ahmcb

We don't actually call the startTask API ourselves, but when we tell an ECS service (using cloudformation) to use a new task definition (which is basically just a new ECR image tag), ECS calls startTask and various other APIs on our behalf.

Hey, great questions, some of the same questions we (the SRE/Platform Team at Plaid) had.

Plaid's rollback job still works the same way for the service using this new deployment, so thankfully, nothing new for engineers at Plaid to learn there.

We also have metrics in Prometheus to indicate which versions of code are running so we can easily verify what is deployed.

WRT the rate limit, we have a great relationship with AWS and Plaid pushes hard on limits which most often AWS is happy to increase for us, but this was a hard limit that could not be raised at the time, but I'm sure they are working on it.