Membuat URL Shortener dengan Cloudflare Workers + KV

npx wrangler kv namespace create LINKS

# wrangler.toml
[[kv_namespaces]]
binding = "LINKS"
id = "xxxxxxxxxxxx"

import { Hono } from "hono";

const app = new Hono();

// Redirect
app.get("/:slug", async (c) => {
  const slug = c.req.param("slug");
  const url = await c.env.LINKS.get(slug);
  if (!url) return c.text("Link tidak ditemukan", 404);
  return c.redirect(url, 301);
});

// Bikin link pendek
app.post("/api/shorten", async (c) => {
  const { url, custom } = await c.req.json();
  if (!url) return c.json({ error: "URL wajib diisi" }, 400);

  // Validasi URL
  try { new URL(url); } catch { return c.json({ error: "URL tidak valid" }, 400); }

  const slug = custom || Math.random().toString(36).slice(2, 8);

  const exists = await c.env.LINKS.get(slug);
  if (exists) return c.json({ error: "Slug sudah dipakai" }, 409);

  await c.env.LINKS.put(slug, url);
  return c.json({ slug, short: `https://${c.req.header("host")}/${slug}`, url });
});

export default app;

curl -X POST https://short.mydomain.co/api/shorten \
  -H "Content-Type: application/json" \
  -d '{"url":"https://blog.izz.my.id/posts/apa-itu-cloudflare-workers"}'

{ "slug": "a3f9k2", "short": "https://short.mydomain.co/a3f9k2", "url": "..." }