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Gateway API v1.3.0: Advancements in Request Mirroring, CORS, Gateway Merging, and Retry Budgets

  • Gateway API v1.3.0 introduces enhancements like percentage-based request mirroring, CORS filtering, Gateway merging, and retry budgets.
  • The release includes percentage-based request mirroring allowing users to mirror a subset of requests, enabling testing without impacting all client responses.
  • New experimental features in this release include CORS filtering for cross-origin resource sharing and XListenerSets for merging Listeners.
  • XListenerSets allow shared listeners across Gateways and enable delegation of listener configuration, such as TLS, to applications in different namespaces.
  • Retry budgets (XBackendTrafficPolicy) in v1.3.0 allow configuring limits on client-side retries for a destination Service over a specified interval.
  • To try out these features, install the Experimental channel Gateway API YAMLs and follow the Getting Started Guide.
  • Conformant implementations to Gateway API v1.3 experimental features include Airlock Microgateway, Cilium, Envoy Gateway, and Istio.
  • Users running Kubernetes 1.26 or later can leverage Gateway API v1.3 without needing to upgrade Kubernetes itself.
  • The community is encouraged to get involved, explore use-cases, try existing Gateway controllers, and participate in shaping the future of Gateway API.
  • Gateway API v1.3.0 signifies progress in Kubernetes routing APIs and offers opportunities for community engagement and feature exploration.

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