Cloudflare Rate Limit

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This example creates a Cloudflare Rate Limit and a Worker that applies it.

sst.config.ts

const rateLimit = new sst.cloudflare.RateLimit("MyRateLimit", {
  namespaceId: 1001,
  limit: 100,
  period: "1 minute",
});

const worker = new sst.cloudflare.Worker("MyWorker", {
  handler: "./index.ts",
  url: true,
  link: [rateLimit],
});

index.ts

import { Resource } from "sst/resource";

export default {
  async fetch(req: Request) {
    const url = new URL(req.url);

    const outcome = await Resource.MyRateLimit.limit({ key: url.pathname });
    if (!outcome.success) {
      return new Response(`Rate limit exceeded for ${url.pathname}`, { status: 429 });
    }

    return new Response("OK", { status: 200 });
  },
};

View the full example.