Using Memcached class to collect & process remote data via cron. Using Phalcon later to present this data.
Phalcon can not access data set by the former when configured via the example on https://docs.phalcon.io/en/latest/api/Phalcon_Cache_Backend_Libmemcached.html
\Phalcon\Cache\Frontend\Data serializes data, which obviously doesn't happen in non-Phalcon memcached. To interoperate with keys set outside Phalcon, use \Phalcon\Cache\Frontend\None as your frontend.
Just a heads up for anyone doing similar. Loving Phalcon