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Die gleichen Modelle werden von den Requests gemeinsam genutzt, es handelt sich also nicht um ein Modell pro Request, pro Benutzer, oder ähnliches.

Stellen wir uns vor, dass das Laden des Modells **eine ganze Weile dauern** kann, da viele **Daten von der Festplatte** gelesen werden müssen. Sie möchten das also nicht für jeden Request tun.

        this.plugin = plugin;
    }

    @Override
    public void configure(Binder binder) {
        if (plugin.getKey() != null) {
            XmlNode configuration = plugin.getConfiguration();
            if (configuration == null) {
                configuration = XmlNode.newInstance("configuration");
            }
            binder.bind(XmlNode.class)
                    .annotatedWith(Names.named(plugin.getKey()))

        this.extension = extension;
        this.callback = callback;
    }

    @Override
    public void configure(Binder binder) {
        if (extension.getKey() != null) {
            XmlNode configuration = extension.getConfiguration();
            if (configuration == null) {
                configuration = XmlNode.newInstance("configuration");

    The first part is the `scheme`, the second part is the `credentials`.

    For example, in an HTTP Bearer token scheme, the client will send a header
    like:

    ```
    Authorization: Bearer deadbeef12346
    ```

    In this case:

    * `scheme` will have the value `"Bearer"`
    * `credentials` will have the value `"deadbeef12346"`
    """

    scheme: Annotated[
        str,

    response = client.get("/get-credentials", headers={"authorization": "Bearer token"})
    assert response.status_code == 200, response.text
    assert response.json() == {"token": "token", "scopes": ["a", "b"]}


def test_parameterless_with_scopes():
    response = client.get(
        "/parameterless-with-scopes", headers={"authorization": "Bearer token"}
    )
    assert response.status_code == 200, response.text

{* ../../docs_src/path_params_numeric_validations/tutorial003_py39.py hl[7] *}

### Besser mit `Annotated` { #better-with-annotated }

Bedenken Sie, dass Sie, wenn Sie `Annotated` verwenden, da Sie keine Funktionsparameter-Defaultwerte verwenden, dieses Problem nicht haben werden und wahrscheinlich nicht `*` verwenden müssen.

### German instructions about difficult to translate technical terms (written in first person, which is you)

    assert response.status_code == 401, response.text
    assert response.json() == {"detail": "Not authenticated"}
    assert response.headers["WWW-Authenticate"] == "Bearer"


def test_token(client: TestClient):
    response = client.get("/items", headers={"Authorization": "Bearer testtoken"})
    assert response.status_code == 200, response.text
    assert response.json() == {"token": "testtoken"}

### Ist Nebenläufigkeit besser als Parallelität? { #is-concurrency-better-than-parallelism }

Nein! Das ist nicht die Moral der Geschichte.