# Offset Tracking

> A technique for recording how far each consumer has read in a stream, so it resumes there and can replay from earlier.

Record: `lexicon:offset-tracking`
Kind: technique
Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-offset-tracking

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Own Data per Service](https://banes-lab.com/records/lexicon/own-data-per-service.md) and before [Snapshot Compaction](https://banes-lab.com/records/lexicon/snapshot-compaction.md).

## Category

- [Event Messaging Async](https://banes-lab.com/records/lexicon-category/event-messaging-async.md)

## Refactors

- [Event Stream](https://banes-lab.com/records/architecture/event-stream.md)

## Linked from

- [Event / Messaging / Asynchronous Architecture](https://banes-lab.com/ontology/principles/architecture-category-event-messaging-asynchronous-architecture.md)