Practical GraphQL - Become a GraphQL Ninja - Registering a user via GraphQL

The video tutorial covers defining a user type in GraphQL, adding a register mutation, and implementing resolver functionality to handle user registration. It explains handling promises with async functions and tests the registration process, ensuring unique usernames and hashed passwords. The tutorial concludes with a preview of upcoming lessons on login and authentication.

What validation error occurs if a username is not unique during registration?

How is the password handled in the user schema to ensure security?

What is the next topic to be covered after user registration in the lessons?