On April 29, 2025, Jepsen published a report about transaction visibility behavior in Amazon Relational Database Service (Amazon RDS) for PostgreSQL  Multi-AZ clusters. We appreciate Jepsen’s thorough analysis and would like to provide additional context about this behavior, which exists both in Amazon RDS and community PostgreSQL. Coincidentally, our own internal testing recently found this same behavior, and we have already been working with the community to propose a fix for this long-standin...