DB connection

mongo.config.js

import nconf from 'nconf';
import mongoose from 'mongoose';
import Promise from 'bluebird';
import logger from './winston';
import _s from 'underscore.string';

import models from '../models/index';

mongoose.Promise = Promise;

mongoose.connect(nconf.get('mongo'), function () {
  logger.info('MongoDB connect success');
});

mongoose.connection.on('error', function () {
  logger.error('MongoDB Connection Error. Make sure MongoDB is running.');
});

export default mongoose;

redis.config.js

import _ from 'underscore';
import redis from 'redis';
import nconf from 'nconf';
import Promise from 'bluebird';
import logger from '../config/winston';

Promise.promisifyAll(redis.RedisClient.prototype);
Promise.promisifyAll(redis.Multi.prototype);

const redisConfig = nconf.get('redis');
const clientCache = {};

export function getRedisClient(dbName) {
  const config = redisConfig[dbName];
  let db = clientCache[dbName];
  if (!db) {
    db = redis.createClient(config.port, config.host);

    db.setMaxListeners(0);
    if (config.index) {
      db.select(config.index);
    }
    clientCache[dbName] = db;
    logger.info('Connect to redis success', 'db#' + config.index, 'name:' + dbName);
  }
  return db;
}