title: Picasso image caching in recylceview
body: <p>I am using Picasso with recylerview. Picasso is populating the imageview from url as:</p>
  
  <p>Picasso.get().url("url").center().fit().into(ivImageview)</p>
  
  <p>However as I am scrolling up an down, I noticed that the image is blank then it shows the picture (meaning that It is downloading the image everytime).</p>
  
  <p>Shouldn't Picasso be caching the image and reusing it? Is there something I need to enable?
  Thank you</p>