text: const Queue = require('bull');
  // Create free tier on https://redislabs.com and assign redis://:password@hostname:port
  const pdfQueue = new Queue('pdf transcoding', process.env.BULL_REDIS_CONNECTION);
  
  pdfQueue.process(function(job, done) {
    job.progress(42);
    done();
    pdfQueue.close();
  });
  
  pdfQueue.add({ pdf: 'http://example.com/file.pdf' });
  