Gateway Api

Direct Server Return (DSR) is a networking technique that allows a backend server to learn the original request’s source IP address and respond directly, even behind a load balancer. This results in reduced latency and improved throughput, as well as the ability to filter traffic based on client IP.

In this article we’ll take a look at how to proxy external services through the Kubernetes Gateway API. There are of course more lightweight methods to proxy services, but once you already have the proverbial hammer, why not treat everything like a nail?

In the Gateway API SIG’s own words, If you’re familiar with the older Ingress API, you can think of the Gateway API as analogous to a more-expressive next-generation version of that API.

Archived: This is an archived article, see the updated article here. In the Gateway API SIG’s own words,