Implementation of a simple cache system using NodeJS

With No Cache

If we look in the browser on the server with end point having no-cache then it will take 3 seconds to load (since we used setTimeout to load the page with no cache in 3 seconds)

If you reload this page again it will take 3 seconds again to load the page

With cache

The first time we go to the end point with-cache, it takes 3 seconds to load the page.

But, when we refresh the page, it loads instantly. That is because as soon as we loaded the page first time, we cached the results for future requests.