code: function _setRedisItem (config, blocks) {
    let key = _buildRedisKey(config.redisKey, config.language)
    return config.redis.hmsetAsync(key, blocks)
      .then(function () {
        return config.redis.expireAsync(key, config.redisExpire)
      })
      .then(function () {
        return blocks
      })
  }
docs: Wrap Redis set call in a Promise.
  @param config
  @param blocks
  @returns {Promise}
  @private