How to locally loadbalance threadsafe [Answered]

public class MyClass
{
  List<string> _endpoints;
  int _indexCounter = 0;
  public MyClass(List<string> endpoints)
  {
    _endpoints = endpoints;    
  }
  
  public Task SendRequest()
  {
    var endpoint = _endpoints[_indexCounter];
    indexCounter = _indexCounter < _endpoints.Length-1 ? _indexCounter+1 : 0;
    
    await client.Request(endpoint);
  }
}