Exploring the Difference Between Functions in Server Actions and Server Components in NextJS

What are the benefits and distinctions between declaring an async function directly in the server component, using it inside the SC, or defining it within a server action?

Answer №1

When it comes to server actions, they are essentially hidden as POST requests behind the scenes. This means that NextJS takes your server action code and places it in a route handler (API) as a POST request, providing you with a simplified syntax for making post requests on the client side. As a result, you can simply use await myServerAction(...) instead of having to manually write out

await fetch("...", { method: "POST" })
.

It's important to note that server actions are most useful when you need to modify data on the backend from the client side, which is typically achieved through POST requests.

On the other hand, if you're just looking to retrieve data for use in your component, you can either fetch them directly in your server component or organize them within a separate function to maintain clean and reusable code.

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