# Eventos de Lifespan

Puedes definir lógica (código) que debería ser ejecutada antes de que la aplicación **inicie**. Esto significa que este código será ejecutado **una vez**, **antes** de que la aplicación **comience a recibir requests**.

De la misma manera, puedes definir lógica (código) que debería ser ejecutada cuando la aplicación esté **cerrándose**. En este caso, este código será ejecutado **una vez**, **después** de haber manejado posiblemente **muchos requests**.

Você também pode incluir um parâmetro `min_length`:

{* ../../docs_src/query_params_str_validations/tutorial003.py hl[10] *}

## Adicionando expressões regulares

Você pode definir uma <abbr title="Uma expressão regular, regex ou regexp é uma sequência de caracteres que define um parâmetro de busca para textos.">expressão regular</abbr> que combine com um padrão esperado pelo parâmetro:

{* ../../docs_src/query_params_str_validations/tutorial004.py hl[11] *}

import jakarta.annotation.Resource;

/**
 * API action for admin file authentication management.
 * Provides RESTful API endpoints for managing file authentication settings in the Fess search engine.
 * File authentication settings define access credentials and permissions for file-based crawling.
 *
 */
public class ApiAdminFileauthAction extends FessApiAdminAction {

    private static final Logger logger = LogManager.getLogger(ApiAdminFileauthAction.class);

Following are advantages for using temporary credentials:

- Eliminates the need to embed long-term credentials with an application.
- Eliminates the need to provide access to buckets and objects without having to define static credentials.
- Temporary credentials have a limited lifetime, there is no need to rotate them or explicitly revoke them. Expired temporary credentials cannot be reused.

## Identity Federation

```

</div>

Se você usar Hypercorn, ele também tem a opção `--root-path`.

/// note | Detalhes Técnicos

A especificação ASGI define um `root_path` para esse caso de uso.

E a opção de linha de comando `--root-path` fornece esse `root_path`.

///

### Verificando o `root_path` atual

See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/

#ifndef TENSORFLOW_C_C_API_EXPERIMENTAL_H_
#define TENSORFLOW_C_C_API_EXPERIMENTAL_H_

#include <stddef.h>
#include <stdint.h>

#include "tensorflow/c/c_api.h"
#include "tensorflow/c/c_api_macros.h"
#include "tensorflow/c/eager/c_api.h"

    # Overriding eigen strong inline speeds up the compiling of
    # conv_grad_ops_3d.cc and conv_ops_3d.cc by 20 minutes,
    # but this also hurts the performance. Let users decide what they want.
    write_to_bazelrc('build --define=override_eigen_strong_inline=true')


def config_info_line(name, help_text):
  """Helper function to print formatted help text for Bazel config options."""

fun String.toCamelCase() = lowercase().replace(Regex("_[a-z]")) { it.value[1].uppercase() }

/**
 * Define clean up rules for the project.
 * See https://www.jetbrains.com/help/teamcity/teamcity-data-clean-up.html#Clean-up+Rules
 *
 * @param historyDays days number of days to store build history .

title %0
@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
@if "%MAVEN_BATCH_ECHO%"=="on" echo %MAVEN_BATCH_ECHO%

@REM Clear/define a variable for any options to be inserted via script
@REM We want to avoid trying to parse the external MAVEN_OPTS variable
SET INTERNAL_MAVEN_OPTS=

@REM Execute a user defined script before this one
if not "%MAVEN_SKIP_RC%"=="" goto skipRc
if exist "%PROGRAMDATA%\mavenrc.cmd" call "%PROGRAMDATA%\mavenrc.cmd" %*

```

### More technical details { #more-technical-details }

You might have noticed that `await` can only be used inside of functions defined with `async def`.

But at the same time, functions defined with `async def` have to be "awaited". So, functions with `async def` can only be called inside of functions defined with `async def` too.

So, about the egg and the chicken, how do you call the first `async` function?