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[Direct PR][release note]: Atomic Distributed Transaction #17079

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Oct 28, 2024
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[Direct PR][release note]: Atomic Distributed Transaction #17079

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release note: Atomic Distributed Transaction
harshit-gangal Oct 27, 2024
dc5a8a0
update doc link: https://github.com/vitessio/website/pull/1873
harshit-gangal Oct 28, 2024
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12 changes: 12 additions & 0 deletions changelog/21.0/21.0.0/summary.md
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Expand Up @@ -8,6 +8,7 @@
- [Deletion of deprecated metrics](#metric-deletion)
- [Deprecated Metrics](#deprecations-metrics)
- **[Traffic Mirroring](#traffic-mirroring)**
- **[Atomic Distributed Transaction Support](#atomic-transaction)**
- **[New VTGate Shutdown Behavior](#new-vtgate-shutdown-behavior)**
- **[Tablet Throttler: Multi-Metric support](#tablet-throttler)**
- **[Allow Cross Cell Promotion in PRS](#allow-cross-cell)**
Expand Down Expand Up @@ -79,6 +80,17 @@ $ vtctldclient --server :15999 MoveTables --target-keyspace customer --workflow

Mirror rules can be inspected with `GetMirrorRules`.

### <a id="atomic-transaction"/>Atomic Distributed Transaction Support</a>

We have introduced atomic distributed transactions as an experimental feature.
Users can now run multi-shard transactions with stronger guarantees.
Vitess now provides two modes of transactional guarantees for multi-shard transactions: Best Effort and Atomic.
These can be selected based on the user’s requirements and the trade-offs they are willing to make.

Follow the documentation to enable [Atomic Distributed Transaction](https://vitess.io/docs/21.0/reference/features/two-phase-commit/)

For more details on the implementation and trade-offs, please refer to the [RFC](https://github.com/vitessio/vitess/issues/16245)

### <a id="new-vtgate-shutdown-behavior"/>New VTGate Shutdown Behavior</a>

We added a new option to VTGate to disallow new connections while VTGate is shutting down,
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