Custom Auth Strategies
Develop and integrate custom authentication strategies for specific project requirements beyond existing libraries.
Why Custom Authentication?
While libraries like NextAuth.js are powerful, sometimes your project needs a unique authentication flow. Custom strategies give you full control over every detail.
- Handle specific integration requirements.
- Implement unique authentication flows (e.g., magic links).
- Gain a deeper understanding of core auth concepts.
This lesson explores building authentication from the ground up using Next.js 15 features.
Core Concepts: Sessions & Cookies
Authentication often relies on sessions to maintain a user's logged-in state across multiple requests. To manage sessions in web applications, we primarily use HTTP cookies.
- Cookies are small data pieces sent by a server to a browser.
- The browser stores them and sends them back with subsequent requests.
- They are crucial for remembering user login status.