수신 요청의 유효성이 올바르게 확인되지 않으면 `400`이라는 응답이 전송됩니다.

## `GZipMiddleware`

`Accept-Encoding` 헤더에 `“gzip”`이 포함된 모든 요청에 대해 GZip 응답을 처리합니다.

미들웨어는 표준 응답과 스트리밍 응답을 모두 처리합니다.

{* ../../docs_src/advanced_middleware/tutorial003.py hl[2,6] *}

지원되는 인수는 다음과 같습니다:

     * <li>weekly</li>
     * <li>monthly</li>
     * <li>yearly</li>
     * <li>never</li>
     * </ul>
     * The value "always" should be used to describe documents that change each
     * time they are accessed. The value "never" should be used to describe
     * archived URLs.
     *
     * Please note that the value of this tag is considered a hint and not a

* `allow_methods` - オリジン間リクエストで許可するHTTPメソッドのリスト。デフォルトは `['GET']` です。`['*']`を使用してすべての標準メソッドを許可できます。
* `allow_headers` - オリジン間リクエストでサポートするHTTPリクエストヘッダーのリスト。デフォルトは `[]` です。`['*']`を使用して、すべてのヘッダーを許可できます。CORSリクエストでは、 `Accept` 、 `Accept-Language` 、 `Content-Language` 、 `Content-Type` ヘッダーが常に許可されます。
* `allow_credentials` - オリジン間リクエストでCookieをサポートする必要があることを示します。デフォルトは `False` です。
* `expose_headers` - ブラウザからアクセスできるようにするレスポンスヘッダーを示します。デフォルトは `[]` です。

                        MethodUtil.invoke(method, instance);
                    }
                }
            }

            if (destroyer != null) {
                destroyer.accept(instance);
            }
        }
    }

    /**
     * A definition for a component that can be instantiated on demand.
     * This class handles component creation, dependency injection, and initialization.

Wenn ein eingehender Request nicht korrekt validiert wird, wird eine „400“-Response gesendet.

## `GZipMiddleware`

Verarbeitet GZip-Responses für alle Requests, die `"gzip"` im `Accept-Encoding`-Header enthalten.

Diese Middleware verarbeitet sowohl Standard- als auch Streaming-Responses.

{* ../../docs_src/advanced_middleware/tutorial003.py hl[2,6] *}

Die folgenden Argumente werden unterstützt:

	// GCS storage decompresses a gzipped object by default and returns the data.
	// Refer to https://cloud.google.com/storage/docs/transcoding#decompressive_transcoding
	// Need to set `Accept-Encoding` header to `gzip` when issuing a GetObject call, to be able
	// to download the object in compressed state.
	// Calling ReadCompressed with true accomplishes that.

        final TotalHits totalHits = getClient().get(c -> {
            final SearchRequestBuilder builder = c.prepareSearch(index).setSize(0).setTrackTotalHits(true);
            callback.accept(builder);
            return builder.execute();
        }).getHits().getTotalHits();
        return totalHits != null ? (int) totalHits.value() : 0;
    }

    /**

		w.Header().Set(xhttp.AmzServerSideEncryptionCustomerKeyMD5, r.Header.Get(xhttp.AmzServerSideEncryptionCustomerKeyMD5))
	}

	s3Select.Evaluate(w)

	// Notify object accessed via a GET request.
	sendEvent(eventArgs{
		EventName:    event.ObjectAccessedGet,
		BucketName:   bucket,
		Object:       objInfo,
		ReqParams:    extractReqParams(r),
		RespElements: extractRespElements(w),

- MinIO exports Prometheus compatible data by default which is resource centric as an authorized endpoint at `/minio/v2/metrics/resource`.

All of these can be accessed via Prometheus dashboard. A sample list of exposed metrics along with their definition is available on our public demo server at

```sh
curl https://play.min.io/minio/v2/metrics/cluster
```

observe values produced by writes to the same variable in a different goroutine.
</p>


<h3 id="advice">Advice</h3>

<p>
Programs that modify data being simultaneously accessed by multiple goroutines
must serialize such access.
</p>

<p>
To serialize access, protect the data with channel operations or other synchronization primitives