This topic describes the architecture of Scheduler.
In a highly available resource configuration, the Scheduler service uses the following:
Three Scheduler instances, each running the Scheduler HTTP API server and a Scheduler Engine.
Three Scheduler Service Broker instances
You can reduce the number of Scheduler instances to one using the Cloud Foundry Command Line Interface (cf CLI).
Scheduler relies on a MySQL datastore to persist data, including jobs, calls, and history. Each call or schedule can require up to 10 MB of database capacity to store history. A large foundations’s database disk footprint would be approximately 500 MB.