Example of auto discovery for aws elasticache

getCluster.js

const Memcached = require('memcached');

const configClient = new Memcached('xyz123.cfg.cache.amazonaws.com:11211');

configClient.command(configGetCluster);

function configGetCluster() {
  return {
    command: 'config get cluster',
    callback: handleClusterResponse
  };
}

function handleClusterResponse(err, response) {
  const cacheNodes = getNodes(response);

  console.log('Discovered nodes: ', cacheNodes);

  // ... Do stuff ...
  const client = new Memcached(cacheNodes);

  client.set('qwerty', 'blahonga', 60, (err) => {
    client.get('qwerty', (err, data) => {
      console.log('Response: ', err || data);
    });
  });
  // ...

  configClient.end();
}

function getNodes(response) {

  function parseNode(node) {
    const parts = node.split('|');
    const hostName = parts[0];
    const port = parts[2];

    return `${hostName}:${port}`;
  }

  const lines = response.split(/\r?\n/);
  const unparsedNodes = lines[1].split(' ');

  return unparsedNodes.map(parseNode);
}