RDS数据传输花费了公共端点与私有端点 [英] RDS data transfer costs public vs private endpoints

问题描述

鉴于RDS和访问它的实体都在同一可用区中，通过公共端点(公共子网中的RDS)与RDS实例进行通信会比在私有子网中产生更高的数据传输成本吗?

Would communicating with an RDS instance through a public endpoint (RDS in a public subnet) incur more data transfer costs vs one in a private subnet, given that both RDS and the entity accessing it are in the same AZ?

推荐答案

在VPC中使用时，Amazon RDS数据库实例的 DNS名称应该解析为私有IP地址.因此，唯一可能的费用是AZ之间的 2¢/GB (1美分和1美分).

The DNS Name of the Amazon RDS db instance should resolve to a private IP address when used within the VPC. Thus, the only potential charge is 2¢/GB between AZs (1¢ in and 1¢ out).

如果它们都位于相同的可用区中，则无需支付数据传输费用.

If they are both in the same AZ, there should be no data transfer charge.

通过公共IP地址访问将产生1¢/GB的费用，但这不会与"AZ之间"费用加倍收取费用.因此，相同的潜在成本.

Accessing via a public IP address would incur 1¢/GB, but this does not doubly-charge with the "between AZ" charge. So, same potential cost.

如果从Internet访问RDS实例，则出站数据将收取额外的数据传输费用.

If accessing the RDS instance from the Internet, then additional Data Transfer charges would apply for outbound data.

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