Platform — References

Entity events, notification jobs, history, idempotency, and workers.

This English page mirrors the Vietnamese route and summarizes source specs, code anchors, and related pages. Keep technical names in English because they match the codebase.

What this page covers

Area	Summary
Domain purpose	Entity events, notification jobs, history, idempotency, and workers.
Main readers	Product, support, and engineers who need the same route structure in English.
Source of truth	OpenSpec specs and the current codebase remain authoritative.

Core objects

• EntityEvent
• NotificationJobFactory
• NotificationEventKey
• EntityHistory
• HistoryEventKey
• Worker

Typical flow

1. Publish domain events.
2. Post-process events.
3. Create idempotent notification/history projections.
4. Schedule background workers.
5. Expose observability data.

Where to look in the repo

• EventHandler worker
• Notification workers
• Entity history mappings

Related pages

• Overview
• End-user view
• Concepts
• Architecture
• Codebase flow
• Common cases
• References

If this English summary differs from the Vietnamese page or the code, trust OpenSpec/code first and update the wiki.