protected int userInfoCacheSize = 10000;

    /** Queue for storing search logs. */
    protected Queue<SearchLog> searchLogQueue = new ConcurrentLinkedQueue<>();

    /** Queue for storing click logs. */
    protected Queue<ClickLog> clickLogQueue = new ConcurrentLinkedQueue<>();

    /** Cache for storing user information. */
    protected LoadingCache<String, UserInfo> userInfoCache;

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

import java.net.Socket
import java.util.concurrent.ConcurrentLinkedQueue
import java.util.concurrent.ThreadLocalRandom
import java.util.concurrent.TimeUnit
import java.util.concurrent.atomic.AtomicReferenceFieldUpdater
import okhttp3.Address
import okhttp3.ConnectionPool

import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.CoreLibConstants;

   *     the size method
   */
  public static <T extends @Nullable Object> Collection<T> misleadingSizeCollection(int delta) {
    // It would be nice to be able to return a real concurrent
    // collection like ConcurrentLinkedQueue, so that e.g. concurrent
    // iteration would work, but that would not be GWT-compatible.
    // We are not "just" inheriting from ArrayList here as this doesn't work for J2kt.
    return new AbstractList<T>() {

import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicBoolean;

import org.codelibs.core.io.FileUtil;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.misc.DynamicProperties;

#### Per-Connection Locks

Each connection has its own lock. The connections in the pool are all in a `ConcurrentLinkedQueue`. Due to data races, iterators of this queue may return removed connections. Callers must check the connection's `noNewExchanges` property before using connections from the pool.