这部分代码很常规，您对绝大多数代码应该都比较熟悉了：

{* ../../docs_src/openapi_callbacks/tutorial001.py hl[10:14,37:54] *}

/// tip | 提示

`callback_url` 查询参数使用 Pydantic 的 <a href="https://pydantic-docs.helpmanual.io/usage/types/#urls" class="external-link" target="_blank">URL</a> 类型。

///

此处唯一比较新的内容是*路径操作装饰器*中的 `callbacks=invoices_callback_router.routes` 参数，下文介绍。

## 存档回调

实际的回调代码高度依赖于您自己的 API 应用。

并且可能每个应用都各不相同。

Die meisten dieser Einstellungen sind variabel (können sich ändern), wie z. B. Datenbank-URLs. Und vieles könnten schützenswerte, geheime Daten sein.

Aus diesem Grund werden diese üblicherweise in Umgebungsvariablen bereitgestellt, die von der Anwendung gelesen werden.

/// tip | Tipp

success.upload_design_file = Updated {0}.
success.update_design_jsp_file = Updated {0}.
success.create_crawling_config_at_wizard = Created a crawling config {0}.
success.failure_url_delete_all = Deleted failure URLs.
success.delete_file = Deleted {0} file.
success.job_started = Started a job: {0}.
success.job_stopped = Stopped a job: {0}.
success.upload_synonym_file = Uploaded a synonym file.

success.upload_design_file = Updated {0}.
success.update_design_jsp_file = Updated {0}.
success.create_crawling_config_at_wizard = Created a crawling config {0}.
success.failure_url_delete_all = Deleted failure URLs.
success.delete_file = Deleted {0} file.
success.job_started = Started a job: {0}.
success.job_stopped = Stopped a job: {0}.
success.upload_synonym_file = Uploaded a synonym file.

  }

  @Test
  fun cache() {
    val cache = Cache(File("/cache/"), Integer.MAX_VALUE.toLong())
    cache.initialize()
    cache.delete()
    cache.evictAll()
    val urls: MutableIterator<String> = cache.urls()
    val writeAbortCount: Int = cache.writeAbortCount()
    val writeSuccessCount: Int = cache.writeSuccessCount()
    val size: Long = cache.size()
    val maxSize: Long = cache.maxSize()

    `DurationUnit` which was a typealias in 1.5.x.
 *  Upgrade: [Okio 3.2.0][okio_3_2_0].


## Version 5.0.0-alpha.9

_2022-06-16_

 *  New: Enforce label length limits in URLs. `HttpUrl` now rejects URLs whose domains aren't valid.
    This includes overly-long domain names (longer than 253 characters), overly-long labels (more
    than 63 characters between dots), and empty labels.

success.upload_design_file = {0} को अपडेट किया गया।
success.update_design_jsp_file = {0} को अपडेट किया गया।
success.create_crawling_config_at_wizard = क्रॉलिंग कॉन्फ़िगरेशन {0} बनाया गया।
success.failure_url_delete_all = विफल URLs हटाए गए।
success.delete_file = {0} फ़ाइल हटाई गई।
success.job_started = जॉब शुरू किया गया: {0}.
success.job_stopped = जॉब रोका गया: {0}.
success.upload_synonym_file = समानार्थी शब्द फ़ाइल अपलोड की गई।

success.upload_design_file = {0} aktualisiert.
success.update_design_jsp_file = {0} aktualisiert.
success.create_crawling_config_at_wizard = Crawling-Konfiguration {0} erstellt.
success.failure_url_delete_all = Fehler-URLs gelöscht.
success.delete_file = Datei {0} gelöscht.
success.job_started = Job {0} gestartet.
success.job_stopped = Job {0} gestoppt.
success.upload_synonym_file = Synonymdatei hochgeladen.

  <<<modelVersion>>>, <<<artifactId>>>, <<<packaging>>>, <<<profiles>>> (injected in phase 1) and <<<prerequisites>>>.

  Notice that the 5 URLs from the model (<<<project.url>>>, <<<project.scm.connection>>>, <<<project.scm.developerConnection>>>,
  <<<project.scm.url>>> and <<<project.distributionManagement.site.url>>>) have a special inheritance handling:

La mayoría de estas configuraciones son variables (pueden cambiar), como las URLs de bases de datos. Y muchas podrían ser sensibles, como los secretos.

Por esta razón, es común proporcionarlas en variables de entorno que son leídas por la aplicación.

/// tip | Consejo