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Amazon RDS for PostgreSQL supports cascaded read replicas for up to 30X more read capacity

Amazon Relational Database Service (Amazon RDS) for PostgreSQL announces support for PostgreSQL 14 with three levels of cascaded read replicas, 5 replicas per instance, supporting a maximum of up to 155 read replicas per source instance. You can now create Single-AZ or Multi-AZ cascaded read replica DB instances in same region or any one cross region from another read replica instance, enabling you to build a more robust disaster recovery architecture.

Source:: Amazon AWS