Technologies Coding Problems Bookmarks Learning Paths

Technologies Coding Problems Bookmarks Learning Paths

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How to use server functions with Actions? | CSR-SSR | react Interview Questions | NextRound.in

Questions

1 of 6

1How to use server functions with Actions?

2What are Server Functions?

3What is the use of async in server components?

4What are React Server Components?

5How is RSC (React Server Components) different from SSR (Server Side Rendering)?

6Discuss 'use client' and 'use server' directives?

react

State and Props

Class Components

Function Components

Lifecycle functions

Performance Optimisation

01 / 06

How to use server functions with Actions?

Difficulty: 5/10

React Server Components, Server Actions, Data fetching

1
You can pass a Server Function to a Form to automatically submit the form to the server.
2
You can call Server Functions with useActionState for the common case where you just need access to the action pending state and last returned response:

Server function

With useTransition():

Directly with form action:

Using useActionState:

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Scenario Questions

0-2 years experience

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?
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

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?
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

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?
2Design a pattern for sharing server actions across multiple pages while keeping type safety and avoiding circular dependencies.

8+ years experience

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?
2Discuss how you would coordinate server action contracts between frontend and backend teams to ensure backward compatibility and versioning over time.

Follow-up Questions

How would you write a unit test for a server action?
What monitoring or logging would you add around server actions in production?
How do you handle authentication and session data inside a server action?