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[improve][doc]Add introduction of transaction isolation level in the txn-advanced-features.md #712

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[improve][doc]Add introduction of transaction isolation level in the txn-advanced-features.md #712

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Update docs/txn-advanced-features.md
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visortelle authored Feb 29, 2024
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2 changes: 1 addition & 1 deletion docs/txn-advanced-features.md
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Expand Up @@ -40,7 +40,7 @@ If you want to enable authentication with transactions, follow the steps below.
## Select transaction isolation level

To enhance the flexibility of Pulsar transactions, they support two distinct isolation levels:
- READ_COMMITTED, Consumer can only consume all transactional messages which have been committed.
- `READ_COMMITTED`(default): The consumer can only consume all transactional messages that have been committed.
- READ_UNCOMMITTED, Consumer can consume all messages, even transactional messages which have been aborted.
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For different scenarios, they use different subscriptions and choose different isolation levels. One needs transaction, one does not. In general, multiple subscriptions of the same topic do not all
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