Is it normal to constantly make a request to Oauth?

Question

OAuth

Connecting to public services. Is it normal to write a user's access_token to the session after authorization, and with each request to receive information about him, making a request to the State Services? I look at sites that are connected to the ESIA, they seem to store information on their own, but after logging out and logging in, they update it. And in the training manual it is written that the token is saved and used if necessary. But we always need it in fact - for example, to show the username in the header.