Login with Google | Supabase Docs

1. Authentication Protocols

Supabase Auth supports multiple authentication providers:

• Email/password (traditional login).
• Magic links (passwordless login via email).
• 3rd-party OAuth (Google, GitHub, Facebook, etc.).
• Phone (SMS OTP).
• Custom JWTs.

Each method issues JWT (JSON Web Tokens) upon successful login.

2. Session Management

• When a user signs in, Supabase Auth generates:
  • Access Token (JWT): Short-lived (about 1 hour).
  • Refresh Token: Used to get a new access token when it expires.
• These tokens are stored in the _supabase_auth.token local storage (or cookies if you choose).

3. Database Integration

Supabase Auth is deeply integrated with your database:

• Every user is automatically inserted into the auth.users table in the database.
• You can link user IDs (uuid) with your app tables for relationships.