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Cron Triggers

Set a Cron Trigger for your Worker.

addEventListener('scheduled', event => {
event.waitUntil(triggerEvent(event.scheduledTime))
})
async function triggerEvent(scheduledTime) {
// Fetch some data
// Update API
console.log("cron processed")
}

Setting Cron Triggers in Wrangler

If you are deploying with Wrangler, set the cron syntax (once per hour as shown below) by adding this to your wrangler.toml file:

name = "worker"
# ...
[triggers]
crons = ["0 * * * *"]

You also can set a different Cron Trigger for each environment in your wrangler.toml. You need to put the [triggers] table under your chosen environment. For example:

[env.dev.triggers]
crons = ["0 * * * *"]