title: Reading multiple Hashes from Redis in one call
body: <p>I want to search for a key with highest value from multiple hashes in Redis. My keys are of this format - </p>
  
  <pre><code>emp:1, emp:2,...emp:n
  </code></pre>
  
  <p>Each having values in this format -</p>
  
  <pre><code>1. name ABC
  2. salary 1234
  3. age 23
  </code></pre>
  
  <p>I want to find an oldest employee from these Hashes. From what I have read about Redis there is no way to read multiple hashes in one call. Which means I need to iterate through all the emp keys and call <code>HGETALL</code> on each to get the desired result (I do have a set where all the emp ids are stored).</p>
  
  <p>Is there a way I can minimize the number of hits to get this working?</p>