Gardez cela à l'esprit lorsque vous lisez "serveur" en général, cela pourrait faire référence à l'une de ces deux choses.

Lorsqu'on se réfère à la machine distante, il est courant de l'appeler **serveur**, mais aussi **machine**, **VM** (machine virtuelle), **nœud**. Tout cela fait référence à un type de machine distante, exécutant  Linux, en règle générale, sur laquelle vous exécutez des programmes.

  @Override
  @Nullable V getIfCached(@Nullable Object key) {
    V value = super.getIfCached(key);
    if (value != null) {
      return value;
    }

    // Store a local reference to the cache entry. If the backing map is immutable, this,
    // in combination with immutable cache entries, will ensure a thread-safe cache.
    CacheEntry<K, V> entry;

     */
    protected final Map<Long, Response> response_map = new ConcurrentHashMap<>(10);
    private final AtomicLong usageCount = new AtomicLong(1);

    /**
     * Acquires a reference to this transport, incrementing the usage count.
     *
     * @return session increased usage count
     */
    public Transport acquire() {
        final long usage = this.usageCount.incrementAndGet();

 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package okhttp3.internal.connection

import java.io.IOException
import java.lang.ref.Reference
import java.net.Proxy
import java.net.Socket as JavaNetSocket
import java.net.SocketException
import java.security.cert.X509Certificate
import java.util.concurrent.TimeUnit.MILLISECONDS

import java.io.IOException;

/**
 * Exception thrown when an error occurs during NDR encoding or decoding operations.
 */
public class NdrException extends IOException {

    /**
     * Error message for null reference pointers.
     */
    public static final String NO_NULL_REF = "ref pointer cannot be null";

    /**
     * Error message for invalid array conformance.
     */

    val references = connection.calls
    var i = 0
    while (i < references.size) {
      val reference = references[i]

      if (reference.get() != null) {
        i++
        continue
      }

      // We've discovered a leaked call. This is an application bug.
      val callReference = reference as CallReference
      val message =
        "A connection to ${connection.route().address.url} was leaked. " +

 * be used as a {@code Predicate} directly. To use a {@code java.util.function.Predicate} where a
 * {@code com.google.common.base.Predicate} is expected, use the method reference {@code
 * predicate::test}.
 *
 * <p>This interface is now a legacy type. Use {@code java.util.function.Predicate} (or the
 * appropriate primitive specialization such as {@code IntPredicate}) instead whenever possible.

import java.util.Iterator;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * A utility for testing an Iterator implementation by comparing its behavior to that of a "known
 * good" reference implementation. In order to accomplish this, it's important to test a great
 * variety of sequences of the {@link Iterator#next}, {@link Iterator#hasNext} and {@link

    extends AbstractFuture.TrustedFuture<OutputT> {
  // Lazily initialized the first time we see an exception; not released until all the input futures
  // & this future completes. Released when the future releases the reference to the running state
  private @Nullable Set<Throwable> seenExceptions = null;
  private int remaining;

  AggregateFutureState(int remainingFutures) {
    this.remaining = remainingFutures;
  }

   */
  public static <T extends @Nullable Object> Predicate<T> alwaysFalse() {
    return ObjectPredicate.ALWAYS_FALSE.withNarrowedType();
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is
   * null.
   *
   * <p><b>Discouraged:</b> Prefer using either {@code x -> x == null} or {@code Objects::isNull},
   * but note that lambdas and method references do not have human-readable {@link #toString()}