Run performance tests on canaries and incremental rollouts
Problem to solve
Deployments are risky. One way to reduce risk is to check for performance impact before you deploy, for example by running performance tests on review apps. But since review apps are never exactly like production, there's still risk of performance challenges only appearing in production. Using canaries or incremental rollouts can further reduce your risk, but only if you actually test out the canary and incremental rollout well enough.
Further details
We currently only run performance tests on review apps and fully deployed production. We should also run it on canaries and incremental rollouts (or maybe just the first increment).
Proposal
What does success look like, and how can we measure that?
(If no way to measure success, link to an issue that will implement a way to measure this)