String original = "Hello, World!";

        byte[] serialized = serializer.fromObjectToBinary(original);
        assertNotNull(serialized, "Serialized data should not be null");
        assertTrue("Serialized data should not be empty", serialized.length > 0);

        Object deserialized = serializer.fromBinaryToObject(serialized);
        assertNotNull(deserialized, "Deserialized object should not be null");

* Update gogo/protobuf to serialize backward, as to get better performance on deep objects. ([#77355](https://github.com/kubernetes/kubernetes/pull/77355), [@apelisse](https://github.com/apelisse))

 * Methods factored out so that they can be emulated differently in GWT.
 *
 * @author Chris Povirk
 */
@GwtCompatible
@NullMarked
final class Platform {
  /** Serializes and deserializes the specified object. */
  @SuppressWarnings("unchecked")
  static <T> T reserialize(T object) {
    checkNotNull(object);
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    try {
      ObjectOutputStream out = new ObjectOutputStream(bytes);

 * Methods factored out so that they can be emulated differently in GWT.
 *
 * @author Chris Povirk
 */
@GwtCompatible
@NullMarked
final class Platform {
  /** Serializes and deserializes the specified object. */
  @SuppressWarnings("unchecked")
  static <T> T reserialize(T object) {
    checkNotNull(object);
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    try {
      ObjectOutputStream out = new ObjectOutputStream(bytes);

/// tip | Dica

Normalmente você terá um desempenho muito melhor usando um [Modelo de resposta](../tutorial/response-model.md) do que retornando uma `JSONResponse` diretamente, pois assim ele serializa os dados usando o Pydantic, em Rust.

///

## Retornando uma `Response` { #return-a-response }

Você pode retornar uma `Response` ou qualquer subclasse dela.

/// info | Informação

/// tip | Consejo

Normalmente tendrás mucho mejor rendimiento usando un [Response Model](../tutorial/response-model.md) que devolviendo un `JSONResponse` directamente, ya que de esa forma serializa los datos usando Pydantic, en Rust.

///

## Devolver una `Response` { #return-a-response }

De hecho, puedes devolver cualquier `Response` o cualquier subclase de ella.

/// info | Información

* 🗑️ Deprecate `ORJSONResponse` and `UJSONResponse`. PR [#14964](https://github.com/fastapi/fastapi/pull/14964) by [@tiangolo](https://github.com/tiangolo).

## 0.130.0 (2026-02-22)

### Features

* ✨ Serialize JSON response with Pydantic (in Rust), when there's a Pydantic return type or response model. PR [#14962](https://github.com/fastapi/fastapi/pull/14962) by [@tiangolo](https://github.com/tiangolo).

### Sans type de retour { #no-return-type }

Vous pouvez également omettre le type de retour. FastAPI utilisera alors [`jsonable_encoder`](./encoder.md) pour convertir les données en quelque chose qui peut être sérialisé en JSON, puis les enverra en JSON Lines.

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[33:36] hl[34] *}

## Événements envoyés par le serveur (SSE) { #server-sent-events-sse }

		t.Fatal(err)
	}
	e := want.find("abucket/dir2")
	want.replace("abucket/dir2", "", *e)
	var buf bytes.Buffer
	err = want.serializeTo(&buf)
	if err != nil {
		t.Fatal(err)
	}
	t.Log("serialized size:", buf.Len(), "bytes")
	var got dataUsageCache
	err = got.deserialize(&buf)
	if err != nil {
		t.Fatal(err)
	}
	if got.Info.LastUpdate.IsZero() {
		t.Error("lastupdate not set")
	}

    ListenableFuture<@Nullable Void> unused =
        serializer.submitAsync(() -> settableFuture, directExecutor());
    for (int i = 0; i < 25_000; i++) {
      serializer.submit(Callables.<Void>returning(null), directExecutor()).cancel(true);
      unused = serializer.submit(Callables.returning(null), directExecutor());
    }
    ListenableFuture<Integer> stackDepthCheck =