Integration with RDS

[maciejwalkowiak]

This issue collects all the requirements for RDS support in Spring Cloud AWS 3.0 (based on AWS SDK v2).

The key feature in RDS integration is support for read replicas:

• use RDS read replicas for readOnly connections (transactions started with @Transactional(readOnly=true)

Additionally we need to support:

• IAM Database authentication for RDS #320
• failover

Both can be achieved with official drivers:

• https://github.com/awslabs/aws-mysql-jdbc
• https://github.com/awslabs/aws-postgresql-jdbc

Regarding read replicas support, in addition to what has been offered in 2.x we must support:

• ability to choose connection pool (in 2.x only Tomcat pool is supported)
• ability to choose JDBC driver
• Add support for passing query parameters to JDBC url #679
• Aurora

To research:

• should we support RDS proxy?
• should we support Aurora Serverless?

[srikanthnutigattu-tomo]

Bump! Any plans to support this?

[maciejwalkowiak]

@srikanthnutigattu-tomo yes, still planned for 3.0, but the design work still pending. Is there something specific you are looking for in this integration or you would like to share ideas?

[srikanthnutigattu-tomo]

Specifically looking for support of Read replicas on AWS Postgres Aurora RDS. Currently all queries go to read/write, which no helping autoscaling of RDS.

[maciejwalkowiak]

Understood. Yes it is planned. For the time being, you can follow Vlad's tutorial: https://vladmihalcea.com/read-write-read-only-transaction-routing-spring/

[frankjkelly]

Excited for this!