Cache Miss will be typical if the item has not been read from the network, is uncacheable, or is past it's 
lifetime based on Response cache headers.

 - CallStart 
 - **CacheMiss**
 - ProxySelectStart
 - ... Standard Events ...
 - CallEnd
        
### Conditional Cache Hit
 

# Using the Request Directly { #using-the-request-directly }

Up to now, you have been declaring the parts of the request that you need with their types.

Taking data from:

* The path as parameters.
* Headers.
* Cookies.
* etc.

And by doing so, **FastAPI** is validating that data, converting it and generating documentation for your API automatically.

But there are situations where you might need to access the `Request` object directly.

            "input": "plumbus"
        }
    ]
}
```

## 總結

你可以使用 **Pydantic 模型**在 **FastAPI** 中聲明**查詢參數**。😎

/// tip

劇透警告：你也可以使用 Pydantic 模型來聲明 cookie 和 headers，但你將在本教學的後面部分閱讀到這部分內容。🤫

		"Total number of requests rejected for auth failure", "type")
	apiRejectedHeaderTotalMD = NewCounterMD(apiRejectedHeaderTotal,
		"Total number of requests rejected for invalid header", "type")
	apiRejectedTimestampTotalMD = NewCounterMD(apiRejectedTimestampTotal,
		"Total number of requests rejected for invalid timestamp", "type")
	apiRejectedInvalidTotalMD = NewCounterMD(apiRejectedInvalidTotal,

          nextRequest = route.address.proxyAuthenticator.authenticate(route, response)
            ?: throw IOException("Failed to authenticate with proxy")

          if ("close".equals(response.header("Connection"), ignoreCase = true)) {
            return nextRequest
          }
        }

        else -> throw IOException("Unexpected response code for CONNECT: ${response.code}")
      }
    }
  }

        when(mockConfig.getMaximumVersion()).thenReturn(DialectVersion.SMB302);
        request = new Smb2NegotiateRequest(mockConfig, 0);

        // When
        int size = request.size();

        // Then - Header (64) + Structure (36) + Dialects (4 * 2) = 108, padded to 8-byte boundary = 112
        assertEquals(112, size);
    }

    @Test
    @DisplayName("Should calculate size correctly with contexts")

	// Allocated DNS config wrapper over etcd client.
	globalDNSConfig dns.Store

	// GlobalKMS initialized KMS configuration
	GlobalKMS *kms.KMS

	// Common lock for various subsystems performing the leader tasks
	globalLeaderLock *sharedLock

	// Auto-Encryption, if enabled, turns any non-SSE-C request
	// into an SSE-S3 request. If enabled a valid, non-empty KMS
	// configuration must be present.

	jwtreq "github.com/golang-jwt/jwt/v4/request"
	"github.com/minio/minio/internal/auth"
	xjwt "github.com/minio/minio/internal/jwt"
	"github.com/minio/pkg/v3/policy"
)

const (
	jwtAlgorithm = "Bearer"

	// Default JWT token for web handlers is one day.
	defaultJWTExpiry = 24 * time.Hour

	// Inter-node JWT token expiry is 100 years approx.
	defaultInterNodeJWTExpiry = 100 * 365 * 24 * time.Hour
)

var (

    * JSON.
    * Cím paraméterek.
    * Query paraméterek.
    * Cookie-k.
    * Header-ök.
    * Formok.
    * Fájlok.
* Kimeneti adatok <abbr title=" más néven: serialization, parsing, marshalling">átváltása</abbr>: Python adatok is típusokról hálózati adatokká:

        // Then - response is created even with null config
        assertNotNull(response);
    }

    @Test
    @DisplayName("Should verify SMB2 header length constant usage")
    void testSmb2HeaderLengthUsage() {
        // Given
        Configuration mockConfig = mock(Configuration.class);