blog-real-time-word-cloud

server.js

app.get('/api/channel/:channel/words', async function (req, res) {
  const channel = `#${req.params.channel}`;
  const args = [channel, '0', '50', 'WITHSCORES'];
  const scores = [];

  const range = await redisClient.zrevrangeAsync(args);

  for (let i = 0; i < range.length; i += 2) {
    scores.push({ 
      key: range[i], 
      value: parseInt(range[i + 1]),
    });
  }

  res.json({ channel, scores });
});