code: function requestIdMiddleware (req, res, next) {
      // get unique id object
      var uniqueId = randomUniqueId()
      // add data to req
      req.requestId = uniqueId.id
      req.requestCreateTime = uniqueId.timestamp
      // continue
      next()
  }
docs: @function requestIdMiddleware
  
  express middleware to add requestId and requestCreateTime to the req object
  
  @param {object} req
  @param {object} res
  @param {function} next