Lambda with RDS
https://www.jeremydaly.com/reuse-database-connections-aws-lambda/
https://www.jeremydaly.com/manage-rds-connections-aws-lambda/
Good part:
database connection management recommendation
Added Value:
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/rds-proxy.html
(This seems like a DB connection pool management)
