device_registry.js

var util = require('util');
var zetta = require('zetta');

var DeviceRegistry = module.exports = function(path) {
  zetta.DeviceRegistry.call(this, { path: path, collection: 'devices' });
};
util.inherits(DeviceRegistry, zetta.DeviceRegistry);

peer_registry.js

var util = require('util');
var zetta = require('zetta');

var PeerRegistry = module.exports = function(path) {
  zetta.PeerRegistry.call(this, { path: path, collection: 'peers' });
};
util.inherits(PeerRegistry, zetta.PeerRegistry);

server.js

var zetta = require('zetta');
var DeviceRegistry = require('./device_registry');
var PeerRegistry = require('./peer_registry');

zetta({ peerRegistry: new PeerRegistry('./mypeers'), registry: new DeviceRegistry('./mydevices') })
  .listen(0);