Alarms

Alarms are timers on a Durable Object. Cloudflare documents them under the DO API; this site keeps them under the Durable Objects product. getAlarm / setAlarm / deleteAlarm and the alarm() handler are supported. The object still lives on this one workerd.

export class Snooze {
  constructor(private readonly ctx: DurableObjectState) {}
  async fetch(): Promise<Response> {
    await this.ctx.storage.setAlarm(Date.now() + 10_000);
    return new Response("armed");
  }
  async alarm(): Promise<void> {
    await this.ctx.storage.put("fired", true);
  }
}

getAlarm / setAlarm / deleteAlarm and the alarm() handler match Cloudflare. Cross-region wake-up and Cloudflare dashboard alarm observability are not provided.