Keel

Caution: This project remains untested in extensive production settings. We advise consulting the authors prior to adoption.

1. Concepts

• Tenant: An entity representing a customer, a work team and so on. Keel schedules tasks per each tenant.
  • TenantUid: The user-provided unique identifier for a Tenant, must be unique across all tenants.
  • Zone: Available zone. Tenants must be unique across multiple zones.
• Task: A task or job entity managed and executed by Keel. Say you are going to build an application processing customers' media resources in background, such a process can be seen as Task.
  • TaskUid: The user-provided unique identifier for Task, must be unique under a Tenant.
• ResourceQuota: Resource usage limit of a Tenant, e.g. CPU, memory, GPU, storage, concurrency or custom workload figure.
• Scheduler: The process that handles task scheduling, but does not execute tasks. There might be more than one Scheduler running but only one Scheduler (the leader) can dispatch tasks at one time.
• Worker: The process that executes tasks assigned by Scheduler.