try {
            final URI uri = new URI(url);
            final String host = uri.getHost();
            if (host == null) {
                return;
            }
            final AtomicLong lastTime = lastTimes.putIfAbsent(host, new AtomicLong(SystemUtil.currentTimeMillis()));
            if (lastTime == null) {
                return;
            }
            synchronized (lastTime) {
                while (true) {

     */
    public IndexUpdateCallbackImpl() {
        // Default constructor
    }

    /** Atomic counter for the number of documents processed */
    protected AtomicLong documentSize = new AtomicLong(0);

    /** Total execution time for all operations */
    protected volatile long executeTime = 0;

    /** List of documents waiting to be indexed */

    // Test implementation of IndexUpdateCallback for testing purposes
    private static class TestIndexUpdateCallback implements IndexUpdateCallback {
        private final AtomicLong documentCount = new AtomicLong(0);
        private final AtomicLong executeTime = new AtomicLong(0);
        private final AtomicBoolean committed = new AtomicBoolean(false);
        private final long startTime = System.currentTimeMillis();

        @Override

```java
class PrintingEventListener extends EventListener {
  public static final Factory FACTORY = new Factory() {
    final AtomicLong nextCallId = new AtomicLong(1L);

    @Override public EventListener create(Call call) {
      long callId = nextCallId.getAndIncrement();
      System.out.printf("%04d %s%n", callId, call.request().url());

 *
 * <p>This class is thread-safe.
 *
 * @author Jige Yu
 * @since 10.0
 */
@NullMarked
@GwtCompatible
public class FakeTicker extends Ticker {

  private final AtomicLong nanos = new AtomicLong();
  private volatile long autoIncrementStepNanos;

  /** Advances the ticker value by {@code time} in {@code timeUnit}. */
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration

 * the License.
 */

package com.google.common.hash;

import com.google.common.base.Supplier;
import java.util.concurrent.atomic.AtomicLong;

/**
 * Source of {@link LongAddable} objects that deals with GWT, Unsafe, and all that.
 *
 * @author Louis Wasserman
 */
final class LongAddables {
  private static final Supplier<LongAddable> SUPPLIER;

### 10.1 Directory Cache Statistics
```java
public class DirectoryCacheStatistics {
    private final AtomicLong cacheHits = new AtomicLong();
    private final AtomicLong cacheMisses = new AtomicLong();
    private final AtomicLong cacheInvalidations = new AtomicLong();
    private final AtomicLong changeNotifications = new AtomicLong();
    
    public double getCacheHitRatio() {
        long hits = cacheHits.get();

    // Rotation metrics
    private final AtomicLong totalKeyRotations = new AtomicLong(0);
    private final AtomicLong lastKeyRotationTime = new AtomicLong(0);

    /**
     * AES-128-CCM cipher identifier for SMB3 encryption
     */
    public static final int CIPHER_AES_128_CCM = EncryptionNegotiateContext.CIPHER_AES128_CCM;
    /**

     */
    protected Object activeThreadCountLock = new Object();

    /**
     * Atomic counter for tracking the number of accesses made.
     */
    protected AtomicLong accessCount = new AtomicLong(0);

    /**
     * Current status of the crawler.
     */
    protected volatile CrawlerStatus status = CrawlerStatus.INITIALIZING;

    /**

   *
   * @since 21.0
   */
  @CanIgnoreReturnValue
  public long getAndUpdate(K key, LongUnaryOperator updaterFunction) {
    checkNotNull(updaterFunction);
    AtomicLong holder = new AtomicLong();
    map.compute(
        key,
        (k, value) -> {
          long oldValue = (value == null) ? 0L : value.longValue();
          holder.set(oldValue);