---
title: Multiple Cron Triggers
description: Set multiple Cron Triggers on three different schedules.
image: https://edgetunnel-b2h.pages.dev/dev-products-preview.png
---

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# Multiple Cron Triggers

Set multiple Cron Triggers on three different schedules.

If you want to get started quickly, click on the button below.

[![Deploy to Cloudflare](https://deploy.workers.cloudflare.com/button)](https://deploy.workers.cloudflare.com/?url=https://github.com/cloudflare/docs-examples/tree/main/workers/multiple-cron-triggers)

This creates a repository in your GitHub account and deploys the application to Cloudflare Workers.

* [  JavaScript ](#tab-panel-12568)
* [  TypeScript ](#tab-panel-12569)
* [  Hono ](#tab-panel-12570)

**JavaScript**

```js
export default {
  async scheduled(event, env, ctx) {
    // Write code for updating your API
    switch (event.cron) {
      case "*/3 * * * *":
        // Every three minutes
        await updateAPI();
        break;
      case "*/10 * * * *":
        // Every ten minutes
        await updateAPI2();
        break;
      case "*/45 * * * *":
        // Every forty-five minutes
        await updateAPI3();
        break;
    }
    console.log("cron processed");
  },
};
```

**TypeScript**

```ts
interface Env {}
export default {
  async scheduled(
    controller: ScheduledController,
    env: Env,
    ctx: ExecutionContext,
  ) {
    // Write code for updating your API
    switch (controller.cron) {
      case "*/3 * * * *":
        // Every three minutes
        await updateAPI();
        break;
      case "*/10 * * * *":
        // Every ten minutes
        await updateAPI2();
        break;
      case "*/45 * * * *":
        // Every forty-five minutes
        await updateAPI3();
        break;
    }
    console.log("cron processed");
  },
};
```

**TypeScript**

```ts
import { Hono } from "hono";


interface Env {}


// Create Hono app
const app = new Hono<{ Bindings: Env }>();


// Regular routes for normal HTTP requests
app.get("/", (c) => c.text("Multiple Cron Trigger Example"));


// Export both the app and a scheduled function
export default {
  // The Hono app handles regular HTTP requests
  fetch: app.fetch,


  // The scheduled function handles Cron triggers
  async scheduled(
    controller: ScheduledController,
    env: Env,
    ctx: ExecutionContext,
  ) {
    // Check which cron schedule triggered this execution
    switch (controller.cron) {
      case "*/3 * * * *":
        // Every three minutes
        await updateAPI();
        break;
      case "*/10 * * * *":
        // Every ten minutes
        await updateAPI2();
        break;
      case "*/45 * * * *":
        // Every forty-five minutes
        await updateAPI3();
        break;
    }
    console.log("cron processed");
  },
};
```

## Test Cron Triggers using Wrangler

The recommended way of testing Cron Triggers is using Wrangler.

Cron Triggers can be tested using Wrangler by passing in the `--test-scheduled` flag to [wrangler dev](https://edgetunnel-b2h.pages.dev/workers/wrangler/commands/general/#dev). This will expose a `/__scheduled` (or `/cdn-cgi/handler/scheduled` for Python Workers) route which can be used to test using a HTTP request. To simulate different cron patterns, a `cron` query parameter can be passed in.

```sh
npx wrangler dev --test-scheduled


curl "http://localhost:8787/__scheduled?cron=*%2F3+*+*+*+*"


curl "http://localhost:8787/cdn-cgi/handler/scheduled?cron=*+*+*+*+*" # Python Workers
```

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