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  4. Multiple Cron Triggers

Multiple Cron Triggers

Set multiple Cron Triggers on three different schedules.

export default {
  async scheduled(event, env, ctx) {
    // Write code for updating your API
    switch (event.cron) {
      // You can set up to three schedules maximum.
      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");
  },

};


const handler: ExportedHandler = {
  async scheduled(event, env, ctx) {
    // Write code for updating your API
    switch (event.cron) {
      // You can set up to three schedules maximum.
      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");
  },

};



export default handler;

​​ 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. This will expose a /__scheduled route which can be used to test using a HTTP request. To simulate different cron patterns, a cron query parameter can be passed in.


$ wrangler dev --test-scheduled



$ curl "http://localhost:8787/__scheduled?cron=*%2F3+*+*+*+*"