title: Auto save server architecture
body: <p>I want to save a lengthy form's inputs at the server. But I don't think making db calls on each auto-save action is the best approach to go for. </p>
  
  <p>What would constitute as a good approach to solve this? </p>
  
  <p>Another problem is that I have 3 app servers. So in memory cache wouldn't work. </p>
  
  <p>I was thinking keeping the data in redis and updating it on every call and finally updating the db. But since I have 3 servers how do I make sure the calls are in queue? </p>
  
  <p>Can anyone help with the architecture? </p>