code: function cacheQuery () {
      // debug
      debug('view:id:record:get', this.idCacheKeys, this.ids)
      // attempt to get from cache
      return this.cache.redis.mgetAsync(this.idCacheKeys)
      // check result
      .then(cached => this.cacheQueryResult(cached))
  }
docs: @function cacheQuery
  
  @returns {Promise}