He probably asks if they are pre-loaded (so when someone first visits your webpage they don't have to wait for the django config to be parsed and it get loaded onto memory).
It's common in free versions of such services, to only load things on demand, which is a little slow --in Google App Engine you can pay to have instances pre-loaded.
Oh. Yes, they are identical to paid dynos. Essentially, Heroku just deducts 750 paid hours from your bill each month (which is just enough to run one web dyno 24x7).
It's common in free versions of such services, to only load things on demand, which is a little slow --in Google App Engine you can pay to have instances pre-loaded.