Etcd / Notification Archival
Evaluate interdependencies between our service and the archival, eg usecases:
- Channel is deleted -> (channel is soft deleted but notifications are hard or soft deleted or remain in created status?)
- Etcd data remains forever ? (need prepare job to cleanup after 13 months)
- Archive data remains forever ?
- Archival hard deletes notifications, etcd data remain - do we need to worry with id reuse?