The process that happens when your API app calls the *external API* is named a "callback". Because the software that the external developer wrote sends a request to your API and then your API *calls back*, sending a request to an *external API* (that was probably created by the same developer).

href="https://anyio.readthedocs.io/en/stable/" class="external-link" target="_blank">AnyIO</a>, ❔ ⚒ 👫 🔗 ⏮️ 👯‍♂️ 🐍 🐩 🗃 <a href="https://docs.python.org/3/library/asyncio-task.html" class="external-link" target="_blank">✳</a> &amp; <a href="https://trio.readthedocs.io/en/stable/" class="external-link" target="_blank">🎻</a>.

👐, Uvicorn ⏳ 🕴 🔗 ⏮️ ✳, &amp; ⚫️ 🛎 ⚙️ <a href="https://github.com/MagicStack/uvloop" class="external-link" target="_blank">`uvloop`</a>, ↕-🎭 💧-♻ `asyncio`....

        buf.append('{');

        final boolean ignoreIdleThreads = Constants.TRUE.equalsIgnoreCase(fessConfig.getCrawlerHotthreadIgnoreIdleThreads());
        final TimeValue interval = TimeValue.parseTimeValue(fessConfig.getCrawlerHotthreadInterval(), "crawler.hotthread.interval");
        final int threads = fessConfig.getCrawlerHotthreadThreadsAsInteger();
        final String timeout = fessConfig.getCrawlerHotthreadTimeout();

     */
    public static class IntervalRule {
        /** Starting hour of the interval */
        protected int fromHours;

        /** Starting minute of the interval */
        protected int fromMinutes;

        /** Ending hour of the interval */
        protected int toHours;

        /** Ending minute of the interval */
        protected int toMinutes;

* <a href="https://www.uvicorn.org/" class="external-link" target="_blank">Uvicorn</a> : un serveur ASGI haute performance.
* <a href="https://hypercorn.readthedocs.io/" class="external-link" target="_blank">Hypercorn</a> : un serveur
  ASGI compatible avec HTTP/2 et Trio entre autres fonctionnalités.
* <a href="https://github.com/django/daphne" class="external-link" target="_blank">Daphne</a> : le serveur ASGI
  conçu pour Django Channels.

 */
package org.codelibs.fess.crawler.interval;

import org.codelibs.fess.crawler.interval.impl.DefaultIntervalController;
import org.codelibs.fess.helper.IntervalControlHelper;
import org.codelibs.fess.util.ComponentUtil;

/**
 * FessIntervalController extends DefaultIntervalController to provide
 * Fess-specific interval control functionality for web crawling operations.

    /**
     * The feature for external general entities in XML.
     */
    public static final String FEATURE_EXTERNAL_GENERAL_ENTITIES = "http://xml.org/sax/features/external-general-entities";

    /**
     * Feature for external parameter entities in XML.
     */
    public static final String FEATURE_EXTERNAL_PARAMETER_ENTITIES = "http://xml.org/sax/features/external-parameter-entities";

    static {

        final FaultTolerantClient client = new FaultTolerantClient();
        client.setRetryInterval(100);
        final TestClient testClient = new TestClient();
        testClient.exceptionCount = 4;
        testClient.interval = 100;
        final TestListener testListener = new TestListener();
        client.setCrawlerClient(testClient);
        client.setRequestListener(testListener);
        final String url = "http://test.com/";

* 👆 💪 🤚 🗃 ⚪️➡️ 📂 📁.
* ⚫️ ✔️ <a href="https://docs.python.org/3/glossary.html#term-file-like-object" class="external-link" target="_blank">📁-💖</a> `async` 🔢.
* ⚫️ 🎦 ☑ 🐍 <a href="https://docs.python.org/3/library/tempfile.html#tempfile.SpooledTemporaryFile" class="external-link" target="_blank">`SpooledTemporaryFile`</a> 🎚 👈 👆 💪 🚶‍♀️ 🔗 🎏 🗃 👈 ⌛ 📁-💖 🎚.

### `UploadFile`

`UploadFile` ✔️ 📄 🔢:

`example` 🐩. ⏮️ ⏬ 🎻 🔗 🔬 🏑 <a href="https://json-schema.org/draft/2019-09/json-schema-validation.html#rfc.section.9.5" class="external-link" target="_blank">`examples`</a>, ✋️ 🗄 3️⃣.0️⃣.3️⃣ ⚓️ 🔛 🗝 ⏬ 🎻 🔗 👈 🚫 ✔️ `examples`.

, 🗄 3️⃣.0️⃣.3️⃣ 🔬 🚮 👍 <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.3.md#fixed-fields-20" class="external-link" target="_blank">`example`</a> 🔀 ⏬ **🎻 🔗** ⚫️ ⚙️, 🎏 🎯 (✋️ ⚫️ 👁 `example`, 🚫 `examples`), &amp; 👈 ⚫️❔ ⚙️ 🛠️ 🩺...