<table style="width: 50%;">
  <caption>Small reads</caption>
  <tr>
    <td><tt>datastore.Get</tt></td>
    <td>O(20ms)</td>
  </tr>
  <tr>
    <td><tt>memcache.Get</tt></td>
    <td>O(1ms)</td>
  </tr>
  <tr>
    <td><tt>RAM</tt></td>
    <td>O(1µs)</td>
  </tr>
</table>