fetch.js

function fetch_orders(exchange_url,redis_key){
  u = url.parse(exchange_url)
  console.log("LOS - " + redis_key);

  var options = {
    host: u.hostname,
    path: u.path,
    agent: false,
    headers: {
      'User-Agent': 'Mozilla/4.0 (compatible; MtGox node.js client)',
      'Content-type': 'application/x-www-form-urlencoded'
    }
  };


  http.get(options, function(res) {
    console.log("Got response: " + res.statusCode);
    res.setEncoding('utf8');

    var buffer = '';

    res.on("data", function(chunk) { 
      buffer.push(chunk);
    });

    res.on('end', function(){
      client.set(redis_key, buffer.toString());
      //client.expire(redis_key,15);
    });
  }).on('error', function(e) {
    console.log("Got error: " + e.message);
  });
  setTimeout((function() { fetch_orders(exchange_url,redis_key); }), 10000);
};