## Prérequis

FastAPI repose sur les épaules de géants :

* <a href="https://www.starlette.io/" class="external-link" target="_blank">Starlette</a> pour les parties web.
* <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> pour les parties données.

## Installation

<div class="termy">

```console
$ pip install fastapi

---> 100%
```

</div>

* Caddy (that can also handle certificate renewals)
* Nginx
* HAProxy

## Let's Encrypt { #lets-encrypt }

Before Let's Encrypt, these **HTTPS certificates** were sold by trusted third parties.

The process to acquire one of these certificates used to be cumbersome, require quite some paperwork and the certificates were quite expensive.

## Détails techniques

Les versions modernes de Python supportent le **code asynchrone** grâce aux **"coroutines"** avec les syntaxes **`async` et `await`**.

Analysons les différentes parties de cette phrase dans les sections suivantes :

* **Code asynchrone**
* **`async` et `await`**
* **Coroutines**

## Code asynchrone

		for _, file := range v {
			part := getPartNum(file)
			partIdx, ok := partNums[part]
			if !ok {
				partIdx = len(names)
				partNums[part] = partIdx
				names = append(names, nil)
				files = append(files, make(map[string][]string))
			}
			names[partIdx] = append(names[partIdx], k)
			files[partIdx][k] = append(files[partIdx][k], file)
		}
	}
	if len(files) == 0 {
		return nil
	}

    - 💾 [PostgreSQL](https://www.postgresql.org) como banco de dados SQL.
- 🚀 [React](https://react.dev) para o frontend.
    - 💃 Usando TypeScript, hooks, [Vite](https://vitejs.dev), e outras partes de uma _stack_ frontend moderna.
    - 🎨 [Chakra UI](https://chakra-ui.com) para os componentes de frontend.
    - 🤖 Um cliente frontend automaticamente gerado.

  val carrier: Carrier

  /** Returns true if the response body and (possibly empty) trailers have been received. */
  val isResponseComplete: Boolean

  /** The socket that carries this exchange. */
  val socket: Socket

  /** Returns an output stream where the request body can be streamed. */
  @Throws(IOException::class)
  fun createRequestBody(
    request: Request,
    contentLength: Long,

        d.readBytesWireFormat(buf, 0);

        // Flags should not be set for partial read
        assertFalse(d.getParametersDone(), "parametersDone should be false for partial read");
        assertFalse(d.getDataDone(), "dataDone should be false for partial read");
        assertTrue(d.getHasMore(), "hasMore should remain true for partial read");
    }

    /**
     * Test scenario with no data to read
     */

		return 0, nil
	}
	o.debugln("searching for ", search)
	var tmp metacacheBlock
	json := jsoniter.ConfigCompatibleWithStandardLibrary
	i := 0
	for {
		partKey := fmt.Sprintf("%s-metacache-part-%d", ReservedMetadataPrefixLower, i)
		v, ok := fi.Metadata[partKey]
		if !ok {
			o.debugln("no match in metadata, waiting")
			return -1, io.ErrUnexpectedEOF
		}
		err := json.Unmarshal([]byte(v), &tmp)
		if !ok {

			parities[i] = -1             // invalid fi are assigned parity -1
		}
		res.metaArr = metaArr
		res.parities = parities
		res.errs = make([]error, N)
		if agree >= N-parity {
			res.parity = parity
		} else {
			res.parity = -1
		}

		return res
	}
	tests := []struct {
		metaArr  []FileInfo
		errs     []error
		parities []int
		parity   int
	}{

	for i, part := range fi.Parts {
		if partNumber == part.Number {
			fi.Parts[i] = partInfo
			return
		}
	}

	// Proceed to include new part info.
	fi.Parts = append(fi.Parts, partInfo)

	// Parts in FileInfo should be in sorted order by part number.
	sort.Slice(fi.Parts, func(i, j int) bool { return fi.Parts[i].Number < fi.Parts[j].Number })
}