Linkerd is a service mesh for cloud-native microservices that provides failure resiliency, observability, and security.
- The Gateway API standardizes some of the Ingress stuff and is mostly for North-South traffic.
- Linkerd is working on adapting the HTTP route resources to make sense for East-West traffic.
- If all pods start returning 500 errors all at once, they will all be taken out of circulation and apply the back-off penalty.
- Linkerd does not yet support IPv6, but it is in the books.
- EBPF is a cool technology, but it cannot do any State Management inside of it, making it difficult to handle circuit breaking, retries, and timeouts.
- Linkerd supports EBPF, but when it comes to doing service mesh things, there is no substitute for the sidecar proxy.