---
description: Set multiple Cron Triggers on three different schedules.
title: Multiple Cron Triggers
image: https://developers.cloudflare.com/og-docs.png
---

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# Multiple Cron Triggers

Set multiple Cron Triggers on three different schedules.

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/workers/examples/multiple-cron-triggers/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

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

```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");
	},
};
```

```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");
	},
};
```

```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://docs-durable-objects-instance-replaced-errors.previews.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.

```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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