title: REST web services call can be cached to improve performance
body: <p>As I was going through this list of <a href="http://javarevisited.blogspot.com/2012/01/rest-web-services-framework-interview.html#ixzz2xuwkvKYQ" rel="nofollow">interview questions</a> (look at question #2) , I cam across this concept. I am not familiar with this concept. </p>
  
  <p>I looked through some documentation but could not find anything. Can someone explains what this means ? Also.. if possible.. how this can be applied to Android. </p>