You can consider this a brief OpenAPI and JSON Schema **history lesson**. 🤓

///

/// warning

These are very technical details about the standards **JSON Schema** and **OpenAPI**.

If the ideas above already work for you, that might be enough, and you probably don't need these details, feel free to skip them.

///

Before OpenAPI 3.1.0, OpenAPI used an older and modified version of **JSON Schema**.

{* ../../docs_src/handling_errors/tutorial006_py310.py hl[2:5,15,21] *}

Bu, en iyi performansı elde etmenin ideal yoludur.

///

### `RedirectResponse` { #redirectresponse }

HTTP redirect döndürür. Varsayılan olarak 307 status code (Temporary Redirect) kullanır.

`RedirectResponse`’u doğrudan döndürebilirsiniz:

* `fixedquery`: has the exact value `fixedquery`.
* `$`: ends there, doesn't have any more characters after `fixedquery`.

If you feel lost with all these **"regular expression"** ideas, don't worry. They are a hard topic for many people. You can still do a lot of stuff without needing regular expressions yet.

Now you know that whenever you need them you can use them in **FastAPI**.

This can be used as a quick shortcut if you have only one Pydantic model and want to remove some data from the output.

/// tip

But it is still recommended to use the ideas above, using multiple classes, instead of these parameters.

Obtemos a mesma resposta:

```JSON
{
    "message": "Hello World",
    "root_path": "/api/v1"
}
```

mas desta vez no URL com o prefixo de path fornecido pelo proxy: `/api/v1`.

Claro, a ideia aqui é que todos acessariam a aplicação através do proxy, então a versão com o prefixo de path `/api/v1` é a "correta".

<abbr title="Content Delivery Network: service, that provides static files.">CDN</abbr>
<abbr title="Integrated Development Environment: similar to a code editor">IDE</abbr>
```

Result (German):

```
<abbr title="Input/Output - Eingabe/Ausgabe: Lesen oder Schreiben auf der Festplatte, Netzwerkkommunikation.">I/O</abbr>

    // we try hard to make them robust in practice.  We could additionally try to add in a system
    // load timeout multiplier.  Or we could try to use a CPU time bound instead of wall clock time
    // bound.  But these ideas are harder to implement.  We do not try to detect or handle a
    // user-specified -XX:+DisableExplicitGC.
    //
    // TODO(user): Consider using
    // java/lang/management/OperatingSystemMXBean.html#getSystemLoadAverage()

          }
        };
    try {
      hmacMd5(badKey);
      fail();
    } catch (IllegalArgumentException expected) {
    } catch (NullPointerException toleratedOnAndroid) {
      // TODO(cpovirk): In an ideal world, we'd check here that we're running on Android.
    }
  }

  public void testEmptyInputs() throws Exception {
    String knownOutput = "8cbf764cbe2e4623d99a41354adfd390";

The most common way to do it is to have a file `requirements.txt` with the package names and their versions, one per line.

You would of course use the same ideas you read in [About FastAPI versions](versions.md) to set the ranges of versions.

For example, your `requirements.txt` could look like:

```
fastapi[standard]>=0.113.0,<0.114.0
pydantic>=2.7.0,<3.0.0
```