title: What's actually meaning of SQLite cache status output by dumpsys
body: <p>I'm really confused the below output which was generated by dumpsys:</p>
  
  <p><strong>DATABASES</strong></p>
  
  <pre><code>  pgsz     dbsz   Lookaside(b)          cache  Dbname
  
       1     3176            117   7663/1635/21  webviewCache.db
  
                                      2822/16/5  (pooled # 1) webviewCache.db
  </code></pre>
  
  <p>Why list three items in the cache column and what are their meanings?</p>
  
  <p>That's appreciate to get your comments.</p>
  
  <p>Thanks in advance.</p>