Don't do that as the page is rendered. Have an offline job pull in those feeds and store them in a database, then have the frontend pull from the database. Even

Don't do that as the page is rendered. Have an offline job pull in those feeds and store them in a database, then have the frontend pull from the database. Even if the feeds are highly specific for the page loaded - In that case, model the database as a queue where the frontend requests the feed and the offline jobs pulls them. This will allow you to parallelize the feeds, which is otherwise neigh impossible to do in php.