title: Effective subscription to data feeds
body: <p>How to effectively implement subscription mechanism in G-Wan? Suppose, I want to make g-wan aggregate data from various tickers and farther process it. And, obviously, every feed provides the data in its unique format.</p>
  
  <p>The straightforward way would be to create connections and subscribe to data in the <strong>init()</strong> function of the connection handler, then parse source info from the responses and dispatch data from the <strong>main()</strong> function to dedicated queues. But this approach doesn't seem to make any use of the effective task scheduling engine of G-Wan. So, may be a dedicated software would solve the problem faster?</p>
  
  <p>Another approach would be creating dedicated <em>servlets</em> for every subscription. For that, in the <strong>main()</strong> func of the connection handler, I would need rewriting <em>headers</em> and including names of corresponding <em>servlets</em>. In this case I would employ the whole g-wan machinery. But doesn't the rewriting headers negate all performance advantage of g-wan?</p>