Setting Up Cloudflare Workers Cron Triggers

steps

1. Install Wrangler CLI
   Make sure you have Wrangler installed on your system. You can install it using npm:

   bashCopy

   npm install -g wrangler

2. Generate a new Worker
   Run the following command to generate a new Worker project:

   bashCopy

   wrangler generate my-worker
   cd my-worker

3. Add the scheduled event listener
   Open the index.js file in your project directory and add code to handle scheduled events:

   javascriptCopy

   export default {
     async scheduled(event) {
       event.waitUntil(handleScheduled(event));
     }
   };
   
   async function handleScheduled(event) {
     // Example task: Log a message
     console.log("Cron job executed!");
   }

   This function will perform the desired tasks when triggered.

steps

1. Update wrangler.toml
   Open the wrangler.toml file in your project. Add the triggers section with a crons array to specify your cron schedule:

   Copy

   [[triggers]]
   crons = ["0 * * * *"]  # Runs every hour at minute 0

2. Understand cron syntax
   Use crontab.guru to test and generate valid cron expressions. For example:

   • "0 * * * *": Every hour on the hour.
   • "0 12 * * *": At noon every day.

3. Save and close your configuration
   Ensure the wrangler.toml file is saved with the proper syntax.