**DI**: LastaFlute container with `@Resource` and XML config

### Core Principles

**Thread Safety**:
- `AtomicLong` for counters (`CrawlerContext.accessCount`)
- `volatile` for status flags
- Synchronized blocks for critical sections
- Thread-local storage via `CrawlingParameterUtil`

**Resource Management**:
- `AutoCloseable` throughout

          @Override
          public Thread newThread(Runnable r) {
            Thread thread = new Thread(r);
            thread.setName(THREAD_NAME);
            thread.setPriority(THREAD_PRIORITY);
            thread.setDaemon(THREAD_DAEMON);
            thread.setUncaughtExceptionHandler(UNCAUGHT_EXCEPTION_HANDLER);
            return thread;
          }
        };

    Thread thread =

        @DisplayName("Should maintain thread safety")
        void testThreadSafety() throws InterruptedException {
            int threadCount = 10;
            Thread[] threads = new Thread[threadCount];
            boolean[] success = new boolean[threadCount];

            for (int i = 0; i < threadCount; i++) {
                final int index = i;
                threads[i] = new Thread(() -> {
                    try {

        .connectionPool(ConnectionPool(connectionListener = connectionListener))
    }

  private fun loomThreadFactory(): ThreadFactory {
    val ofVirtual = Thread::class.java.getMethod("ofVirtual").invoke(null)

    return Class
      .forName("java.lang.Thread\$Builder")
      .getMethod("factory")
      .invoke(ofVirtual) as ThreadFactory
  }

            } else {
                t.url = args[ai];
            }
        }

        final Thread[] threads = new Thread[t.numThreads];
        int ti;

        for (ti = 0; ti < t.numThreads; ti++) {
            threads[ti] = new Thread(t);
            logger.info(threads[ti].getName());
            threads[ti].start();
        }

            threads[i] = new Thread(() -> {
                byte[] threadFileId = new byte[16];
                Arrays.fill(threadFileId, (byte) index);
                request.setFileId(threadFileId);
            });
            threads[i].start();
        }

        // Wait for all threads to complete
        for (Thread thread : threads) {
            thread.join();
        }

    @Override
    public String toString() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.toString();
    }

    @Override
    public boolean equals(@Nullable Object o) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.equals(o);
    }

    @Override
    public int hashCode() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.hashCode();
    }

        // be ignored; see tryClose comment.
        if (socket == null) {
            socket = new DatagramSocket(lport, laddr);
            thread = new Thread(this, "JCIFS-NameServiceClient");
            thread.setDaemon(true);
            thread.start();
        }
    }

    void tryClose() {
        synchronized (LOCK) {

            /* Yes, there is the potential to drop packets

    @Override
    public boolean offer(E o) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.offer(o);
    }

    @Override
    public @Nullable E poll() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.poll();
    }

    @Override
    public E remove() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.remove();
    }

    @Override

      }
    }

    void stopInterrupting() {
      shouldStop = true;
    }
  }

  /** Interrupts the current thread after sleeping for the specified delay. */
  static void requestInterruptIn(long time, TimeUnit unit) {
    checkNotNull(unit);
    Thread interruptee = Thread.currentThread();
    new Thread(
            new Runnable() {
              @Override
              public void run() {
                try {