how to handle permissions like a senior dev

handling permissions is a critical aspect of software development, particularly when dealing with user authentication and authorization. properly managing permissions not only secures your application but also ensures that users can only access the resources and actions they are entitled to. in this tutorial, we will explore how to handle permissions effectively, focusing on best practices, concepts, and code examples.

understanding permissions

permissions typically involve two key concepts: **authentication** and **authorization**.

1. **authentication**: this verifies the identity of a user (e.g., logging in with a username and password).
2. **authorization**: this determines what an authenticated user can do (e.g., read, write, delete).

best practices for handling permissions

1. **principle of least privilege**: users should have the minimum permissions necessary to perform their tasks.
2. **role-based access control (rbac)**: use roles to group permissions and assign them to users. this simplifies permission management.
3. **use middleware**: in web applications, use middleware to handle authorization checks before accessing routes.
4. **centralized permission management**: store permissions and roles in a centralized location (like a database) for easier management.
5. **audit logs**: maintain logs of permission changes and access attempts for security audits.

example: role-based access control

step 1: setup your project





step 2: user authentication

add an endpoint to authenticate users and issue jwts:

step 3: middleware for authorization

create middleware to check permissions based on user roles:

step 4: define routes with permissions

now, use the middleware to protect routes based on roles:

step 5: test the application

1. sta ...

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