Node Cron Extension

The Node Cron extension is one of the scheduling extensions that allows you to trigger workflows at specific times using cron expressions.

Limitation:

• By design this extension is not suitable for horizontal scaling, as it uses in-memory storage to keep track of the cron jobs.
• You can only schedule a task statically using a cron expression.

Beware that this scheduling extension is not suitable for serverless environments.

Configuration

To use the Node Cron extension, you need to configure the cron expression and the workflow you want to trigger.

Settings

Environment Variables

No environment variables are required for this extension.

Build Variables

No build variables for this extension.

Triggers

The Node Cron extension triggers a workflow at a specific time using a cron expression.

trigger.schedule({
  pattern: '0 0 * * *',
});

This sample code triggers the workflow every day at midnight.

Usage within a workflow:

workflow('ReportServerHealth', {
  tag: 'posts',
  trigger: trigger.schedule({
    pattern: '0 0 * * *',
  }),
  execute: async () => {
    // do something
  },
});