Next.js 15 Server Actions: What Changed and Why It Matters
Server Actions in Next.js 15 get stricter typing, better error handling, and deeper RSC integration. Here's how we're using them in production.
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// TypeScript - type-safe, production patterns
interface User {
name: string;
role: string;
}
class Greeter {
private emoji = "👋";
greet(user: User): string {
return `Hello, ${user.name}! ${this.emoji}`;
}
getInfo(user: User): string {
return `Role: ${user.role}`;
}
}
const greeter = new Greeter();
const user: User = { name: "World", role: "Developer" };
console.log(greeter.greet(user));
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Server Actions in Next.js 15 get stricter typing, better error handling, and deeper RSC integration. Here's how we're using them in production.
Practical first steps: one workflow, measure time saved, then scale. We use n8n and LangChain for quick wins.
Before we write a line of code, we align on LTV, CAC, and payback. Here's the checklist we use with founders.