🧠 RBAC & Authorization Design
I design role-based access control (RBAC) systems to remain maintainable and scalable as products grow across modules, teams, and business rules.
🎯 How I Think About Authorization
Access control becomes complex when permissions vary by:
action (create, approve, edit)
module (HR, payroll, expenses)
organization or department
workflow state
If not designed carefully, it can lead to:
security risks
data leaks
incorrect approvals
So I treat authorization as a core system design concern, not just middleware.
🧩 Design Approach
Roles vs Permissions
Roles → used for common access bundles (easy to assign)
Permissions → used for fine-grained control
In practice, I combine both:
roles for standard access
permissions for flexibility
groups for reusable patterns
Contextual Authorization
Not all access rules are static.
Some depend on context, such as:
approving only within a specific department
accessing only data within the same organization
editing only before a workflow is locked
👉 Because of this, I place authorization logic in the domain layer, not just route-level checks.
🧠 Good Practices I Follow
keep permission names clear and business-readable
centralize authorization logic for consistency
avoid scattering checks across multiple services
model ownership, hierarchy, and scope properly
treat permission changes as product-level decisions, not just technical updates
⚖️ Tradeoff Awareness
simple role systems are easy to manage but less flexible
fine-grained permissions increase flexibility but add complexity
👉 I balance both based on system needs
📌 Practical Approach
I design authorization around:
> real business boundaries and responsibilities
not just:
routes
controllers
💬 Summary
My approach to RBAC focuses on:
maintaining clear access boundaries
supporting complex workflows
preventing data leakage and misuse
This helps ensure systems remain secure, predictable, and scalable as they grow.