RDS Proxy
Terraform module to create AWS RDS Proxy resources
Version
Repository
Charged while it exists
1These set the floor of the bill. They accrue from the moment they are created, even if nothing uses them.
RDS
aws_db_proxyAn hourly charge per vCPU of the database instances behind the proxy, for as long as the proxy exists.
Charged by usage
1These stay near zero until there is traffic, and are the hardest to predict from source alone.
CloudWatch Logs
aws_cloudwatch_log_groupPer GB ingested, then per GB stored for as long as retention keeps it. Retention set to never expire is the usual surprise.
No charge
5These carry no charge of their own, though some of them govern resources that do.
IAM
aws_iam_roleIAM
aws_iam_role_policyRDS
aws_db_proxy_default_target_groupRDS
aws_db_proxy_endpointRDS
aws_db_proxy_targetA setting on another resource rather than a resource that bills. Whatever it governs is where the charge lands.