state["sync_bg"] = (
            f"sync_bg set - b: {state['context_b']} - a: {state['context_a']}"
        )

    tasks.add_task(bg, state)
    return state


@app.middleware("http")
async def middleware(request, call_next):
    response: StreamingResponse = await call_next(request)
    response.headers["x-state"] = json.dumps(state.copy())
    return response


client = TestClient(app)

* код
* коммит
* менеджер контекста
* корутина
* сессия базы данных
* диск
* домен
* движок
* фиктивный X
* метод HTTP GET
* элемент
* библиотека
* lifespan
* блокировка
* middleware (Промежуточный слой)
* мобильное приложение
* модуль
* монтирование
* сеть
* origin (источник)
* переопределение
* полезная нагрузка
* процессор
* свойство
* прокси

* die Coroutine
* die Datenbanksession
* die Festplatte
* die Domain
* die Engine
* das Fake-X
* die HTTP-GET-Methode
* das Item
* die Bibliothek
* der Lifespan
* der Lock
* die Middleware
* die Mobile-Anwendung
* das Modul
* das Mounten
* das Netzwerk
* das Origin
* Die Überschreibung
* die Payload
* der Prozessor
* die Property
* der Proxy
* der Pull Request

* a corrotina
* a sessão do banco de dados
* o disco
* o domínio
* o mecanismo
* o X falso
* o método HTTP GET
* o item
* a biblioteca
* o lifespan
* o bloqueio
* o middleware
* a aplicação mobile
* o módulo
* a montagem
* a rede
* a origem
* a sobrescrita
* a carga útil
* o processador
* a propriedade
* o proxy
* o pull request
* a consulta
* a RAM

* the coroutine
* the database session
* the disk
* the domain
* the engine
* the fake X
* the HTTP GET method
* the item
* the library
* the lifespan
* the lock
* the middleware
* the mobile application
* the module
* the mounting
* the network
* the origin
* the override
* the payload
* the processor
* the property
* the proxy
* the pull request
* the query

* la corrutina
* la sesión de base de datos
* el disco
* el dominio
* el motor
* el X falso
* el método HTTP GET
* el ítem
* el paquete
* el lifespan
* el bloqueo
* el middleware
* la aplicación móvil
* el módulo
* el montaje
* la red
* el origen
* el override
* el payload
* el procesador
* la propiedad
* el proxy
* el pull request
* la query
* la RAM

```TOML hl_lines="5  12  20"
[http]
  [http.middlewares]

    [http.middlewares.api-stripprefix.stripPrefix]
      prefixes = ["/api/v1"]

  [http.routers]

    [http.routers.app-http]
      entryPoints = ["http"]
      service = "app"
      rule = "PathPrefix(`/api/v1`)"
      middlewares = ["api-stripprefix"]

  [http.services]

    [http.services.app]

```TOML hl_lines="5  12  20"
[http]
  [http.middlewares]

    [http.middlewares.api-stripprefix.stripPrefix]
      prefixes = ["/api/v1"]

  [http.routers]

    [http.routers.app-http]
      entryPoints = ["http"]
      service = "app"
      rule = "PathPrefix(`/api/v1`)"
      middlewares = ["api-stripprefix"]

  [http.services]

    [http.services.app]

///

接下来，创建 `routes.toml`：

```TOML hl_lines="5  12  20"
[http]
  [http.middlewares]

    [http.middlewares.api-stripprefix.stripPrefix]
      prefixes = ["/api/v1"]

  [http.routers]

    [http.routers.app-http]
      entryPoints = ["http"]
      service = "app"
      rule = "PathPrefix(`/api/v1`)"
      middlewares = ["api-stripprefix"]

  [http.services]

    [http.services.app]

```TOML hl_lines="5  12  20"
[http]
  [http.middlewares]

    [http.middlewares.api-stripprefix.stripPrefix]
      prefixes = ["/api/v1"]

  [http.routers]

    [http.routers.app-http]
      entryPoints = ["http"]
      service = "app"
      rule = "PathPrefix(`/api/v1`)"
      middlewares = ["api-stripprefix"]

  [http.services]

    [http.services.app]