Auth Implementation Patterns

This one helps you implement auth systems without reinventing the wheel or copy-pasting half-baked examples from Stack Overflow. It walks you through choosing between session-based, JWT, or OIDC flows, designing RBAC models, and planning the stuff people forget like token rotation and audit logs. The implementation playbook resource has detailed patterns you can actually use. It's opinionated about threat modeling and secrets handling, which is exactly what you want when dealing with credentials. Good fit if you're building login systems, adding OAuth, or securing APIs. Skip it if you're just styling a form or can't touch how credentials are stored.