Nevertheless, it's possible to do it, and here you'll see exactly what code you have to add to be able to use Peewee with FastAPI.

!!! note "Technical Details"

But the details between *concurrency* and *parallelism* are quite different.

To see the difference, imagine the following story about burgers:

### Concurrent Burgers

You go with your crush to get fast food, you stand in line while the cashier takes the orders from the people in front of you. 😍

<img src="/img/async/concurrent-burgers/concurrent-burgers-01.png" class="illustration">

And there are several ways to get help too.

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And if the server is restarted (for example after updates, or migrations from the cloud provider) you probably **won't notice it**. And because of that, you won't even know that you have to restart the process manually. So, your API will just stay dead. 😱

### Run Automatically on Startup

### Swagger-Benutzeroberfläche und OpenAPI-spezifische `examples`.

Da die Swagger-Benutzeroberfläche derzeit nicht mehrere JSON Schema Beispiele unterstützt (Stand: 26.08.2023), hatten Benutzer keine Möglichkeit, mehrere Beispiele in der Dokumentation anzuzeigen.

                }
            }

            // In the code below, we always maintain the contract that `classId` and `qualifiedAccess` should stay "in-sync", i.e. they
            // refer to the same class and classId should be null if `qualifiedAccess` references to a package.
            var classId: ClassId? = referencedClassId

            // Handle nested classes.

 * your OkHttp library can break connectivity to certain web servers! But it’s a necessary annoyance
 * because the TLS ecosystem is dynamic and staying up to date is necessary to stay secure. See
 * [OkHttp's TLS Configuration History][tls_history] to track these changes.
 *
 * [tls_history]: https://square.github.io/okhttp/tls_configuration_history/
 */
class ConnectionSpec internal constructor(