Inquire about the cost of sending and receiving aws rds data.

When using Amazon RDS, data transfer costs are an important consideration. Here's how data transmission and reception costs are measured for AWS RDS:

1. Data transfer into RDS: Good news - data transferred into your RDS instance is free, regardless of volume or location.

2. Data transfer out of RDS: This is where costs can be incurred, and it depends on a few factors:

   • If the data is transferred between your RDS instance and an EC2 instance in the same Availability Zone, it's free.
   • If data is transferred between Availability Zones for Multi-AZ deployments (for replication purposes), it's also free.
   • However, if data is transferred between your RDS instance and an EC2 instance in different Availability Zones within the same Region, you'll be charged. The standard rate for this is $0.01 per GB.

For your specific scenario of 280GB per day based on MySQL:

If all of this data transfer is happening within the same Availability Zone, you wouldn't incur any data transfer costs. However, if this data is being transferred across different Availability Zones or out to the internet, you would incur charges.

Assuming the worst-case scenario where all 280GB per day is transferred across Availability Zones or out to the internet:

280GB * $0.01/GB = $2.80 per day $2.80 * 30 days = $84 per month (approximate)

Remember, this is a simplified calculation and actual costs may vary based on your specific setup and usage patterns. It's always a good idea to use the AWS Pricing Calculator for more accurate estimates based on your particular configuration.
Sources
Managed Relational Database - Amazon RDS Pricing - Amazon Web Services
DB instance billing for Amazon RDS - Amazon Relational Database Service