Yes Storm is still under active development. Yahoo, Baidu and other big players continue to use Storm.<p>To be honest Storm&#x27;s API is richer. Our approach however was to make stream processing available to all developers. It doesn&#x27;t get simpler than four callbacks:<p><pre><code>  void init(CtxPtr context);
  void destroy();
  void processRecord(CtxPtr context, FrameworkRecord &amp;&amp;r);
  void processTimer(CtxPtr context, const string &amp;key, int time);
  Metadata metadata();</code></pre>