openedx / openedx/openedx-events

Handling data redundancy for legacy data with the event bus

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event-bus
Dominant language
Python
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13
Forks
33
Avg merge
14h 37m
Merged PRs (30d)
4

Description

How to we handle the case when services want to use the event bus for data redundancy across services, but there is legacy data that predates the existence of the event?

It's unclear if this ticket would result in any tooling, or just documentation to acknowledge and provide some guidance around this potentially common situation.

It is possible that each situation will need its own way to copy the old data (API, export/import, etc.) that doesn't conflict with the ongoing events, or the events could be rerun from a certain time.

How we handle db timestamps for each event may come into play.

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Research direction

No files, tests, or entry points are named. Start by determining whether this issue should produce tooling or documentation, then review the suggested API or export/import migration paths, event replay, and database timestamps. Done requires an agreed approach for handling legacy data alongside ongoing events.

Written by the indexing model from the issue text.

Assessment

Domain
databases, distributed-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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