如何将 aws redis 与 c# 连接

Question

how to use c# to connection aws redis?

I create aws redis done and create linux host to conntection redis is successed,

but when I use c# code to connection, I get failed.

private static Lazy<ConnectionMultiplexer> lazyConnection = new Lazy<ConnectionMultiplexer>(() =>
    {
        return ConnectionMultiplexer.Connect("test.qzgpeh.ng.0001.use2.cache.amazonaws.com:6379,abortConnect=false");
    });

    public static ConnectionMultiplexer Connection
    {
        get
        {
            return lazyConnection.Value;
        }
    }

Error Message

No connection is active/available to service this operation: GET hello; UnableToConnect on test.qzgpeh.ng.0001.use2.cache.amazonaws.com:6379/Interactive, Initializing/NotStarted, last: NONE, origin: BeginConnectAsync, outstanding: 0, last-read: 5s ago, last-write: 5s ago, keep-alive: 60s, state: Connecting, mgr: 10 of 10 available, last-heartbeat: never, global: 5s ago, v: 2.1.58.34321, mc: 1/1/0, mgr: 10 of 10 available, clientName: HAUSER, IOCP: (Busy=0,Free=1000,Min=12,Max=1000), WORKER: (Busy=0,Free=32767,Min=12,Max=32767), v: 2.1.58.34321

how I can to fix it?

Answer 1

Posting if someone facing a similar issue.

I was trying to access Redis data from the Elastic Beanstalk.Net application and facing a similar issue.

In my case, it was an issue from a security group. I followed the below steps

1. Create my VPC and Subnet and Security Group
2. Create and deploy an application in EBS.
3. Create a security group (for Redis) and allow connection from EBS Security group
4. Create Redis in same VPC and Security group (step 3 security group)
5. Able to access Redis from.Net application

Redis Security Group Inbound Rule

.NET Core Sample Code

public class PrivacyModel : PageModel
{
    private readonly ILogger<PrivacyModel> _logger;
    private readonly IDatabase cache;
    private static Lazy<ConnectionMultiplexer> lazyConnection = new Lazy<ConnectionMultiplexer>(() =>
    {
        return ConnectionMultiplexer.Connect("******-redis-cache.yq8meb.0001.aps1.cache.amazonaws.com:6379,abortConnect=false");
    });

    public static ConnectionMultiplexer Connection
    {
        get
        {
            return lazyConnection.Value;
        }
    }

    public PrivacyModel(ILogger<PrivacyModel> logger)
    {
        _logger = logger;
        this.cache = Connection.GetDatabase();
    }

    [BindProperty]
    public string StartTime { get; set; }
    public void OnGet()
    {
        StartTime = this.cache.StringGet("StartTime");
        if (string.IsNullOrWhiteSpace(StartTime))
        {
            StartTime = DateTime.Now.ToString();
            this.cache.StringSet("StartTime", StartTime);
        }
    }
}