# Security

There are many ways to handle security, authentication and authorization.

And it normally is a complex and "difficult" topic.

In many frameworks and systems just handling security and authentication takes a big amount of effort and code (in many cases it can be 50% or more of all the code written).

#### OkHttpClient final methods

`OkHttpClient` has 26 accessors like `interceptors()` and `writeTimeoutMillis()` that were non-final
in OkHttp 3.x and are final in 4.x. These were made non-final for use with mocking frameworks like
[Mockito][mockito]. We believe subtyping `OkHttpClient` is the wrong way to test with OkHttp. If
you must, mock `Call.Factory` which is the interface that `OkHttpClient` implements.

#### Internal API changes

* Datenvalidierung
* API-Annotationen und automatische Dokumentation

Und Sie müssen sie nur einmal deklarieren.

## ASGI Servers

Let's go a little deeper into the details.

FastAPI uses a standard for building Python web frameworks and servers called <abbr title="Asynchronous Server Gateway Interface">ASGI</abbr>. FastAPI is an ASGI web framework.

---
FastAPI es un web framework moderno y rápido (de alto rendimiento) para construir APIs con Python basado en las anotaciones de tipos estándar de Python.

Sus características principales son:

* **Rapidez**: Alto rendimiento, a la par con **NodeJS** y **Go** (gracias a Starlette y Pydantic). [Uno de los frameworks de Python más rápidos](#rendimiento).

- **[Installing Gradle](https://docs.gradle.org/current/userguide/installation.html)**
- **Build Projects for Popular Languages and Frameworks**:
  - [Java Applications](https://docs.gradle.org/current/samples/sample_building_java_applications.html)
  - [Java Modules](https://docs.gradle.org/current/samples/sample_java_modules_multi_project.html)

* Zeer indrukwekkende prestaties. Het is <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">een van de snelste Python frameworks, vergelijkbaar met **NodeJS** en **Go**</a>.
* **WebSocket** ondersteuning.
* Taken in de achtergrond tijdens het proces.
* Opstart- en afsluit events.
* Test client gebouwd op HTTPX.

     * constructor -- an example of the kind of lying that our hypothetical bytecode rewriter would
     * already have to deal with, thanks to DI frameworks that perform field and method injection,
     * frameworks like Android that define post-construct hooks like Activity.onCreate, etc.
     */

    @CheckForNull private ValueSetLink<K, V> predecessorInValueSet;

---

FastAPI is een modern, snel (zeer goede prestaties), web framework voor het bouwen van API's in Python, gebruikmakend van standaard Python type-hints.

De belangrijkste kenmerken zijn:

* **Snel**: Zeer goede prestaties, vergelijkbaar met **NodeJS** en **Go** (dankzij Starlette en Pydantic). [Een van de snelste beschikbare Python frameworks](#prestaties).

#include "tensorflow/core/framework/tensor.h"
#include "tensorflow/core/framework/tensor_reference.h"
#include "tensorflow/core/platform/logging.h"

namespace tensorflow {

namespace {

// Managing context for the DLManagedTensor, will manage the lifetime of
// DLManagedTensor. When calling DLManagedTensor::deleter, it will notify the
// original framework of destruction, and this context will be deleted also.