间隔（以秒为单位）
    })
    .AddRedisCaching(options =>
    {
        options.RedisConnectionString = "localhost"; // Redis服务器的连接字符串
        options.KeyPrefix = "IdentityServer"; // 用于区分不同应用程序的键前缀
    });

private readonly IDistributedCache _cache;

public MyClass(IDistributedCache cache)
{
    _cache = cache;
}

public async Task<string> GetCachedData(string key)
{
    var cachedData = await _cache.GetStringAsync(key);
    if (cachedData == null)
    {
        // 从其他数据源获取数据
        // ...
        // 将数据写入缓存
        await _cache.SetStringAsync(key, data);
        return data;
    }
    return cachedData;
}