### Múltiplas Aplicações

Podem existir **múltiplas aplicações** em execução no mesmo servidor (ou servidores), por exemplo: outras APIs ou um banco de dados.

**Código fonte**: <a href="https://github.com/fastapi/fastapi" target="_blank">https://github.com/fastapi/fastapi</a>

---

FastAPI é um moderno e rápido (alta performance) _framework web_ para construção de APIs com Python, baseado nos _type hints_ padrões do Python.

Os recursos chave são:

    } catch (e: NoSuchMethodException) {
      super.buildTrustRootIndex(trustManager)
    }

  override fun getHandshakeServerNames(sslSocket: SSLSocket): List<String> {
    // The superclass implementation requires APIs not available until API 24+.
    if (Build.VERSION.SDK_INT < 24) return listOf()
    return super.getHandshakeServerNames(sslSocket)
  }

  override fun log(
    message: String,
    level: Int,

    try {
      helper = new SafeAtomicHelper();
    } catch (Throwable reflectionFailure) { // sneaky checked exception
      // Some Android 5.0.x Samsung devices have bugs in JDK reflection APIs that cause
      // getDeclaredField to throw a NoSuchFieldException when the field is definitely there.
      // For these users fallback to a suboptimal implementation, based on synchronized. This will

 *
 * <ul>
 *   <li>Memory footprint has a fixed overhead (about 24 bytes per instance).
 *   <li><i>Some</i> construction use cases force the data to be copied (though several construction
 *       APIs are offered that don't).
 *   <li>Can't be passed directly to methods that expect {@code long[]} (though the most common
 *       utilities do have replacements here).
 *   <li>Dependency on {@code com.google.common} / Guava.

   * (In other words, this method must allocate a new array). The caller is thus free to modify the
   * returned array.
   *
   * <p>This method acts as bridge between array-based and collection-based APIs.
   *
   * @return an array containing all of the elements in this queue
   */
  @CanIgnoreReturnValue
  @Override
  public Object[] toArray() {
    E[] items = this.items;

Es handelte sich also um ein komplett zusätzliches System.

Heutzutage ist es nicht sehr populär und wird kaum verwendet.

## OpenAPI

OpenAPI (früher bekannt als Swagger) ist die offene Spezifikation zum Erstellen von APIs (jetzt Teil der Linux Foundation).

**FastAPI** basiert auf **OpenAPI**.

Das ist es, was erlaubt, mehrere automatische interaktive Dokumentations-Oberflächen, Codegenerierung, usw. zu haben.

//	    logger.LogIf(ctx, err)
//	}
type objSweeper struct {
	Object              string
	Bucket              string
	VersionID           string // version ID set by application, applies only to DeleteObject and DeleteObjects APIs
	Versioned           bool
	Suspended           bool
	TransitionStatus    string
	TransitionTier      string
	TransitionVersionID string
	RemoteObject        string
}

So, it was a complete additional system.

It is not very popular or used nowadays.

## OpenAPI { #openapi }

OpenAPI (previously known as Swagger) is the open specification for building APIs (now part of the Linux Foundation).

**FastAPI** is based on **OpenAPI**.

That's what makes it possible to have multiple automatic interactive documentation interfaces, code generation, etc.

- name: budgetml
  html_url: https://github.com/ebhy/budgetml
  stars: 1345
  owner_login: ebhy
  owner_html_url: https://github.com/ebhy
- name: fastapi-amis-admin
  html_url: https://github.com/amisadmin/fastapi-amis-admin
  stars: 1327
  owner_login: amisadmin
  owner_html_url: https://github.com/amisadmin
- name: fastapi-tutorial
  html_url: https://github.com/liaogx/fastapi-tutorial