///

여기서는 Pydantic `Settings` 클래스 안에 config `env_file`을 정의하고, 사용하려는 dotenv 파일의 파일명을 값으로 설정합니다.

### `lru_cache`로 `Settings`를 한 번만 생성하기 { #creating-the-settings-only-once-with-lru-cache }

디스크에서 파일을 읽는 것은 보통 비용이 큰(느린) 작업이므로, 각 요청마다 읽기보다는 한 번만 수행하고 동일한 settings 객체를 재사용하는 것이 좋습니다.

하지만 매번 다음을 수행하면:

```Python
Settings()
```

	}
	// A UID is added for every resource
	if len(l.lockUID) != len(rResources)*2+len(wResources)*m {
		t.Fatalf("lockUID len, got %d, want %d + %d", len(l.lockUID), len(rResources)*2, len(wResources)*m)
	}
	// RUnlock once...
	for i, name := range rResources {
		arg := dsync.LockArgs{
			UID:       rUIDs[i*2],
			Resources: []string{name},
			Source:    t.Name(),
			Owner:     "owner",
			Quorum:    &quorum,
		}

 *
 *  * **A signature issued by another certificate's private key.** This mechanism allows a trusted
 *    third-party to endorse a certificate. Third parties should only endorse certificates once
 *    they've confirmed that the owner of the private key is also the owner of the certificate's
 *    other properties.
 *
 * Certificates are signed by other certificates and a sequence of them is called a certificate

   */
  @Test
  public void testSerializable() throws Exception {
    // TODO: when we use @BeforeClass, we can pay the cost of class path scanning only once.
    for (Class<?> classToTest :
        findClassesToTest(loadClassesInPackage(), SERIALIZABLE_TEST_METHOD_NAMES)) {
      if (Serializable.class.isAssignableFrom(classToTest)) {
        try {

   *
   * <p>Cancelling a delegate future propagates to input futures once all the delegates complete,
   * either from cancellation or because an input future has completed. If N futures are passed in,
   * and M delegates are cancelled, the remaining M input futures will be cancelled once N - M of
   * the input futures complete. If all the delegates are cancelled, all the input futures will be
   * too.

    builder.interceptors.toImmutableList()

  /**
   * Returns an immutable list of interceptors that observe a single network request and response.
   * These interceptors must call [Interceptor.Chain.proceed] exactly once: it is an error for
   * a network interceptor to short-circuit or repeat a network request.
   */
  @get:JvmName("networkInterceptors")
  val networkInterceptors: List<Interceptor> =

	// StateConnected is the state when the connection has been established and is considered stable.
	// If the connection is lost, state will switch to StateConnecting.
	StateConnected

	// StateConnectionError is the state once a connection attempt has been made, and it failed.
	// The connection will remain in this stat until the connection has been successfully re-established.
	StateConnectionError

                    {"data": "examples example_examples 2"},
                ],
            ),
        ):
            return item

    # TODO: enable these tests once/if Form(embed=False) is supported
    # TODO: In that case, define if File() should support example/examples too
    # @app.post("/form_example")
    # def form_example(firstname: str = Form(example="John")):

@Tag("Slow")
class RealWebSocketTest {
  // NOTE: Fields are named 'client' and 'server' for cognitive simplicity. This differentiation has
  // zero effect on the behavior of the WebSocket API which is why tests are only written once
  // from the perspective of a single peer.
  private val random = Random(0)
  private val taskFaker = TaskFaker()
  private val sockets = inMemorySocketPair(8192L)

                + "'");
      }
    }
    throw new IndexOutOfBoundsException("Index exceeds specified range");
  }

  /**
   * Helper method to grow the character buffer as needed, this only happens once in a while so it's
   * ok if it's in a method call. If the index passed in is 0 then no copying will be done.
   */
  private static char[] growBuffer(char[] dest, int index, int size) {