title: Why DiskLruImageCache blocks I/O
body: <p><code>DiskLruImageCache</code></p>
  
  <p>The <code>DiskLruImageCache</code> is a wrapper for the <code>DiskLruCache</code> with a bitmap-centered implementation. It adds and retrieves the bitmaps from the <code>DiskLruCache</code>, and handles the cache instantiation. A disk cache may block I/O.</p>
  
  <p>I was reading this article <a href="https://www.captechconsulting.com/blog/raymond-robinson/google-io-2013-volley-image-cache-tutorial" rel="nofollow">from this blog</a> </p>
  
  <p>Why do they not mention that disk cache may block I/O?</p>