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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_prewarmPostgres extension, which utilizes the above-mentioned sequential scan prefetch feature. The
pg_prewarmextension 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.
- Compute: Updated supported Postgres versions to 14.6 and 15.1, respectively.
- Pageserver: Updated the
storage_syncoperation to make it more robust and reliable while syncing files between Pageservers and S3.
- Safekeeper: Replaced etcd subscriptions with a custom Neon storage broker. 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.