cache-simple.js

let cache = {}; // just a simple js object
// cache is just some space in RAM (memory)
function getStudentDetailsFromDatabase() { // AWS - US east
    return {
        name: 'John',
    } // response time is n seconds
}
function main() {
    if(cache["result"]) {
        return cache["result"];
    }else {
        cache["result"] = getStudentDetailsFromDatabase();
        return cache["result"];
    }
}
for(let i =0; i < 10000000; i++) {
    main();
}