Sample Azure Function calling the Redis cache we configured

run.csx

using System.Net;
using StackExchange.Redis;

public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
{
    log.Info("C# HTTP trigger function processed a request.");

    // **** REDIS CODE STARTS HERE
    var connString = System.Configuration.ConfigurationManager.ConnectionStrings["mycats"].ConnectionString;
    var redis = ConnectionMultiplexer.Connect(connString);

    // TODO - insert your code here to manipulate data in your Redis cache


    // parse query parameter
    string name = req.GetQueryNameValuePairs()
        .FirstOrDefault(q => string.Compare(q.Key, "name", true) == 0)
        .Value;

    // Get request body
    dynamic data = await req.Content.ReadAsAsync<object>();

    // Set name to query string or body data
    name = name ?? data?.name;

    return name == null
        ? req.CreateResponse(HttpStatusCode.BadRequest, "Please pass a name on the query string or in the request body")
        : req.CreateResponse(HttpStatusCode.OK, "Hello " + name);
}

In VS2017 with the functional app, it's throwing exception:

Error Message: No connection is available to service this operation: SADD 1b4490c0-55f4-400c-b4f6-869ddb2664eb; Could not load file or assembly 'System.Buffers, Version=4.0.2.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified.; IOCP: (Busy=0,Free=1000,Min=8,Max=1000), WORKER: (Busy=2,Free=1021,Min=8,Max=1023), Local-CPU: n/a

Stack: No connection is available to service this operation: SADD 1b4490c0-55f4-400c-b4f6-869ddb2664eb; Could not load file or assembly 'System.Buffers, Version=4.0.2.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified.; IOCP: (Busy=0,Free=1000,Min=8,Max=1000), WORKER: (Busy=2,Free=1021,Min=8,Max=1023), Local-CPU: n/a

Inner Exception level 1
Message: SocketFailure on timetrialdev.redis.cache.windows.net:6379/Subscription, Initializing, last: NONE, origin: ConnectedAsync, outstanding: 0, last-read: 0s ago, last-write: 0s ago, unanswered-write: 892907s ago, keep-alive: 60s, state: Connecting, mgr: 10 of 10 available, last-heartbeat: never, global: 0s ago, v: 2.0.505.18761

Stack:

Inner Exception level 2
Message: Could not load file or assembly 'System.Buffers, Version=4.0.2.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified.

Stack:
at System.IO.Pipelines.PipeCompletion.AddCallback(Action2 callback, Object state) at System.IO.Pipelines.Pipe.OnReaderCompleted(Action2 callback, Object state)
at System.IO.Pipelines.Pipe.DefaultPipeWriter.OnReaderCompleted(Action`2 callback, Object state)
at Pipelines.Sockets.Unofficial.SocketConnection..ctor(Socket socket, PipeOptions sendPipeOptions, PipeOptions receivePipeOptions, SocketConnectionOptions socketConnectionOptions, String name)
at StackExchange.Redis.PhysicalConnection.d__98.MoveNext()