## Install custom exception handlers { #install-custom-exception-handlers }

You can add custom exception handlers with <a href="https://www.starlette.io/exceptions/" class="external-link" target="_blank">the same exception utilities from Starlette</a>.

Let's say you have a custom exception `UnicornException` that you (or a library you use) might `raise`.

    FESS_MIN_MEM=256m
fi
if [ "x$FESS_MAX_MEM" = "x" ]; then
    FESS_MAX_MEM=2g
fi
if [ "x$FESS_HEAP_SIZE" != "x" ]; then
    FESS_MIN_MEM=$FESS_HEAP_SIZE
    FESS_MAX_MEM=$FESS_HEAP_SIZE
fi

# External opensearch cluster
#SEARCH_ENGINE_HTTP_URL=http://localhost:9200
#FESS_DICTIONARY_PATH=/var/lib/opensearch/config/

# SSL truststore for certificate validation over https

 * this structure is never mutated, it provides a thread-safe view of the backing map.
 *
 * <p>The {@link MapIteratorCache} assumes ownership of the backing map, and cannot guarantee
 * correctness in the face of external mutations to the backing map. As such, it is <b>strongly</b>
 * recommended that the caller does not persist a reference to the backing map (unless the backing
 * map is immutable).
 *

As comparações independentes da TechEmpower mostram as aplicações **FastAPI** rodando com Uvicorn como <a href="https://www.techempower.com/benchmarks/#section=test&runid=7464e520-0dc2-473d-bd34-dbdfd7e85911&hw=ph&test=query&l=zijzen-7" class="external-link" target="_blank">um dos _frameworks_ Python mais rápidos disponíveis</a>, somente atrás dos próprios Starlette e Uvicorn (utilizados internamente pelo FastAPI). (*)

Você pode escrever <a href="https://en.wikipedia.org/wiki/Markdown" class="external-link" target="_blank">Markdown</a> na docstring, ele será interpretado e exibido corretamente (levando em conta a indentação da docstring).

{* ../../docs_src/path_operation_configuration/tutorial004.py hl[19:27] *}

C'est pourquoi les versions actuelles sont toujours `0.x.x`, cela reflète que chaque version peut potentiellement
recevoir des changements non rétrocompatibles. Cela suit les conventions de <a href="https://semver.org/" class="external-link"
target="_blank">versionnage sémantique</a>.

<img src="/img/tutorial/security/image12.png">

## ✅ 🆔

📥 🌅 🏁 🖼.

⚙️ 🔗 ✅ 🚥 🆔 &amp; 🔐 ☑.

👉, ⚙️ 🐍 🐩 🕹 <a href="https://docs.python.org/3/library/secrets.html" class="external-link" target="_blank">`secrets`</a> ✅ 🆔 &amp; 🔐.

`secrets.compare_digest()` 💪 ✊ `bytes` ⚖️ `str` 👈 🕴 🔌 🔠 🦹 (🕐 🇪🇸), 👉 ⛓ ⚫️ 🚫🔜 👷 ⏮️ 🦹 💖 `á`, `Sebastián`.

이는 실제 **URL 경로**는 **사용자**가 다른 방법(예: 웹 대시보드)을 통해 지정하도록 기대되기 때문입니다.

### 문서 확인하기

이제 앱을 시작하고 <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>로 이동해 봅시다.

문서에서 기존 *경로 작업*뿐만 아니라 **웹훅**도 표시된 것을 확인할 수 있습니다:

<a href="https://ko.wikipedia.org/wiki/%EB%A7%88%ED%81%AC%EB%8B%A4%EC%9A%B4" class="external-link" target="_blank">마크다운</a> 문법으로 독스트링을 작성할 수 있습니다, 작성된 마크다운 형식의 독스트링은 (마크다운의 들여쓰기를 고려하여) 올바르게 화면에 출력됩니다.

{* ../../docs_src/path_operation_configuration/tutorial004.py hl[19:27] *}

이는 대화형 문서에서 사용됩니다:

 * returns a <b>(live) unmodifiable view</b>; see <a
 * href="https://github.com/google/guava/wiki/GraphsExplained#accessor-behavior">the external
 * documentation</a> for details.
 *
 * <p>Examples of use:
 *
 * {@snippet :
 * // Building a mutable value graph
 * MutableValueGraph<String, Double> graph =