# Changelog 2022 12 08

### Fixes & improvements

- Compute: Added support for sequential scan prefetch, which reduces round trips between Computes and Pageservers. Sequential scan prefetch allows fetching numerous pages at once instead of one by one, improving I/O performance for operations such as table scans.
- Compute: Added support for the `pg_prewarm` Postgres extension, which utilizes the above-mentioned sequential scan prefetch feature. The `pg_prewarm` extension provides a convenient way to load data into the Postgres buffer cache after a cold start. For information about Postgres extensions supported by Neon, see [Postgres extensions](/guides/postgres-extensions-pg-extensions).
- Compute: Updated supported Postgres versions to 14.6 and 15.1, respectively.
- Pageserver: Updated the `storage_sync` operation to make it more robust and reliable while syncing files between Pageservers and S3.
- Safekeeper: Replaced [etcd](https://etcd.io/) subscriptions with a custom Neon [storage broker](https://github.com/neondatabase/neon/blob/main/docs/storage_broker.md). The storage broker allows Safekeepers and Pageservers to learn which storage node holds a timeline and the status of a timeline while avoiding too many connections between nodes.

## Related pages

- [Add users and authentication](./auth-index.md)
- [AI tools for Agents](./ai-agents-on-neon-index.md)
- [APIs & SDKs](./apis-sdks-index.md)
- [Changelog](../changelog.md)
- [Explore the full platform: functions, object storage, AI Gateway, and more](./neon-docs-index.md)
- [Integrating with Neon](./building-on-neon-index.md)
- [Lakebase Postgres](./postgres-index.md)
- [More](./more-index.md)
- [Neon AI Gateway](./ai-gateway-index.md)
- [Neon community](./community-index.md)

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