* Fixes a panic in kube-controller-manager cleaning up bootstrap tokens ([#82887](https://github.com/kubernetes/kubernetes/pull/82887), [@tedyu](https://github.com/tedyu))
* Fixed a scheduler panic when using PodAffinity. ([#82841](https://github.com/kubernetes/kubernetes/pull/82841), [@Huang-Wei](https://github.com/Huang-Wei))

強力な依存性注入の仕組みを持ち、コードの繰り返しを最小化する方法を見つけた点。

///

### [Sanic](https://sanic.readthedocs.io/en/latest/) { #sanic }

`asyncio`に基づいた、Pythonのフレームワークの中でも非常に高速なものの一つです。Flaskと非常に似た作りになっています。

/// note | 技術詳細

Pythonの`asyncio`ループの代わりに、[`uvloop`](https://github.com/MagicStack/uvloop)が利用されています。それにより、非常に高速です。

`Uvicorn`と`Starlette`に明らかなインスピレーションを与えており、それらは現在オープンなベンチマークにおいてSanicより高速です。

///

/// check | **FastAPI**へ与えたインスピレーション

		defer func() {
			if debugPrint {
				fmt.Printf("grid: Handler returning from: %v %v\n", req.Method, req.URL)
			}
			if r := recover(); r != nil {
				debug.PrintStack()
				err := fmt.Errorf("grid: panic: %v\n", r)
				gridLogIf(context.Background(), err, err.Error())
				w.WriteHeader(http.StatusInternalServerError)
			}
		}()
		if debugPrint {
			fmt.Printf("grid: Got a %s request for: %v\n", req.Method, req.URL)

		t.Fatalf("values differs from expected")
	}
}

// func TestExpirableMultipleClose(_ *testing.T) {
//	lc :=lru.NewLRU[string, string](10, nil, 0)
//	lc.Close()
//	// should not panic
//	lc.Close()
// }

func TestLRUWithPurge(t *testing.T) {
	var evicted []string
	lc := lru.NewLRU(10, func(key string, value string) { evicted = append(evicted, key, value) }, 150*time.Millisecond)

		copy(b.toSTAR().trailer(), trailerSTAR)
	case format.has(FormatUSTAR | FormatPAX):
		copy(b.toUSTAR().magic(), magicUSTAR)
		copy(b.toUSTAR().version(), versionUSTAR)
	default:
		panic("invalid format")
	}

	// Update checksum.
	// This field is special in that it is terminated by a NULL then space.
	var f formatter
	field := b.toV7().chksum()

* Fix issue with PodDisruptionBudgets in which `minAvailable` specified as a percentage did not work with StatefulSet Pods. ([#39454](https://github.com/kubernetes/kubernetes/pull/39454), [@foxish](https://github.com/foxish))
* Fix panic in vSphere cloud provider ([#38423](https://github.com/kubernetes/kubernetes/pull/38423), [@BaluDontu](https://github.com/BaluDontu))

// https://www.awsarchitectureblog.com/2015/03/backoff.html
func exponentialBackoffWait(r *rand.Rand, unit, maxSleep time.Duration) func(uint) time.Duration {
	if unit > time.Hour {
		// Protect against integer overflow
		panic("unit cannot exceed one hour")
	}
	return func(attempt uint) time.Duration {
		if attempt > 16 {
			// Protect against integer overflow
			attempt = 16
		}

			name:   name,
			args:   nil,
			tokens: Tokenize(value),
		}
	}
	return macros
}

var panicOnError bool // For testing.

func (in *Input) Error(args ...any) {
	if panicOnError {
		panic(fmt.Errorf("%s:%d: %s", in.File(), in.Line(), fmt.Sprintln(args...)))
	}
	fmt.Fprintf(os.Stderr, "%s:%d: %s", in.File(), in.Line(), fmt.Sprintln(args...))
	os.Exit(1)
}

If <code>list</code> pointed to a cyclic list,
then the original program would never access <code>*p</code> or <code>*q</code>,
but the rewritten program would.
(Moving `*p` ahead would be safe if the compiler can prove `*p` will not panic;
moving `*q` ahead would also require the compiler proving that no other
goroutine can access `*q`.)
</p>

<p>
Not introducing data races also means not assuming that called functions

* apiserver: fixes handling and logging of panics in REST handlers to prevent crashes ([#71076](https://github.com/kubernetes/kubernetes/pull/71076), [@liggitt](https://github.com/liggitt))