title: Pop (LPOP, RPOP) multiple keys with one command
body: <p>I have multiple small queues inside Redis and I want to poll them at a fixed period of time. At the moment I have multiple keys in Redis where each stores a list of strings.</p>
  <p>Is there a way to run pop operations (LPOP, RPOP) on multiple keys at the same time?</p>
  <pre><code>Let's suppose that have 3 keys:
  key1 -&gt; [&quot;a1&quot;,&quot;b1&quot;,&quot;c1&quot;]
  key2 -&gt; [&quot;a2&quot;,&quot;b2&quot;,&quot;c2&quot;]
  key3 -&gt; [&quot;a3&quot;,&quot;b3&quot;,&quot;c3&quot;]
  </code></pre>
  <p>Can I run an <code>RPOP</code> operation (or something similar) in such a way that I'll pop &quot;c1&quot;,&quot;c2&quot; and &quot;c3&quot;.</p>
  <hr />
  <p>If it's possible, can I run the same command without specifying the keys? like to run RPOP for all the keys that are stored in Redis.</p>