Checkly provides two scheduling strategies for running checks: Round-robin or Parallel scheduling. To select a scheduling strategy go to ‘Scheduling and locations’ when creating or editing a check.
Using Round-robin Scheduling, your check will run on one of the selected locations each time it is scheduled. The next check run will be scheduled on a different location from the list until all locations have been run once, and the check rotates back to the first location in the list.When using the Round-robin Scheduling strategy you can choose to have retries to run from a random location of the ones selected, or run it from the same location as the first attempt.Use Round-robin Scheduling when the service you are monitoring can be considered available as long as at least one location is available and detecting a regional outage is not critical.
With Parallel Scheduling, each time the check is scheduled it will run once from each selected location. When running a check in parallel, retries will always be run from the same location as the first attempt.Use Parallel Scheduling to reduce detection times for regional outages and reduce time to detect service degradations that impact the customer experience.