aa.js

import { Redis } from "@upstash/redis/cloudflare";
import { MultiRegionRatelimit } from "@upstash/ratelimit";

export interface Env {
}

const cache = new Map();

export default {
  async fetch(
    request: Request,
    env: Env,
    _ctx: ExecutionContext,
  ): Promise<Response> {
    if (new URL(request.url).pathname == "/favicon.ico") {
      return new Response(null, { status: 400 });
    }


    const ratelimit = new MultiRegionRatelimit({
      redis: [
        new Redis({
          url: "https://us1-merry-macaque.upstash.io",
          token: "AX_sASQgODM5ZjExZGEtI4ZmVjNmE3ZDk3NDIxMmEwNmNkYjVmOGVmZTk5MzQ=",
        }),
        new Redis({
          url: "https://eu2-neat-caribou.upstash.io",
          token: "AXe5ASQgNmM5YmFFiMWExMDc5NmU2NGFiYWEwMzk2ZjE4ZWQ3N2Y4YTE=",
        })
      ],
      limiter: MultiRegionRatelimit.fixedWindow(5, "5 s"),
      ephermeralCache: cache,
    });

    const userIP: string = request.headers.get('CF-Connecting-IP') || "none";

    const data = await ratelimit.limit(userIP);
    if (data.success) {
      // if you use CF Workers to intercept another site, uncomment below
      // return await fetch(request);
      return new Response(JSON.stringify({ message: "Success, you are not rate limited.", ip: userIP, data }, null, 2), { status: 200 });
    } else {
      // show an error page for rate limited users
      return new Response(JSON.stringify({ message: "You are rate limited, try again later.", ip: userIP, data }, null, 2), { status: 200 });
    }
  },
};