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docs: link faststream-outbox from the guarantees section #7

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lesnik512 merged 1 commit into from
Oct 29, 2026
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docs: link faststream-outbox from the guarantees section #7

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5 changes: 3 additions & 2 deletions README.md
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Expand Up @@ -159,8 +159,9 @@ What it does not guarantee:
- Exactly-once delivery from end to end. The guarantee covers database effects for one key while
its marker is retained.
- Effects outside PostgreSQL. An HTTP call made in a transaction that later rolls back has already
happened, and the retry makes it again. Send those through a transactional outbox, or make the
receiving side idempotent.
happened, and the retry makes it again. Send those through a transactional outbox such as
[`faststream-outbox`](https://github.com/modern-python/faststream-outbox), or make the receiving
side idempotent.
- Anything after the marker is deleted. Once cleanup removes it, the same key counts as a new
message.
- Under REPEATABLE READ or SERIALIZABLE, a conflicting `claim` raises a serialization failure
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