Concurrency is different than parallelism. And it is better on **specific** scenarios that involve a lot of waiting. Because of that, it generally is a lot better than parallelism for web application development. But not for everything.

So, to balance that out, imagine the following short story:

> You have to clean a big, dirty house.

*Yep, that's the whole story*.

---

* Add support for Azure internal load balancer. ([#45690](https://github.com/kubernetes/kubernetes/pull/45690), [@jdumars](https://github.com/jdumars))

unauthenticated. The mitigation may be disabled by setting the `UnauthenticatedHTTP2DOSMitigation` feature gate to `false` (it is enabled by default). An API server fronted by an L7 load balancer that already mitigates these http/2 attacks may choose to disable the kube-apiserver mitigation to avoid disrupting load balancer -> kube-apiserver connections if http/2 requests from multiple clients share the same backend connection. An API server on a private network may opt to disable the kube-apiserver mitigation...

- For GCE cluster provider, fix bug of not being able to create internal type load balancer for clusters with more than 1000 nodes in a single zone. ([#89902](https://github.com/kubernetes/kubernetes/pull/89902), [@wojtek-t](https://github.com/wojtek-t)) [SIG Cloud Provider, Network and Scalability]

oadbalancer-service ## #loadBalancerSourceRa: # - 10.10.10.0/24 loadBalancerSourceRa: [] ## service.externalTrafficPolic minio service external traffic policy ## ref http://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip ## externalTrafficPolic: Cluster ## Configure Ingress based on the documentation here: https://kubernetes.io/docs/concepts/services-networking/ingress/ ## ingress: enabled: false ingressClassName: ~ labels: {} # ...

oadbalancer-service ## #loadBalancerSourceRa: # - 10.10.10.0/24 loadBalancerSourceRa: [] ## service.externalTrafficPolic minio service external traffic policy ## ref http://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip ## externalTrafficPolic: Cluster ## Configure Ingress based on the documentation here: https://kubernetes.io/docs/concepts/services-networking/ingress/ ## ingress: enabled: false ingressClassName: ~ labels: {} # ...

oadbalancer-service ## #loadBalancerSourceRa: # - 10.10.10.0/24 loadBalancerSourceRa: [] ## service.externalTrafficPolic minio service external traffic policy ## ref http://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip ## externalTrafficPolic: Cluster ## Configure Ingress based on the documentation here: https://kubernetes.io/docs/concepts/services-networking/ingress/ ## ingress: enabled: false ingressClassName: ~ labels: {} # ...

unauthenticated. The mitigation may be enabled by setting the `UnauthenticatedHTTP2DOSMitigation` feature gate to `true` (it is disabled by default). An API server fronted by an L7 load balancer that already mitigates these http/2 attacks may choose not to enable the kube-apiserver mitigation to avoid disrupting load balancer → kube-apiserver connections if http/2 requests from multiple clients share the same backend connection. An API server on a private network may choose not to enable the kube-apiserver...

// contains reports whether c is inside the set.
func (as *asciiSet) contains(c byte) bool {
	return as[c]
}

// shouldUseASCIISet returns whether to use the lookup table optimization.
// The threshold of 8 bytes balances initialization cost against per-byte
// search cost, performing well across all charset sizes.
//
// More complex heuristics (e.g., different thresholds per charset size)

### Provider-specific Notes

#### Various

   Core changes:

  * Support for load balancers with source ranges

#### AWS

Core changes:

  * Support for ELBs with complex configurations: better subnet selection with
multiple subnets, and internal ELBs
  * Support for VPCs with private dns names