* expression
* statement

* frontend
* backend

* GitHub discussion
* GitHub issue

* performance
* performance optimization

* return type
* return value

* security
* security scheme

* task
* background task
* task function

* template
* template engine

* type annotation
* type hint

* server worker
* Uvicorn worker
* Gunicorn Worker

This is the basic idea. But you will probably want to take care of some additional things, like:

* Security - HTTPS
* Running on startup
* Restarts
* Replication (the number of processes running)
* Memory
* Previous steps before starting

    public void test_constructorWithThrowableCause_AssertionError() {
        // Test with AssertionError as cause
        String message = "SSO login assertion violation";
        AssertionError error = new AssertionError("Security assertion failed");
        SsoLoginException exception = new SsoLoginException(message, error);

        assertEquals(message, exception.getMessage());
        assertTrue(exception.getCause() instanceof AssertionError);

							jcifs*;version="${osgi.pkg.version}",
						</Export-Package>
						<Private-Package />
						<Import-Package>
							jakarta.servlet*;resolution:=optional,
							com.sun.security.jgss;resolution:=optional,
							org.bouncycastle*;version="1.63",
							!jcifs.internal*,
							*
						</Import-Package>
					</instructions>
				</configuration>
			</plugin>
			<plugin>

/// tip | Astuce

Tout cela peut ne pas sembler très utile avec ces exemples simples.

Mais vous verrez à quel point c'est utile dans les chapitres sur la **sécurité**.

Et vous verrez aussi la quantité de code que cela vous fera économiser.

    - [Server Binaries](#server-binaries)
    - [Node Binaries](#node-binaries)
    - [Container Images](#container-images)
  - [Changelog since v1.27.15](#changelog-since-v12715)
  - [Important Security Information](#important-security-information)
    - [CVE-2024-5321: Incorrect permissions on Windows containers logs](#cve-2024-5321-incorrect-permissions-on-windows-containers-logs)
  - [Changes by Kind](#changes-by-kind)
    - [Feature](#feature)

</div>

## Create the App with a Single Model { #create-the-app-with-a-single-model }

We'll create the simplest first version of the app with a single **SQLModel** model first.

Later we'll improve it increasing security and versatility with **multiple models** below. 🤓

### Create Models { #create-models }

Import `SQLModel` and create a database model:

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[1:11] hl[7:11] *}

Et tous utiliseront la même connexion WebSocket.

## Utiliser `Depends` et autres { #using-depends-and-others }

Dans les endpoints WebSocket, vous pouvez importer depuis `fastapi` et utiliser :

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

Ils fonctionnent de la même manière que pour les autres endpoints/*chemins d'accès* FastAPI :

Kullanıcının düz metin (plaintext) `password`'ünü asla saklamayın. Her zaman sonradan doğrulayabileceğiniz "güvenli bir hash" saklayın.

Eğer bilmiyorsanız, "password hash" nedir konusunu [güvenlik bölümlerinde](security/simple-oauth2.md#password-hashing) öğreneceksiniz.

///

## Birden Çok Model { #multiple-models }

          if (Thread.currentThread() != currentThread) {
            return
          }

          // https://timothybasanov.com/2016/05/26/java-pre-master-secret.html
          // https://security.stackexchange.com/questions/35639/decrypting-tls-in-wireshark-when-using-dhe-rsa-ciphersuites
          // https://stackoverflow.com/questions/36240279/how-do-i-extract-the-pre-master-secret-using-an-openssl-based-client