![]() All replicas in a single region can be synchronous, even in different AZs, since they all share the same replicated storage. of PostgreSQL compatibility to their cloud-native Amazon Aurora managed. If, when you said "region," you were actually referring to availability zones, then that is much more straightforward, since the backing store of Aurora instances is replicated across 3 availability zones within the region, and replication is synchronous. Today at Google I/O, we’re thrilled to announce the preview of AlloyDB for PostgreSQL, a fully-managed, PostgreSQL-compatible database service that provides a powerful option for modernizing. PostgreSQL also known as Postgres, is a free and open-source relational database management. ![]() but a cross-region replica is not for zero downtime or failover, anyway - it's only for geo/latency-based read scale-out or disaster recovery, because once you promote the replica, the original master has to be abandoned, because replication is one-way. To match updates by the open source community to older PostgreSQL major versions, Amazon Aurora has also announced compatibility and support for 9.6.22, 10.17, 11.12, and 12.7. You can expect to see a higher level of lag time for any Read Replica that is in a different AWS Region than the source instance, due to the longer network channels between regional data centers.Īdditionally, cross-region replicas for Aurora/Postgres are not yet available.Ĭross-region replicas are only available for Aurora/MySQL. Amazon RDS Amazon RDS Custom Amazon RDS on AWS Outposts Enlarge and read image description. ![]() Cross-region replication is always asynchronous. Choose from seven popular engines Amazon Aurora with MySQL compatibility, Amazon Aurora with PostgreSQL compatibility, MySQL, MariaDB, PostgreSQL, Oracle, and SQL Server and deploy on-premises with Amazon RDS on AWS Outposts. This project uses 3 RDS databases to illustrate the differences between using each of them: MySQL PostgreSQL MySQL-compatible Amazon Aurora. ![]() No RDS product supports "real-time" replication across regions. ![]()
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