## Desarrollo { #development }

Para cuando comencé a crear el propio **FastAPI**, la mayoría de las piezas ya estaban en su lugar, el diseño estaba definido, los requisitos y herramientas estaban listos, y el conocimiento sobre los estándares y especificaciones estaba claro y fresco.

## Futuro { #future }

A este punto, ya está claro que **FastAPI** con sus ideas está siendo útil para muchas personas.

key can be defined.

If a certificate is presented for authentication and has its signing CA key is in this file, then it may be
used for authentication for any user listed in the certificate's principals list. 

Note that certificates that lack a list of principals will not be permitted for authentication using trusted-user-ca-key.

## Headers duplicados { #duplicate-headers }

Es posible recibir headers duplicados. Eso significa, el mismo header con múltiples valores.

Puedes definir esos casos usando una lista en la declaración del tipo.

Recibirás todos los valores del header duplicado como una `list` de Python.

Por ejemplo, para declarar un header de `X-Token` que puede aparecer más de una vez, puedes escribir:

     * a member of.
     *
     * This method is designed to assist with computing access control for a
     * given user when the target object's ACL has local groups. Local groups
     * are not listed in a user's group membership (e.g. as represented by the
     * tokenGroups constructed attribute retrieved via LDAP).
     *
     * Domain groups nested inside a local group are currently not expanded. In

     * "java.protocol.handler.pkgs", the VM uses one or more default
     * packages, which are vendor specific. Sun's is included below
     * for convenience; others could be as well. If a particular vendor's
     * package isn't listed, it can be specified in
     * "java.protocol.handler.pkgs".
     */
    private static final String[] JVM_VENDOR_DEFAULT_PKGS = { "sun.net.www.protocol" };

    private static URLStreamHandlerFactory factory;

// of leak checking. It excludes testing or runtime ones.
func pickRelevantGoroutines() (gs []string) {
	// get runtime stack buffer.
	buf := debug.Stack()
	// runtime stack of go routines will be listed with 2 blank spaces between each of them, so split on "\n\n" .
	for g := range strings.SplitSeq(string(buf), "\n\n") {
		// Again split on a new line, the first line of the second half contains the info about the go routine.

////

When you type a **command** in the terminal, the operating system **looks for** the program in **each of those directories** listed in the `PATH` environment variable.

For example, when you type `python` in the terminal, the operating system looks for a program called `python` in the **first directory** in that list.

If it finds it, then it will **use it**. Otherwise it keeps looking in the **other directories**.

Lorsque vous tapez une **commande** dans le terminal, le système d'exploitation **cherche** le programme dans **chacun de ces répertoires** listés dans la variable d'environnement `PATH`.

Par exemple, lorsque vous tapez `python` dans le terminal, le système d'exploitation cherche un programme nommé `python` dans le **premier répertoire** de cette liste.

S'il le trouve, alors il **l'utilise**. Sinon, il continue à chercher dans les **autres répertoires**.

    checkPublicSuffix("example.example", "example.example")
    checkPublicSuffix("b.example.example", "example.example")
    checkPublicSuffix("a.b.example.example", "example.example")
    // Listed, but non-Internet, TLD.
    // checkPublicSuffix("local", null);
    // checkPublicSuffix("example.local", null);
    // checkPublicSuffix("b.example.local", null);
    // checkPublicSuffix("a.b.example.local", null);

Here are some possible combinations and strategies:

* **Uvicorn** with `--workers`
    * One Uvicorn **process manager** would listen on the **IP** and **port**, and it would start **multiple Uvicorn worker processes**.
* **Kubernetes** and other distributed **container systems**
    * Something in the **Kubernetes** layer would listen on the **IP** and **port**. The replication would be by having **multiple containers**, each with **one Uvicorn process** running.