接著，再次等待 🕙 回應。

這種「等待」 🕙 通常以微秒來衡量，但累加起來，最終還是花費了很多等待時間。

這就是為什麼對於 Web API 來說，使用非同步程式碼 ⏸🔀⏯ 是非常有意義的。

這種類型的非同步性正是 NodeJS 成功的原因（儘管 NodeJS 不是平行的），這也是 Go 語言作為程式語言的一個強大優勢。

這與 **FastAPI** 所能提供的性能水平相同。

///

Eine <a href="https://de.wikipedia.org/wiki/Umgebungsvariable" class="external-link" target="_blank">Umgebungsvariable</a> (auch bekannt als „env var“) ist eine Variable, die sich außerhalb des Python-Codes im Betriebssystem befindet und von Ihrem Python-Code (oder auch von anderen Programmen) gelesen werden kann.

Sie können Umgebungsvariablen in der Shell erstellen und verwenden, ohne Python zu benötigen:

import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

/**
 * Constants used in the fess-crawler.
 * This class provides a collection of constant values for HTTP methods, status codes,
 * transformer names, boolean values, character encodings, date/time formats, and XML features.
 * It is designed to avoid the instantiation.
 */
public final class Constants {
    /**
     * The GET method.
     */

Isso é bastante similar ao caso do HTTP status code 200 (do 200 ao 299). Esses "200" status codes significam que, de algum modo, houve sucesso na requisição.

Os status codes na faixa dos 400 significam que houve um erro por parte do cliente.

Você se lembra de todos aqueles erros (e piadas) a respeito do "**404 Not Found**"?

## Use o `HTTPException`

    @Size(max = 1000)
    public String sort;

    /**
     * The number of search results to return per page.
     */
    @ValidateTypeFailure
    public Integer num;

    /**
     * Array of language codes to filter search results.
     */
    public String[] lang;

    /**
     * Array of additional query strings to exclude from search.
     */
    public String[] ex_q;

    /**

        env:
          TOKEN: ${{ secrets.FASTAPI_MKDOCS_MATERIAL_INSIDERS }}
      - name: Verify Docs
        run: python ./scripts/docs.py verify-docs
      - name: Export Language Codes
        id: show-langs
        run: |
          echo "langs=$(python ./scripts/docs.py langs-json)" >> $GITHUB_OUTPUT

  build-docs:
    needs:
      - changes
      - langs

      // Server sent a 100-continue even though we did not request one. Try again to read the
      // actual response status.
      code == 100 -> true

      // Handle Processing (102) & Early Hints (103) and any new codes without failing
      // 100 and 101 are the exceptions with different meanings
      // But Early Hints not currently exposed
      code in (102 until 200) -> true

      else -> false
    }

 *   <li>comparing each pair of objects within the same equality group returns true
 *   <li>comparing each pair of objects from different equality groups returns false
 *   <li>the hash codes of any two equal objects are equal
 * </ul>
 *
 * <p>When a test fails, the error message labels the objects involved in the failed comparison as
 * follows:
 *
 * <ul>

* Python <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">**FastAPI**</a>-Backend:
    * **Schnell**: Sehr hohe Leistung, auf Augenhöhe mit **NodeJS** und **Go** (dank Starlette und Pydantic).

        int[] codes = (int[]) propMap.get(CRAWLER_FAILURE_URL_STATUS_CODES);
        if (codes == null) {
            codes = split(getCrawlerFailureUrlStatusCodes(), ",")
                    .get(stream -> stream.filter(StringUtil::isNotBlank).mapToInt(Integer::parseInt).toArray());
            propMap.put(CRAWLER_FAILURE_URL_STATUS_CODES, codes);
        }
        for (final int v : codes) {