title: Vaadin consuming REST and performance
body: <p>I have one question about how to construct app with vaadin and rest to gain good performace and scalability. I want to make rest api as a business layer and vaadin as ui for web. Ive made this decision cause my app will be also available as standalone version and on mobile os (ios and android). For me this idea is good if we are speaking about scalability but what about performance. Lets take about 5 thousand concurrent users for example. </p>
  
  <p>I want to know general data about performance and will it be good for a lot of concurrent users. Only vaadin is hard to gain good performance with a lot of concurrent users (cause anyway almost all the code is running on the server). And if we also add rest api for any vaadin operation inside im scared that i will gain fatal combo. </p>
  
  <p>Of course vaadin and rest api are located on the same server. </p>
  
  <p>What do you think about it? Thanks a lot for answers.</p>