docs: function batch(ops) {
    var batch = [];
  
    if (!ops.length) {
      return bluebird.resolve();
    }
  
    for (let i = 0; i < ops.length; i++) {
      let { key, value } = ops[i];
  
      if (shouldProcess(key)) {
        batch.push(key);
        batch.push(value);
      }
    }
  
    if (!batch.length) {
      return bluebird.resolve();
    }
  
    return module.exports.client.hmsetAsync(REDIS_HASH, batch);
  }