Aynı anda paralellik ve asenkronluğa sahip olabildiğiniz için, test edilen NodeJS çerçevelerinin çoğundan daha yüksek performans elde edersiniz ve C'ye daha yakın derlenmiş bir dil olan Go ile eşit bir performans elde edersiniz <a href="https://www.techempower.com/benchmarks/#section=data-r17&hw=ph&test=query&l=zijmkf-1" class="external-link" target="_blank">(bütün teşekkürler Starlette'e )</a>.

### Eşzamanlılık paralellikten daha mı iyi?

### Check the docs { #check-the-docs }

Now you can start your app and go to <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

You will see your docs have the normal *path operations* and now also some **webhooks**:

Now, let's see how you could use that to return a custom response.

Let's say that you want to return an <a href="https://en.wikipedia.org/wiki/XML" class="external-link" target="_blank">XML</a> response.

You could put your XML content in a string, put that in a `Response`, and return it:

import java.util.NoSuchElementException;
import org.jspecify.annotations.Nullable;

/**
 * An iterator that supports a one-element lookahead while iterating.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/CollectionHelpersExplained#peekingiterator">{@code
 * PeekingIterator}</a>.
 *
 * @author Mick Killianey
 * @since 2.0
 */
@DoNotMock("Use Iterators.peekingIterator")

                    </div>
                    <div class="col-sm-6">
                        <ol class="breadcrumb float-sm-right">
                            <li class="breadcrumb-item active"><la:link href="/admin/searchlog">
                                <la:message key="labels.searchlog_title"/>
                            </la:link></li>
                        </ol>
                    </div>
                </div>

 * interacting with this class directly.
 *
 * <p><b>Warning:</b> this interface can only be used to measure elapsed time, not wall time.
 *
 * @author Kevin Bourrillion
 * @since 10.0 (<a href="https://github.com/google/guava/wiki/Compatibility">mostly
 *     source-compatible</a> since 9.0)
 */
@GwtCompatible
public abstract class Ticker {
  /** Constructor for use by subclasses. */
  protected Ticker() {}

## 🗄 👩‍💻 🚂

📤 📚 🧰 🏗 👩‍💻 ⚪️➡️ **🗄**.

⚠ 🧰 <a href="https://openapi-generator.tech/" class="external-link" target="_blank">🗄 🚂</a>.

🚥 👆 🏗 **🕸**, 📶 😌 🎛 <a href="https://github.com/hey-api/openapi-ts" class="external-link" target="_blank">🗄-📕-🇦🇪</a>.

## 🏗 📕 🕸 👩‍💻

➡️ ▶️ ⏮️ 🙅 FastAPI 🈸:

👆 🎲 🏆 🚫 💪 ⚙️ ⚫️ 🔗 👆 📟.

✋️ 💼 👆 💪 ⚫️ 🏧 😐, 👆 💪 🚮 🛃 🎚:

{* ../../docs_src/handling_errors/tutorial002.py hl[14] *}

## ❎ 🛃 ⚠ 🐕‍🦺

👆 💪 🚮 🛃 ⚠ 🐕‍🦺 ⏮️ <a href="https://www.starlette.io/exceptions/" class="external-link" target="_blank">🎏 ⚠ 🚙 ⚪️➡️ 💃</a>.

➡️ 💬 👆 ✔️ 🛃 ⚠ `UnicornException` 👈 👆 (⚖️ 🗃 👆 ⚙️) 💪 `raise`.

&amp; 👆 💚 🍵 👉 ⚠ 🌐 ⏮️ FastAPI.

{* ../../docs_src/handling_errors/tutorial002.py hl[14] *}

## Встановлення власних обробників помилок

Ви можете додати власні обробники помилок за допомогою <a href="https://www.starlette.io/exceptions/" class="external-link" target="_blank">тих самих утиліт обробки помилок зі Starlette</a>.

                            </h3>
                            <div class="card-tools">
                                <div class="btn-group">
                                    <la:link href="installplugin"
                                             styleClass="btn btn-success btn-xs ${f:h(editableClass)}">
                                        <em class="fa fa-plus">