title: Filter data in redis
body: <p>I create record in redis using</p>
  
  <pre><code>var data = { 'userid': 'user1' ,  'message': 'test message' };   
  redisClient.hmset('messages:' + 1 , data);
  
  var data1 = { 'userid': 'user2' ,  'message': 'test message' };   
  redisClient.hmset('messages:' + 2 , data1);
  </code></pre>
  
  <p>I want to get data from messages by userid = user2.. how to do this.</p>