# Background Tasks { #background-tasks }

You can define background tasks to be run *after* returning a response.

This is useful for operations that need to happen after a request, but that the client doesn't really have to be waiting for the operation to complete before receiving the response.

This includes, for example:

* Email notifications sent after performing an action:

* Отправьте из них сообщения.
* Затем закройте одну из вкладок.

Это вызовет исключение `WebSocketDisconnect`, и все остальные клиенты получат следующее сообщение:

```
Client #1596980209979 left the chat
```

/// tip | Примечание

Приложение выше - это всего лишь простой минимальный пример, демонстрирующий обработку и передачу сообщений нескольким веб-сокет соединениям.

    bootstrapClient: OkHttpClient,
    includeIPv6: Boolean,
    post: Boolean = false,
  ): DnsOverHttps {
    val url = server.url("/lookup?ct")
    return DnsOverHttps
      .Builder()
      .client(bootstrapClient)
      .includeIPv6(includeIPv6)
      .resolvePrivateAddresses(true)
      .url(url)
      .post(post)
      .build()
  }

  companion object {

		m[name] = consoleoauth2.ProviderConfig{
			URL:                     cfg.URL.String(),
			DisplayName:             cfg.DisplayName,
			ClientID:                cfg.ClientID,
			ClientSecret:            cfg.ClientSecret,
			HMACSalt:                globalDeploymentID(),
			HMACPassphrase:          cfg.ClientID,
			Scopes:                  strings.Join(cfg.DiscoveryDoc.ScopesSupported, ","),
			Userinfo:                cfg.ClaimUserinfo,

    configure<MavenPublishBaseExtension> {
      publishToMavenCentral(automaticRelease = true)
      signAllPublications()
      pom {
        name.set(project.name)
        description.set("Square’s meticulous HTTP client for Java and Kotlin.")
        url.set("https://square.github.io/okhttp/")
        licenses {
          license {
            name.set("The Apache Software License, Version 2.0")

/* jcifs smb client library in Java
 * Copyright (C) 2000  "Michael B. Allen" <jcifs at samba dot org>
 *                     "Paul Walker" <jcifs at samba dot org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *

테스트해보기:

* 여러 브라우저 탭에서 앱을 엽니다.
* 각 탭에서 메시지를 작성합니다.
* 한 탭을 닫아보세요.

`WebSocketDisconnect` 예외가 발생하며, 다른 모든 클라이언트가 다음과 같은 메시지를 수신합니다:

```
Client #1596980209979 left the chat
```

/// tip | 팁

위 응용 프로그램은 여러 WebSocket 연결에 메시지를 브로드캐스트하는 방법을 보여주는 간단한 예제입니다.

그러나 모든 것을 메모리의 단일 리스트로 처리하므로, 프로세스가 실행 중인 동안만 동작하며 단일 프로세스에서만 작동합니다.

import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.ingest.IngestFactory;
import org.codelibs.fess.ingest.Ingester;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.opensearch.log.exbhv.ClickLogBhv;
import org.codelibs.fess.opensearch.log.exbhv.FavoriteLogBhv;
import org.codelibs.fess.unit.UnitFessTestCase;

/* jcifs smb client library in Java
 * Copyright (C) 2004  "Michael B. Allen" <jcifs at samba dot org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,

/* jcifs smb client library in Java
 * Copyright (C) 2003  "Michael B. Allen" <jcifs at samba dot org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,