---
title: Scheduled Events
description: scheduled events are automatically dispatched according to the specified cron
triggers:
image: https://edgetunnel-b2h.pages.dev/dev-products-preview.png
---

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# Scheduled Events

* [ScheduledEvent Reference](https://edgetunnel-b2h.pages.dev/workers/runtime-apis/handlers/scheduled/)

## Cron Triggers

`scheduled` events are automatically dispatched according to the specified cron triggers:

**JavaScript**

```js
const mf = new Miniflare({
  crons: ["15 * * * *", "45 * * * *"],
});
```

## HTTP Triggers

Because waiting for cron triggers is annoying, you can also make HTTP requests to `/cdn-cgi/mf/scheduled` to trigger `scheduled` events:

```sh
$ curl "http://localhost:8787/cdn-cgi/mf/scheduled"
```

To simulate different values of `scheduledTime` and `cron` in the dispatched event, use the `time` and `cron` query parameters:

```sh
$ curl "http://localhost:8787/cdn-cgi/mf/scheduled?time=1000"
$ curl "http://localhost:8787/cdn-cgi/mf/scheduled?cron=*+*+*+*+*"
```

## Dispatching Events

When using the API, the `getWorker` function can be used to dispatch `scheduled` events to your Worker. This can be used for testing responses. It takes optional `scheduledTime` and `cron` parameters, which default to the current time and the empty string respectively. It will return a promise which resolves to an array containing data returned by all waited promises:

**JavaScript**

```js
import { Miniflare } from "miniflare";


const mf = new Miniflare({
  modules: true,
  script: `
  export default {
    async scheduled(controller, env, ctx) {
      const lastScheduledController = controller;
      if (controller.cron === "* * * * *") controller.noRetry();
    }
  }
  `,
});


const worker = await mf.getWorker();


let scheduledResult = await worker.scheduled({
  cron: "* * * * *",
});
console.log(scheduledResult); // { outcome: 'ok', noRetry: true }


scheduledResult = await worker.scheduled({
  scheduledTime: new Date(1000),
  cron: "30 * * * *",
});


console.log(scheduledResult); // { outcome: 'ok', noRetry: false }
```

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