关于超出AWS SES每秒邮件发送配额后果的技术咨询

Great question – this is a common point of confusion since the official docs focus heavily on the 24-hour send quota but gloss over the real-time rate limit behavior. Let’s break down exactly what happens when you hit that per-second send rate cap:

• First, the good news: Traffic spikes that exceed your maximum send rate won’t get immediately rejected or lost. AWS SES will automatically queue the excess messages for you.
• The built-in queue acts as a buffer: SES will process these queued emails at a pace that stays within your allowed send rate, so you don’t have to implement your own queuing logic for short-term traffic bursts.
• Caveat for sustained overages: If you keep sending at a rate above your limit for an extended period, the queue can fill up. Once the queue reaches its capacity threshold, any additional messages will be rejected with a Throttling error (similar to what happens when you hit the 24-hour quota).
• Key difference from 24-hour quota: When you exceed your daily send quota, SES rejects messages immediately with no queuing. Rate limit overages only trigger rejections if the backlog becomes too large.

To stay on top of this, you can monitor CloudWatch metrics like QueueLength (to track how many messages are waiting) and Throttles (to see when rejections start happening) to adjust your sending patterns accordingly.

内容的提问来源于stack exchange，提问作者Salvatore Iovene