How to use server functions with Actions?

0-2 years experience

1. 1You need to fetch a list of products from your backend using a server action in a React component. How would you set up the server function and call it from the component?
2. 2If a server action you imported throws an error, what will the UI show and how can you handle the error in the component?

2-5 years experience

1. 1While implementing a form that submits data via a server action, you notice the action runs twice on each submit. What could cause this and how would you debug it?
2. 2Explain the trade‑offs between using a server action versus a traditional API route for a feature that needs to read session cookies and write to a database.

5-8 years experience

1. 1Your app uses server actions for many data mutations, but you start seeing performance degradation under load. How would you identify bottlenecks and what strategies could you apply to improve scalability?
2. 2Design a pattern for sharing server actions across multiple pages while keeping type safety and avoiding circular dependencies.

8+ years experience

1. 1Your organization is migrating a large codebase from client‑side data fetching to React Server Actions. What architectural considerations, testing strategies, and rollout plan would you propose to minimize risk?
2. 2Discuss how you would coordinate server action contracts between frontend and backend teams to ensure backward compatibility and versioning over time.