### Existing object replication

func contextCanceled(ctx context.Context) bool {
	select {
	case <-ctx.Done():
		return true
	default:
		return false
	}
}

// bgContext returns a context that can be used for async operations.
// Cancellation/timeouts are removed, so parent cancellations/timeout will
// not propagate from parent.
// Context values are preserved.
// This can be used for goroutines that live beyond the parent context.

### Sync/Async Replication

By default, replication is completed asynchronously. If synchronous replication is desired, set the --sync flag while adding a

{!../../docs_src/bigger_applications/app/routers/items.py!}
```

Da der Pfad jeder *Pfadoperation* mit `/` beginnen muss, wie in:

```Python hl_lines="1"
@router.get("/{item_id}")
async def read_item(item_id: str):
    ...
```

... darf das Präfix kein abschließendes `/` enthalten.

Das Präfix lautet in diesem Fall also `/items`.

b(),A=gb(),B=function(a,b){return a===b&&(l=!0),0},C="undefined",D=1<<31,E={}.hasOwnProperty,F=[],G=F.pop,H=F.push,I=F.push,J=F.slice,K=F.indexOf||function(a){for(var b=0,c=this.length;c>b;b++)if(this[b]===a)return b;return-1},L="checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",M="[\\x20\\t\\r\\n\\f]",N="(?:\\\\.|[\\w-]|[^\\x00-\\xa0])+",O=N.replace("w","w#"),P="\\["+M+"*("+N+")(?:"+M+"*([*^$|!~]?=)"+M+"*(?:'((?:\\\\.|[^\...

th-1).toString(16)+" ":"\\"+e}ce.escapeSelector=function(e){return(e+"").replace(f,p)};var ye=C,me=s;!function(){var e,b,w,o,a,T,r,C,d,i,k=me,S=ce.expando,E=0,n=0,s=W(),c=W(),u=W(),h=W(),l=function(e,t){return e===t&&(a=!0),0},f="checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",t="(?:\\\\[\\da-fA-F]{1,6}"+ge+"?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+",p="\\["+ge+"*("+t+")(?:"+ge+"*([*^$|!~]?=)"+ge+"*(?:'((?:\\\\.|[^\\\\'])*...

{!../../docs_src/bigger_applications/app/routers/items.py!}
```

Como o caminho de cada *operação de rota* deve começar com `/`, como em:

```Python hl_lines="1"
@router.get("/{item_id}")
async def read_item(item_id: str):
    ...
```

...o prefixo não deve incluir um `/` final.

Então, o prefixo neste caso é `/items`.

                          in_flight_nodes_limit);
}

void TFE_DeleteExecutor(TFE_Executor* executor) { delete executor; }

bool TFE_ExecutorIsAsync(TFE_Executor* executor) {
  return executor->executor()->Async();
}

void TFE_ExecutorWaitForAllPendingNodes(TFE_Executor* executor,
                                        TF_Status* status) {
  status->status = executor->executor()->WaitForAllPendingNodes();
}

      }

    fun build(): Http2Connection {
      return Http2Connection(this)
    }
  }

  /**
   * Methods in this class must not lock FrameWriter. If a method needs to write a frame, create an
   * async task to do so.
   */
  inner class ReaderRunnable internal constructor(
    internal val reader: Http2Reader,
  ) : Http2Reader.Handler, () -> Unit {
    override fun invoke() {

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。

///