caching-remote-requests.php

<?php

function get_remote_data( $slug ) {
  
  $key = 'some-key-string';

  if( !wp_cache_get( $key ) ) {
    $response = wp_remote_get( $url );

    //error handling
    
    wp_cache_add( $key , $response );
    return $response;
  }
  else {
    return wp_cache_get( $key );
  }

}