Glossary
The product repository's CONTEXT.md is the terminology authority. This page is a navigable reader-facing subset and does not add protocol values or new semantics.
| Term | V1 meaning |
|---|---|
deliverAt | Earliest instant at which a destination consumer may become eligible to receive a delayed message. |
actionAt | Earliest instant at which Nereus Delay may start the destination action needed to satisfy deliverAt. |
| Trusted UTC interval | Bounded [earliestUtcNow, latestUtcNow] estimate used for fail-closed timing decisions. |
| Managed Delivery | Default mode with server-side Command, query, cancel, reschedule, quota, audit, and recovery boundaries. |
AUTO_FAST | Explicit SDK permission to choose a prepared managed branch or a certified native Pulsar branch before I/O. |
| Command | Immutable request to Schedule, Cancel, Reschedule, or perform another registered operation. |
| Source Position | Ingress Broker position that orders Client Commands and System Mutations within one route partition. |
| Queued Command | Command durably accepted by the ingress Broker but not yet authoritatively applied by its Delay Shard. |
| Applied Command | Command whose authoritative outcome is durably recorded by the Delay Shard. |
| Delayed Message | Managed logical message created only after a Schedule Command is successfully applied. |
| Destination Lane | Bounded group sharing destination, tenancy, and Ordering Domain characteristics for fairness, retry, and isolation. |
| Recovery Set | Bounded ordered set of published checkpoints from which recovery may choose. |
| Recovery Floor | Oldest checkpoint still permitted by the Recovery Set; resources needed by permitted checkpoints remain protected. |
| Uncertain Enqueue | Outcome where the client cannot prove whether the ingress Broker persisted the prepared command. |
Avoid these substitutions
- Do not call a queued command a scheduled message.
- Do not call
deliverAtpublish time or exact consumer receive time. - Do not call a timeout definitely-not-queued.
- Do not call a local uploaded checkpoint authoritative until it is published in the catalog.
- Do not treat a Lane as an ownership or recovery unit.