Engineering resilient, performant web platforms.

// Edge-friendly SSR + API composition example (TypeScript)
import { cache } from 'next/cache';
import { z } from 'zod';

const UserSchema = z.object({
  id: z.string(),
  name: z.string(),
  plan: z.enum(['free','pro','enterprise']),
  usage: z.number()
});

export const getUser = cache(async (id: string) => {
  const r = await fetch(`${process.env.API}/users/${id}`, { next: { revalidate: 15 } });
  if (!r.ok) throw new Error('Upstream failure');
  return UserSchema.parse(await r.json());
});

export async function GET(req: Request) {
  const id = new URL(req.url).searchParams.get('id') || 'me';
  const user = await getUser(id);
  return Response.json({
    id: user.id,
    tier: user.plan,
    usagePct: +(user.usage / 1000).toFixed(2)
  }, { headers: { 'Cache-Control': 'public, max-age=30, stale-while-revalidate=120' }});
}