<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN" 
	"http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
	<!-- Crawler Thread -->
	<component name="crawlerThread" class="org.codelibs.fess.crawler.FessCrawlerThread" instance="prototype" >
	</component>

                }
            }
        } catch (final InterruptedException e) {
            logger.warn("Interrupted generating thumbnail: id={}, command={}", thumbnailId, cmdList, e);
            Thread.currentThread().interrupt();
        } catch (final Exception e) {
            logger.warn("Failed to generate thumbnail: id={}, command={}", thumbnailId, cmdList, e);
        } finally {
            if (task != null) {

Mas antes disso, controlar código assíncrono era bem mais complexo e difícil.

Nas versões anteriores do Python, você poderia utilizar threads ou [Gevent](https://www.gevent.org/). Mas o código é bem mais complexo de entender, debugar, e pensar sobre.

Nas versões anteriores do NodeJS / Navegador JavaScript, você utilizaria "callbacks". O que leva ao "inferno do callback".

        this.session = session;
        this.project = project;
        ClassLoader ttcl = Thread.currentThread().getContextClassLoader();
        try {
            Thread.currentThread().setContextClassLoader(project.getClassRealm());
            this.packaging = session.requirePackaging(project.getPackaging());
        } finally {
            Thread.currentThread().setContextClassLoader(ttcl);
        }
    }

                // Don't start thread
                generating = false;
            }

            @Override
            protected void storeQueue(List<Tuple3<String, String, String>> taskList) {
                taskList.clear();
            }

            @Override
            public void destroy() {
                // Override to avoid null pointer issues with thread
                generating = false;

                                    BASE_RETRY_DELAY * (1L << Math.min(MAX_BACKOFF_SHIFT, getFailureCount(handle))));
                            Thread.sleep(retryDelay);
                        } catch (InterruptedException ie) {
                            Thread.currentThread().interrupt();
                            break;
                        }
                    }
                }
            }

        assertTrue(seq2 > seq1);
        assertTrue(seq3 > seq2);
    }

    @Test
    void testHeartbeatUpdate() throws InterruptedException {
        long initialTime = registration.getLastHeartbeat();

        Thread.sleep(50); // Ensure sufficient time difference
        registration.updateHeartbeat();

        // After update, should not be expired with long timeout
        assertFalse(registration.isExpired(60000));

    ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();

    Thread.currentThread().setContextClassLoader(classLoader);
    try {
      Class<?> test = classLoader.loadClass(AbstractFutureTest.class.getName());
      test.getMethod(getName()).invoke(test.getDeclaredConstructor().newInstance());
    } finally {
      Thread.currentThread().setContextClassLoader(oldClassLoader);
    }

        this.context = context;
        this.handles = new ConcurrentHashMap<>();
        this.guidToHandle = new ConcurrentHashMap<>();
        this.scheduler = Executors.newScheduledThreadPool(1, r -> {
            Thread t = new Thread(r, "PersistentHandleManager");
            t.setDaemon(true);
            return t;
        });

        // Create state directory for persistent storage

labels.includedDocPaths=Chemins inclus pour la recherche
labels.includedDocUrls=URL incluses pour la recherche
labels.maxAccessCount=Nombre d'accès maximum
labels.name=Nom
labels.numOfThread=Nombre de threads
labels.duplicateHostName=Nom d'hôte en double
labels.pageNumber=Numéro de page
labels.password=Mot de passe
labels.paths=Chemins
labels.port=Port
labels.regex=Expression régulière
labels.regularName=Nom régulier