Debido a eso, ahora se recomienda en su lugar usar el `lifespan` como se explicó arriba.

## Detalles Técnicos { #technical-details }

Solo un detalle técnico para los nerds curiosos. 🤓

import org.eclipse.aether.repository.LocalRepositoryManager;
import org.eclipse.aether.repository.RemoteRepository;

/**
 * <strong>Warning:</strong> This is an internal utility class that is only public for technical reasons, it is not part
 * of the public API. In particular, this class can be changed or deleted without prior notice.
 *
 */
@Deprecated
public class LegacyLocalRepositoryManager implements LocalRepositoryManager {

This can be quite noticeable when using `docker compose`. See this Docker Compose FAQ section for more technical details: <a href="https://docs.docker.com/compose/faq/#why-do-my-services-take-10-seconds-to-recreate-or-stop" class="external-link" target="_blank">Why do my services take 10 seconds to recreate or stop?</a>.

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Manages the class realms used by Maven. <strong>Warning:</strong> This is an internal utility class that is only
 * public for technical reasons, it is not part of the public API. In particular, this class can be changed or deleted
 * without prior notice.
 *
 */
@Named
@Singleton
public class DefaultClassRealmManager implements ClassRealmManager {

#### Detalhes Técnicos do `lru_cache` { #lru-cache-technical-details }

`@lru_cache` modifica a função que decora para retornar o mesmo valor que foi retornado na primeira vez, em vez de calculá-lo novamente executando o código da função todas as vezes.

С `openapi_examples`, добавленным в `Body()`, страница `/docs` будет выглядеть так:

<img src="/img/tutorial/body-fields/image02.png">

## Технические детали { #technical-details }

/// tip | Подсказка

Если вы уже используете **FastAPI** версии **0.99.0 или выше**, вы, вероятно, можете **пропустить** эти подробности.

That way, you don't have to "install" your local version to be able to test every change.

/// note | Technical Details

This only happens when you install using this included `requirements.txt` instead of running `pip install fastapi` directly.

          <defaultValue>true</defaultValue>
          <description>
            Whether this proxy configuration is the active one. Note: While the type of this field
            is {@code String} for technical reasons, the semantic type is actually {@code boolean}.
            @see #isActive()
          </description>
          <type>String</type>
        </field>
        <field>
          <name>protocol</name>

Создайте реальный токен доступа JWT и верните его

{* ../../docs_src/security/tutorial004_an_py310.py hl[118:133] *}

### Технические подробности о JWT ключе `sub` { #technical-details-about-the-jwt-subject-sub }

В спецификации JWT говорится, что существует ключ `sub`, содержащий субъект токена.

Crie um token de acesso JWT real e o retorne.

{* ../../docs_src/security/tutorial004_an_py310.py hl[118:133] *}

### Detalhes técnicos sobre o "sujeito" `sub` do JWT { #technical-details-about-the-jwt-subject-sub }

A especificação JWT diz que existe uma chave `sub`, com o sujeito do token.

É opcional usá-la, mas é onde você colocaria a identificação do usuário, então nós estamos usando aqui.