**FastAPI** は、それぞれの場合の処理​​方法と同じオブジェクトの再利用方法を知っているため、すべてのバックグラウンドタスクがマージされ、バックグラウンドで後で実行されます。

{* ../../docs_src/background_tasks/tutorial002.py hl[13,15,22,25] *}

この例では、レスポンスが送信された *後* にメッセージが `log.txt` ファイルに書き込まれます。

リクエストにクエリがあった場合、バックグラウンドタスクでログに書き込まれます。

そして、*path operations 関数* で生成された別のバックグラウンドタスクは、`email` パスパラメータを使用してメッセージを書き込みます。

## 技術的な詳細

    * A "token" is just a string with some content that we can use later to verify this user.
    * Normally, a token is set to expire after some time.
        * So, the user will have to log in again at some point later.
        * And if the token is stolen, the risk is less. It is not like a permanent key that will work forever (in most of the cases).
* The frontend stores that token temporarily somewhere.

<div class="wrapper">
    <jsp:include page="/WEB-INF/view/common/admin/header.jsp"></jsp:include>
    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="log"/>
        <jsp:param name="menuType" value="failureUrl"/>
    </jsp:include>
    <main class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">

<div class="wrapper">
    <jsp:include page="/WEB-INF/view/common/admin/header.jsp"></jsp:include>
    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="log"/>
        <jsp:param name="menuType" value="maintenance"/>
    </jsp:include>
    <main class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">

        LogStream logStream = new LogStream(testStream);
        assertNotNull(logStream);
        assertTrue(logStream instanceof PrintStream);
    }

    @Test
    void testSetLevel() {
        // Test setting log level
        LogStream.setLevel(0);
        assertEquals(0, LogStream.level);

        LogStream.setLevel(1);
        assertEquals(1, LogStream.level);

        LogStream.setLevel(3);

package tests_test

import (
	"errors"
	"log"
	"os"
	"reflect"
	"strings"
	"testing"

	"gorm.io/gorm"
	. "gorm.io/gorm/utils/tests"
)

type Product struct {
	gorm.Model
	Name                  string
	Code                  string
	Price                 float64
	AfterFindCallTimes    int64
	BeforeCreateCallTimes int64
	AfterCreateCallTimes  int64
	BeforeUpdateCallTimes int64
	AfterUpdateCallTimes  int64

                .build());
        options.addOption(Option.builder(LOG_FILE)
                .longOpt("log-file")
                .hasArg()
                .desc("Log file where all build output will go (disables output color)")
                .build());
        options.addOption(Option.builder(Character.toString(SHOW_VERSION))

		} else {
			logger.Fatal(config.ErrUnableToWriteInBackend(err).Hint("%s", hint), "Unable to initialize backend")
		}
	case errors.Is(err, errFaultyDisk):
		if !exit {
			storageLogOnceIf(GlobalContext, fmt.Errorf("Drive is faulty at %s, please replace the drive - drive will be offline", endpoint), "log-fatal-errs")
		} else {

  val showHeaders: Boolean by option("-i", "--include").help("Include protocol headers in the output").flag()

  val showHttp2Frames: Boolean by option("--frames").help("Log HTTP/2 frames to STDERR").flag()

  val referer: String? by option("-e", "--referer").help("Referer URL")

  val verbose: Boolean by option("-v", "--verbose").help("Makes $NAME verbose during the operation").flag()

                    logger.debug("Logout response.", e);
                }
                saveInfo(e.getMessageCode());
            } else {
                logger.warn("Failed to log out.", e);
                saveError(e.getMessageCode());
            }
            return redirect(LoginAction.class);
        }
    }