| Scheduler | Lasta Job |
| Logging | Log4j2 |
| Testing | JUnit 4/5, UTFlute, REST Assured |

## Development Commands

### Setup
```bash
mvn antrun:run          # Download OpenSearch plugins (required before first build)
mvn dbflute:download    # One-time setup for DBFlute
mvn dbflute:freegen     # Generate DBFlute source code
mvn license:format      # Add license headers
```

### Build
```bash

/**
 * Test class for SystemMonitorTarget.
 */
public class SystemMonitorTargetTest extends UnitFessTestCase {

    private SystemMonitorTarget target;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        target = new SystemMonitorTarget();
    }

    @Test
    public void test_inheritance() {

public class FessApiFailureHookTest extends UnitFessTestCase {

    private FessApiFailureHook apiFailureHook;
    private FessConfig originalFessConfig;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        ComponentUtil.register(new SystemHelper(), "systemHelper");
        apiFailureHook = new FessApiFailureHook();
        originalFessConfig = ComponentUtil.getFessConfig();
    }

 */
public class HotThreadMonitorTargetTest extends UnitFessTestCase {

    private HotThreadMonitorTarget target;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        target = new HotThreadMonitorTarget();
    }

    @Test
    public void test_inheritance() {

public class LogNotificationTargetTest extends UnitFessTestCase {

    private LogNotificationTarget logNotificationTarget;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        ComponentUtil.register(new LogNotificationHelper(), "logNotificationHelper");
        ComponentUtil.getLogNotificationHelper().drainAll();

    private InvertibleCryptographer invertibleCryptographer;
    private OneWayCryptographer oneWayCryptographer;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);

        // Create InvertibleCryptographer with AES
        invertibleCryptographer = InvertibleCryptographer.createAesCipher("1234567890123456");

    private FessCookieResourceProvider cookieResourceProvider;
    private FessConfig originalFessConfig;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);

        originalFessConfig = ComponentUtil.getFessConfig();

        // Set up test FessConfig
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {

    private FessCurtainBeforeHook curtainBeforeHook;
    private TimeZone originalTimeZone;
    private DfFinalTimeZoneProvider originalProvider;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        curtainBeforeHook = new FessCurtainBeforeHook();
        // Store original timezone settings
        originalTimeZone = TimeZone.getDefault();

import org.junit.jupiter.api.TestInfo;

public class AbstractConfigHelperTest extends UnitFessTestCase {

    private TestConfigHelper configHelper;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        configHelper = new TestConfigHelper();
    }

    @Test
    public void test_setReloadInterval() {
        assertEquals(1000L, configHelper.reloadInterval);

public class CronExpressionValidatorTest extends UnitFessTestCase {

    public CronExpressionValidator validator;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        validator = new CronExpressionValidator();
    }

    @Test
    public void test_isValid_nullValue() {
        final ConstraintValidatorContext context = null;