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CloudNativePG 1.24 introduces a highly customisable approach to managing PostgreSQL synchronous replication through the new .spec.postgresql.synchronous stanza. In this article, I’ll guide you through configuring synchronous replication within a single Kubernetes cluster and across multiple clusters. I’ll explore quorum-based and priority-based replication methods, highlighting their benefits and trade-offs. Additionally, I’ll explain how to adjust the synchronous_commit setting to strike the right balance between data durability and performance.