Early draft:
## Core: REST API build-out, documentation & distribution
- Support apps and the API-driven frontend effort with cacheable high-traffic entry points and clean content interfaces.
- Expand mediawiki-containers environment to fully support RESTBase, and improve support for development use cases.
## Focus: EventBus & change propagation
- Process subscriptions on this topic from the change propagation service.
- Migrate several jobs (in particular RestbaseUpdateJobs) to EventBus / change propagation service.
- Introduce retry queues
## Focus (2): Dallas switch-over
- Complete EventBus DC switch-over test
- Set-up and deploy a cross-DC service-discovery system: T125069
- Have node.js services use said discovery system
- Automation tooling: start develop tooling for services for fail-over scenarios
Dependencies: #operations, #analytics
## Experiment: Streaming content composition in ServiceWorkers & node.js
- Prototype a streaming page composition solution running in ServiceWorkers (Chrome 50+) and node.js, building on a prototype [by Jake Archibald](https://jakearchibald.com/2016/streams-ftw/).