### Bigger Errors - Crashes { #bigger-errors-crashes }

Nevertheless, there might be cases where we write some code that **crashes the entire application** making Uvicorn and Python crash. 💥

 *
 * The task runner is also responsible for releasing held threads when the library is unloaded.
 * This is for the benefit of container environments that implement code unloading.
 *
 * Most applications should share a process-wide [TaskRunner] and use queues for per-client work.
 */
class TaskRunner(
  val backend: Backend,
  internal val logger: Logger = TaskRunner.logger,
) : Lockable {

                            "description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        },
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {
                                    "schema": {

# Keycloak Quickstart Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)

Keycloak is an open source Identity and Access Management solution aimed at modern applications and services, this document covers configuring Keycloak identity provider support with MinIO.

## Prerequisites

Configure and install keycloak server by following [Keycloak Installation Guide](https://www.keycloak.org/docs/latest/server_installation/#installing-the-software).

## Caveat

As it is very simple, it's relatively intuitive to learn, although the documentation gets somewhat technical at some points.

It is also commonly used for other applications that don't necessarily need a database, user management, or any of the many features that come pre-built in Django. Although many of these features can be added with plug-ins.

In this scenario of "fast food burgers with your crush", as there is a lot of waiting 🕙, it makes a lot more sense to have a concurrent system ⏸🔀⏯.

This is the case for most of the web applications.

Many, many users, but your server is waiting 🕙 for their not-so-good connection to send their requests.

And then waiting 🕙 again for the responses to come back.

   without changing `.kt` files.

With a few small exceptions (below), OkHttp 4.x is both binary- and Java source-compatible with
OkHttp 3.x. You can use an OkHttp 4.x .jar file with applications or libraries built for OkHttp 3.x.

OkHttp is **not** source-compatible for Kotlin callers, but upgrading should be automatic thanks to
Kotlin’s powerful deprecation features. Most developers should be able to use IntelliJ’s _Code

`TestClient`는 <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a>를 기반으로 하고 있으며, 다행히 이를 직접 사용하여 API를 테스트할 수 있습니다.

## 예시

간단한 예시를 위해 [더 큰 어플리케이션 만들기](../ko/tutorial/bigger-applications.md){.internal-link target=_blank} 와 [테스트](../ko/tutorial/testing.md){.internal-link target=_blank}:에서 다룬 파일 구조와 비슷한 형태를 확인해봅시다:

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

Також Ваш **FastAPI**-застосунок може складатися з кількох файлів або модулів тощо.

### Файл застосунку **FastAPI**

Припустимо, у Вас є структура файлів, описана в розділі [Більші застосунки](bigger-applications.md){.internal-link target=_blank}:

```
.
├── app
│   ├── __init__.py
│   └── main.py
```
У файлі `main.py` знаходиться Ваш застосунок **FastAPI** :

{* ../../docs_src/app_testing/main.py *}