Orchestration

Running a single process is easy. Running a system where Service A depends on Service B, and Service B needs to be updated without downtime, is hard.

Super simplifies this with built-in orchestration primitives.

In this section

• Dependencies: Define startup order and topology.
• Health Checks: Ensure services are actually ready, not just running.
• Lifecycle Hooks: Run scripts before or after process events.
• Events: The event system — types, history, and hooks.
• Atomic OTA Updates: The fail-safe mechanism for updating binaries.

Events

Super’s event system has three layers — what is emitted, how it is recorded, and how you react:

• Event Types: Complete catalog of daemon events and their payloads.
• Event History: How events are persisted, retained, queried, and audited.
• Event Hooks: Local scripts or webhooks on system events (JSON on stdin).