title: Concurrency between many machines running the same web app on the server side
body: <p>This is a pretty open question. I was wondering: how can you handle concurrency if you have a web application that is hosted on many computers on the server side? For example, how can you manage a simple stack if you have an ASP .NET application running on different machines with each one having its own memory? Is there something I'm missing?</p>
  
  <p>Thanks</p>