* logged.
   *
   * @param listener the listener to run when the service changes state is complete
   * @param executor the executor in which the listeners callback methods will be run. For fast,
   *     lightweight listeners that would be safe to execute in any thread, consider {@link
   *     MoreExecutors#directExecutor}.
   * @since 13.0
   */
  void addListener(Listener listener, Executor executor);

  /**

        assertFalse(emptyIterator.hasNext(), "Final hasNext check");
        assertNull(emptyIterator.next(), "Final next call");
    }

    @Test
    @DisplayName("EmptyIterator should be lightweight and efficient")
    void testPerformanceCharacteristics() {
        // When - create many instances quickly
        long startTime = System.currentTimeMillis();

        for (int i = 0; i < 10000; i++) {

 *
 * @author Colin Decker
 */
final class SubscriberRegistry {

  /**
   * All registered subscribers, indexed by event type.
   *
   * <p>The {@link CopyOnWriteArraySet} values make it easy and relatively lightweight to get an
   * immutable snapshot of all current subscribers to an event without any locking.
   */
  private final ConcurrentMap<Class<?>, CopyOnWriteArraySet<Subscriber>> subscribers =
      Maps.newConcurrentMap();

plexus-container-default 1.0-alpha-8 org.codehaus.plexus plexus-utils 1.0.4 org.apache.maven.wagon wagon-provider-api 1.0-alpha-5 org.apache.maven.wagon wagon-ssh 1.0-alpha-5 org.apache.maven.wagon wagon-file 1.0-alpha-5 org.apache.maven.wagon wagon-http-lightweight 1.0-alpha-5 repo1 Maven Central Repository scp://repo1.maven.org/home/projects/maven/repository-staging/to-ibiblio/maven2 snapshots Maven Central Development Repository scp://repo1.maven.org/home/projects/maven/repository-staging/snapshots/maven2...

   * logged.
   *
   * @param listener the listener to run when the service changes state is complete
   * @param executor the executor in which the listeners callback methods will be run. For fast,
   *     lightweight listeners that would be safe to execute in any thread, consider {@link
   *     MoreExecutors#directExecutor}.
   * @since 13.0
   */
  void addListener(Listener listener, Executor executor);

  /**

        <artifactId>wagon-file</artifactId>
        <version>${wagonVersion}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven.wagon</groupId>
        <artifactId>wagon-http-lightweight</artifactId>
        <version>${wagonVersion}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven.wagon</groupId>
        <artifactId>wagon-ssh</artifactId>

Containers (mainly Linux containers) are a very **lightweight** way to package applications including all their dependencies and necessary files while keeping them isolated from other containers (other applications or components) in the same system.

        <artifactId>wagon-file</artifactId>
        <version>${wagonVersion}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven.wagon</groupId>
        <artifactId>wagon-http-lightweight</artifactId>
        <version>${wagonVersion}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven.wagon</groupId>
        <artifactId>wagon-ssh</artifactId>

  /**
   * Returns an {@link Executor} that runs each task in the thread that invokes {@link
   * Executor#execute execute}, as in {@link CallerRunsPolicy}.
   *
   * <p>This executor is appropriate for tasks that are lightweight and not deeply chained.
   * Inappropriate {@code directExecutor} usage can cause problems, and these problems can be
   * difficult to reproduce because they depend on timing. For example:
   *
   * <ul>

///

### <a href="https://www.starlette.dev/" class="external-link" target="_blank">Starlette</a> { #starlette }

Starlette is a lightweight <abbr title="The new standard for building asynchronous Python web applications">ASGI</abbr> framework/toolkit, which is ideal for building high-performance asyncio services.