title: Get complete Map from Redis if a key contains a String
body: <p>I am able to add and get a particular user object from Redis I am adding object like this:</p>
  <pre><code> private static final String USER_PREFIX = &quot;:USER:&quot;;
   public void addUserToRedis(String serverName,User user) {
      redisTemplate.opsForHash().put(serverName + USER_PREFIX + user.getId(),  
     Integer.toString(user.getId()),user);    
      }
  </code></pre>
  <p>If a userId is 100 I am able to get by key: <strong>SERVER1:USER:100</strong> <br>
  Now I want to retrieve all Users as <code>Map&lt;String,List&lt;User&gt;&gt;</code> , <br>
  For example, get all users by this key <strong>SERVER1:USER:</strong>  <br>Is it possible ? Or I need to modify my <strong>addUserToRedis</strong> method? Please suggest me.</p>