Thanks a lot Justin, I modified the functions.php file.
I guess I found it. Change the DAY_IN_SECONDS to HOUR_IN_SECONDS?
$cache_expiration = apply_filters( 'gtc_top_content_shortcode_cache_expiration', DAY_IN_SECONDS );
set_transient( $trans_id, $list, $cache_expiration );
I have the same question. We would like to show popular posts in the last few hours and we would need the cache to update every few hours. Would you be so kind to explain how to do it? Thanks.
