# 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:

    local data="$2"

    local response=$(curl -X POST \
        -H "Authorization: token $GITHUB_TOKEN" \
        -H "Accept: application/vnd.github.v3+json" \
        -H "Content-Type: application/json" \
        "https://api.github.com/repos/gradle/gradle$endpoint" \
        -d "$data" \
        -w "\n%{http_code}" \
        2>/dev/null)

    local http_code=$(echo "$response" | tail -n1)

ミドルウェア関数は以下を受け取ります:

* `request`。
* パラメータとして `request` を受け取る関数 `call_next`。
    * この関数は、対応する*path operation*に `request` を渡します。
    * 次に、対応する*path operation*によって生成された `response` を返します。
* その後、`response` を返す前にさらに `response` を変更することもできます。

{* ../../docs_src/middleware/tutorial001_py310.py hl[8:9,11,14] *}

/// tip | 豆知識

            final RequestParam... params) throws CIFSException {
        return this.treeConnection.send(this.resourceLoc, request, response, params);
    }

    /**
     *
     * @param request
     * @param response
     * @param params
     * @return response
     * @throws CIFSException
     */

	Quorum *int `msgp:"omitempty"`
}

// ResponseCode is the response code for a locking request.
type ResponseCode uint8

// Response codes for a locking request.
const (
	RespOK ResponseCode = iota
	RespLockConflict
	RespLockNotInitialized
	RespLockNotFound
	RespErr
)

// LockResp is a locking request response.
type LockResp struct {
	Code ResponseCode
	Err  string

import jcifs.internal.smb1.trans.SmbComTransaction;
import jcifs.internal.smb1.trans.SmbComTransactionResponse;
import jcifs.internal.util.SMBUtil;

/**
 * Trans2 FindFirst2 response message for SMB1 directory enumeration.
 * This class handles the response from a TRANS2_FIND_FIRST2 request, which returns
 * the first set of directory entries matching the specified search criteria.
 */

client = TestClient(app)


def test_get():
    response = client.post(
        "/invoices/", json={"id": "fooinvoice", "customer": "John", "total": 5.3}
    )
    assert response.status_code == 200, response.text
    assert response.json() == {"msg": "Invoice received"}


def test_openapi_schema():
    with client:
        response = client.get("/openapi.json")
        assert response.json() == snapshot(
            {

import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
import org.codelibs.fess.opensearch.config.exentity.ScheduledJob;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.JsonResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin scheduler management.
 */
public class ApiAdminSchedulerAction extends FessApiAdminAction {

* completion (in the context of autocompletion): autocompletado
* feature: funcionalidad
* sponsor: sponsor
* host (in a podcast): host
* request (as in HTTP request): request
* response (as in HTTP response): response
* path operation function: path operation function (do not translate to "función de operación de ruta")
* path operation: path operation (do not translate to "operación de ruta")

    val call =
      client.newCall(
        Request
          .Builder()
          .url(server.url("/"))
          .build(),
      )
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("abc")
    response.body.close()
    assertThat(listener.recordedEventTypes()).containsExactly(
      "ConnectStart",
      "ConnectEnd",
      "ConnectionAcquired",