Sample function call to redis

function.js

const { getCachedDataByKey, setDataToCache } = require('../../redis');

const checkUser = async (user_id, item) => {
  let user_access = await getCachedDataByKey("item_access_" + item + "_" + user_id);
  
  if (!user_access) {
    // get the data from database for user_id for item and assign to user_access
  
    setDataToCache("item_access_" + item + "_" + user_id, user_access);
  }

  return user_access;
}