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。

### <a href="https://sanic.readthedocs.io/en/latest/" class="external-link" target="_blank">Sanic</a>

`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`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"

		}
		_, err := erasure.Encode(context.Background(), bytes.NewReader(content), writers, buffer, erasure.dataBlocks+1)
		closeBitrotWriters(writers)
		if err != nil {
			panic(err)
		}
	}
}

func BenchmarkErasureEncodeQuick(b *testing.B) {
	const size = 12 * 1024 * 1024
	b.Run(" 00|00 ", func(b *testing.B) { benchmarkErasureEncode(2, 2, 0, 0, size, b) })

		pkgPrefix:   pkgPrefix,
	}
}

// panicOnError is enabled when testing to abort execution on the first error
// and turn it into a recoverable panic.
var panicOnError bool

func (p *Parser) errorf(format string, args ...interface{}) {
	if panicOnError {
		panic(fmt.Errorf(format, args...))
	}
	if p.lineNum == p.errorLine {
		// Only one error per line.
		return
	}
	p.errorLine = p.lineNum
	if p.lex != nil {

// https://www.awsarchitectureblog.com/2015/03/backoff.html
func exponentialBackoffWait(r *rand.Rand, unit, cap 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
		}

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

// existing file, such as a binary executable.
// It must be called before any data is written.
func (w *Writer) SetOffset(n int64) {
	if w.cw.count != 0 {
		panic("zip: SetOffset called after data was written")
	}
	w.cw.count = n
}

// Flush flushes any buffered data to the underlying writer.
// Calling Flush is not normally necessary; calling Close is sufficient.

		}
		if _, err = erasure.Decode(context.Background(), bytes.NewBuffer(content[:0]), bitrotReaders, 0, size, size, nil); err != nil {
			panic(err)
		}
		closeBitrotReaders(bitrotReaders)
	}
}

func BenchmarkErasureDecodeQuick(b *testing.B) {
	const size = 12 * 1024 * 1024

* Be very, very careful.
* The cache has a builtin test, enabled with `UNSAFE_PILOT_ENABLE_RUNTIME_ASSERTIONS=true`, that runs in CI. This will panic if any key is written to with a different value.

#### Partial Computations

// NewGetObjectReader creates a new GetObjectReader. The cleanUpFns
// are called on Close() in FIFO order as passed in ObjReadFn(). NOTE: It is
// assumed that clean up functions do not panic (otherwise, they may
// not all run!).
func NewGetObjectReader(rs *HTTPRangeSpec, oi ObjectInfo, opts ObjectOptions) (
	fn ObjReaderFn, off, length int64, err error,
) {

!!! check "😮 **FastAPI** "
    ⚙️ 🐍 🆎 ✔️ 👑 👨‍🎨 🐕‍🦺.

    ✔️ 🏋️ 🔗 💉 ⚙️. 🔎 🌌 📉 📟 🔁.

### <a href="https://sanic.readthedocs.io/en/latest/" class="external-link" target="_blank">🤣</a>

⚫️ 🕐 🥇 📶 ⏩ 🐍 🛠️ ⚓️ 🔛 `asyncio`. ⚫️ ⚒ 📶 🎏 🏺.

!!! note "📡 ℹ"