```Python hl_lines="13  15  22  25"
{!../../docs_src/background_tasks/tutorial002.py!}
```

Neste exemplo, as mensagens serão gravadas no arquivo `log.txt` _após_ o envio da resposta.

Se houver uma consulta na solicitação, ela será gravada no log em uma tarefa em segundo plano.

E então outra tarefa em segundo plano gerada na _função de operação de caminho_ escreverá uma mensagem usando o parâmetro de caminho `email`.

* <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> az adat részekhez.

## Telepítés

<div class="termy">

```console
$ pip install fastapi

---> 100%
```

</div>

<div class="termy">

```console
$ pip install fastapi

---> 100%
```

</div>

Você também precisará de um servidor ASGI para produção, tal como <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a> ou <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a>.

<div class="termy">

```console
$ pip install "uvicorn[standard]"

<div class="termy">

```console
$ pip install fastapi

---> 100%
```

</div>

আপনার একটি ASGI সার্ভারেরও প্রয়োজন হবে, প্রোডাকশনের জন্য <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a> অথবা <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a>.

<div class="termy">

```console
$ pip install "uvicorn[standard]"

<div class="termy">

```console
$ pip install fastapi

---> 100%
```

</div>

También vas a necesitar un servidor ASGI para producción cómo <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a> o <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a>.

<div class="termy">

```console
$ pip install "uvicorn[standard]"

	if logIgnoreError(err) {
		return
	}
	logOnce.logOnceIf(ctx, subsystem, err, id, errKind...)
}

// LogOnceConsoleIf - similar to LogOnceIf but exclusively only logs to console target.
func LogOnceConsoleIf(ctx context.Context, subsystem string, err error, id string, errKind ...interface{}) {
	if logIgnoreError(err) {
		return
	}
	logOnce.logOnceConsoleIf(ctx, subsystem, err, id, errKind...)

include (print $.Template.BasePath "/_helper_policy.tpl") . | indent 4 }} {{ end }} custom-command: |- {{ include (print $.Template.BasePath "/_helper_custom_command.txt") . | indent 4 }} minio/templates/console-ingress.yaml {{- if .Values.consoleIngress.enabled -}} {{- $fullName := printf "%s-console" (include "minio.fullname" .) -}} {{- $servicePort := .Values.consoleService.port -}} {{- $ingressPath := .Values.consoleIngress.path -}} apiVersion: {{ template "minio.consoleIngress.apiVersion" . }}...

include (print $.Template.BasePath "/_helper_policy.tpl") . | indent 4 }} {{ end }} custom-command: |- {{ include (print $.Template.BasePath "/_helper_custom_command.txt") . | indent 4 }} minio/templates/console-ingress.yaml {{- if .Values.consoleIngress.enabled -}} {{- $fullName := printf "%s-console" (include "minio.fullname" .) -}} {{- $servicePort := .Values.consoleService.port -}} {{- $ingressPath := .Values.consoleIngress.path -}} apiVersion: {{ template "minio.consoleIngress.apiVersion" . }}...

include (print $.Template.BasePath "/_helper_policy.tpl") . | indent 4 }} {{ end }} custom-command: |- {{ include (print $.Template.BasePath "/_helper_custom_command.txt") . | indent 4 }} minio/templates/console-ingress.yaml {{- if .Values.consoleIngress.enabled -}} {{- $fullName := printf "%s-console" (include "minio.fullname" .) -}} {{- $servicePort := .Values.consoleService.port -}} {{- $ingressPath := .Values.consoleIngress.path -}} apiVersion: {{ template "minio.consoleIngress.apiVersion" . }}...

include (print $.Template.BasePath "/_helper_policy.tpl") . | indent 4 }} {{ end }} custom-command: |- {{ include (print $.Template.BasePath "/_helper_custom_command.txt") . | indent 4 }} minio/templates/console-ingress.yaml {{- if .Values.consoleIngress.enabled -}} {{- $fullName := printf "%s-console" (include "minio.fullname" .) -}} {{- $servicePort := .Values.consoleService.port -}} {{- $ingressPath := .Values.consoleIngress.path -}} apiVersion: {{ template "minio.consoleIngress.apiVersion" . }}...