---
title: Multiple Cron Triggers
description: Set multiple Cron Triggers on three different schedules.
image: https://developers.cloudflare.com/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-12027)
* [  TypeScript ](#tab-panel-12028)
* [  Hono ](#tab-panel-12029)

JavaScript

```
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

```
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

```
import { Hono } from "hono";
interface Env {}
// Create Hono appconst app = new Hono<{ Bindings: Env }>();
// Regular routes for normal HTTP requestsapp.get("/", (c) => c.text("Multiple Cron Trigger Example"));
// Export both the app and a scheduled functionexport 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://developers.cloudflare.com/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.

Terminal window

```
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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