One thing I'm wondering about graphql is how does it know when something changed in the db and should be re-queried. For example, I fetch some movies in my fron

One thing I'm wondering about graphql is how does it know when something changed in the db and should be re-queried. For example, I fetch some movies in my front-end webapp and they are cached. Then, later on, I query that movie again but something changed on the server, say the producer had a typo in their name. In that situation, it seems like graphql will only fetch the new fields I'm querying, and not what's already cached. I understand it's a caching problem which is hard (I know that joke), but I'm wondering specifically how it's handled with a graph query. The way I've been doing it is using a SQL structured on the front-end and downloading the main table/rows + changes. But graphql seems to be downloading and aggressively caching without keeping track of timestamp.