An overview of the progressive delivery principle by Buoyant.

There's also a comparison between Flagger and Argo Rollouts, which are probably the most famous (if not the only) tools designed for progressive delivery.

Now, Buoyant is the company behind Linkerd. So, obviously, their examples are based on Linkerd. However, you don't need any service mesh to adopt this technique. Service mesh will only help you with smarter traffic splitting.

Also, there's an error in this article: it claims that Flagger works with existing deployments, while Argo Rollouts requires its special CRD, which is only partially true. Argo Rollouts can also work with existing Deployment objects. So, in these regards, both tools are the same.

If you prefer a video format, I would also suggest watching a talk about progressive delivery by Carlos Sanchez at Fosdem 2024. There you can see Argo Rollouts in action.

#cicd