Can I cache the JSON returned by an endpoint? Would like to not make the AJAX or API call repeatedly

I have an endpoint that calls an external API which returns JSON.

It's for "related content" for a post. (Yes, I know Khoros has an OOTB and a componentized version of that already for Hermes, but I need to access our own DB of related content, which is reached through an API call.)

My end goal is that each post on our Community have related content from this API but that it only gets called every day or so, and the related content is displayed from the cache. 

Let's just say the JSON is something like this:

{
 [
   {
     "author":"John",
     "title":"Some article"
     "url":"community/t5/Developer-Discussion/Caching-API-objects/m-p/217953"
   },
   {
     "author":"Mary",
     "title":"Another article"
     "url":"community/t5/Developer-Discussion/dvice-on-performance-for-external-API-query/m-p/208726"
   }
 ]
}

That is currently the output of the endpoint. 

That data is consumed by a component

<@liaAddScript>
(function($) {
    $(document).ready(function() {
        $.get( "${my_endpoint_url}" ).done(function( data ) {
           console.log(data);

        }).fail(function() {
           console.log('fail');
        }) 
     });
})(LITHIUM.jQuery);
</@liaAddScript>

(I hate that the only way to get a component is through AJAX, I wish there were a server-side way to get the data. Unless you know another way to get endpoint data...?)

I want to cache the results of the endpoint so that the external API call is not made repeatedly. We want the most efficient execution of this. 

Do I cache it in the endpoint or the component? 

What's the best practice in order to avoid multiple calls to the API?

Please help a friend out with a code example so I can understand it better. 

I have found several questions about it here on Atlas but they are very old (2015-2018), not answered, or archived, and I'm not sure exactly how to apply it. 

luk is this one still relevant? https://community.khoros.com/t5/Developer-Discussion/Advice-on-performance-for-external-API-query/m-p/208726#M9485

Do you, luk , Claudius or Akenefick DougS  (or anyone else) have some thoughts on this?

Thanks