```java
// Configure for background execution
crawler.setBackground(true);
String sessionId = crawler.execute();

// Check crawling status
while (crawler.crawlerContext.getStatus() == CrawlerStatus.RUNNING) {
    Thread.sleep(1000);
    System.out.println("Crawling in progress...");
}

// Wait for completion
crawler.awaitTermination();
System.out.println("Crawling completed");
```

 * and provides methods for logging messages using {@link LogHelper}.
 * </p>
 *
 * <p>
 * The crawling process continues until the crawler status is {@link CrawlerStatus#DONE} or the
 * {@link #isContinue(int)} method returns {@code false}.
 * </p>
 *
 */
public class CrawlerThread implements Runnable {
    /**
     * Constructs a new CrawlerThread.
     */

### CrawlerContext (`CrawlerContext.java`)

Execution context and configuration.

**Important Fields**:
```java
String sessionId                // Format: yyyyMMddHHmmssSSS
volatile CrawlerStatus status   // DONE, RUNNING
AtomicLong accessCount          // Thread-safe counter
int numOfThread = 10            // Crawler threads
int maxDepth = -1               // Max depth (-1 = unlimited)

    // Crawler Info Map Keys
    // ============================================================

    /** Info map key for crawler status information. */
    public static final String CRAWLER_STATUS = "CrawlerStatus";

    /** Info map key for crawler error information. */
    public static final String CRAWLER_ERRORS = "CrawlerErrors";

    /** Info map key for crawler start time. */

labels.crawling_info_CrawlerStartTime=Starttijd crawler
labels.crawling_info_CrawlerEndTime=Eindtijd crawler
labels.crawling_info_CrawlerExecTime=Uitvoeringstijd crawler
labels.crawling_info_CrawlerStatus=Crawlerstatus
labels.crawling_info_WebFsCrawlExecTime=Crawltijd (Web/Bestand)
labels.crawling_info_WebFsCrawlStartTime=Starttijd crawl (Web/Bestand)
labels.crawling_info_WebFsCrawlEndTime=Eindtijd crawl (Web/Bestand)