4. Authentication & Security
RBAC, ABAC & Resource Authorization
Protect resources consistently with roles, ownership and tenant-aware policies.
Lesson overview
Authorization should be enforced at the resource boundary, not merely by hiding UI controls. RBAC works for broad roles; resource ownership and tenant attributes often require more precise policy checks.
Learning path
Theory → Example → Code → Practice → Quiz → Challenge → Completion
Step 1
Theory
Authorization should be enforced at the resource boundary, not merely by hiding UI controls. RBAC works for broad roles; resource ownership and tenant attributes often require more precise policy checks.
Step 2
Example
A seller may edit only products they own while an admin can edit all products. Both rules must be enforced by the API.
Step 3
Code
typescript
function canEditProduct(user: User, product: Product) {
return user.role === "ADMIN" || product.ownerId === user.id;
}
Step 4
Practice
Review your current application and apply RBAC, ABAC & Resource Authorization. Document the current behavior, one production risk, the change you would make, and how you would verify it.
Step 5
Quiz
1. What is the central production concern in "RBAC, ABAC & Resource Authorization"?
Step 6
Challenge
Design a production-ready implementation for RBAC, ABAC & Resource Authorization. Include failure handling, security considerations, observability, testing and a rollback or recovery path where applicable.
Complete every stage
Work through every step in order, then the lesson will be marked complete.
Each chapter and subtopic has its own public URL under /full-stack-to-production.