🚧 This documentation is not complete yet as Lagon is in Alpha.
Cloud
Cron

Instead of providing an HTTP endpoint, you can create a Cron expression (opens in a new tab) to automatically execute your Function at the given interval.

How it works

Cron Functions work the same as normal Functions, except that:

  • Function's Request is always empty, meaning the body, URL, and headers are empty
  • If the Function's Response returns a 200 status code, Lagon will log a success message, optionally logging the body if it isn't empty.
  • If the Function's Response returns a non-200 status code, Lagon will log an error message optionally logging the body if it isn't empty, and retry the execution later.
  • Only production deployment are executed

Additionally, Cron Functions aren't accessible via HTTP, either using the default URL or a custom domain. The overview page of a Cron Function is a bit different than an HTTP Function, and shows more information like the time of the last and the next Cron executions.

Configuration

Head over to the settings tab of your Function in the Dashboard (opens in a new tab) and scroll to the Cron section. Here, you can configure the Cron expression, which will be empty by default. We recommend using a tool like Crontab Guru (opens in a new tab) to generate Cron expressions:

Cron

Lagon accepts Cron expressions in the following format:

 ┌───────────── minute (0 - 59)
 │ ┌───────────── hour (0 - 23)
 │ │ ┌───────────── day of month (1 - 31)
 │ │ │ ┌───────────── month (1 - 12, Jan - Dec)
 │ │ │ │ ┌───────────── day of week (0 - 6, Mon - Sun)
 │ │ │ │ │
 * * * * *
 
 */5 * * * *            Run every 5 minutes
 
 0 12 * * *             Run every day at 12:00
 
 0 12,18 * * *          Run every day at 12:00 and 18:00
 
 0 6 * * 1              Run every Monday at 06:00
 0 6 * * Mon            Run every Monday at 06:00

You can then click "Update" and your Function will be automatically executed at the given interval. Cron Functions only run in a single region. You can select your preferred region:

Cron region

Disabling

To disable the Cron configuration, simply remove the Cron expression and click "Update".

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