Jump to Content
Application Development

Cloud Scheduler, a fully managed cron job service from Google Cloud

May 31, 2019
Vinod Ramachandran

Product Manager

At Google Cloud Next, we announced the general availability of Cloud Scheduler, a fully managed cron job service that allows any application to invoke batch, big data and cloud infrastructure operations. Since then, we have added an important new feature that allows you to trigger any service, running anywhere: on-prem, on Google Cloud or any third party datacenter.

Invoke any service with Cloud Scheduler
Now, you can securely invoke HTTP targets on a schedule to reach services running on Google Kubernetes Engine (GKE), Compute Engine, Cloud Run, Cloud Functions, or on on-prem systems or elsewhere with a public IP using industry-standard OAuth/OpenID Connect authentication.


With Cloud Scheduler, you get the following benefits:

  • Reliable delivery: Cloud Scheduler offers at-least-once delivery of a job to the target, guaranteeing that mission-critical jobs are invoked for execution.
  • Secure Invocation: Use industry standard OAuth/OpenID Connect tokens to invoke your HTTP/S schedules in a secure fashion. (NEW)
  • Fault-tolerant execution: Cloud Scheduler lets you automate your retries and execute a job in a fault-tolerant manner by deploying to different regions, so you eliminate the risk of single point of failure as seen in traditional cron services.
  • Unified management experience: Cloud Scheduler lets you invoke your schedules through the UI, CLI or API and still have a single pane of glass management experience. It also supports the familiar Unix cron format to define your job schedules.

Better yet, Cloud Scheduler does all this in a fully managed serverless fashion, with no need to provision the underlying infrastructure, or manually intervene since it automatically retries failed jobs. You also pay only for the operations you run—GCP takes care of all resource provisioning, replication and scaling required to operate Cloud Scheduler. As a developer you simply create your schedules and Cloud Scheduler handles the rest.

How Cloud Scheduler works
To schedule a job, you can use the Cloud Scheduler UI, CLI or API to invoke your favorite HTTP/S endpoint, Cloud Pub/Sub topic or App Engine application. Cloud Scheduler runs a job by sending an HTTP request or Cloud Pub/Sub message to a specified target destination on a recurring schedule. The target handler executes the job and returns a response. If the job succeeds, a success code (2xx for HTTP/App Engine and 0 for Pub/Sub) is returned to Cloud Scheduler. If a job fails, an error is sent back to Cloud Scheduler, which then retries the job until the maximum number of attempts is reached. Once the job has been scheduled, you can monitor it on the Cloud Scheduler UI and check the status of the job.

Glue together an end-to-end solution
Cloud Scheduler can be used to architect interesting solutions like wiring together a reporting system on a schedule using Cloud Functions, Compute Engine, Cloud Pub/Sub and Stackdriver. Here’s an example from Garrett Kutcha from Target at Cloud Next 2019.

Video Thumbnail

You can also use Cloud Scheduler to do things like schedule database updates and push notifications, trigger CI/CD pipelines, schedule tasks such as image uploads, and invoke cloud functions. Tightly integrated with most Google Cloud Platform (GCP) products, the sky’s the limit with Cloud Scheduler!

Get started today
With Cloud Scheduler, you now have a modern, serverless solution to your job scheduling needs. To try out Cloud Scheduler today, check out the quickstart guide. Then, create and configure your own schedules using the documentation or start a free trial on GCP!

Posted in