PlanetScale

Introducing Dedicated Read Replicas for Postgres

Oct 6, 2026Etienne Berube, Nick Holden, Chris Sinjakli
Introducing Dedicated Read Replicas for Postgres
SummaryAI, from the source post

This post introduces dedicated read replicas for Postgres databases, allowing users to create, size, and connect to additional Postgres instances that replicate asynchronously from the primary cluster. This feature addresses use cases such as reducing read latency for globally distributed clients by placing replicas in different regions, and isolating specific workloads (e.g., vector search, analytics) within the same region by configuring individual replicas with distinct instance sizes and disk characteristics.

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