**Template Method**: `AbstractCrawlerClient`, `AbstractExtractor` - common logic with overrides
**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

    private CrawlerPooledObjectFactory<TestComponent> factory;
    private StandardCrawlerContainer container;

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        // Reset counters before each test
        TestComponent.resetCounter();
        SingletonTestComponent.resetInstanceCount();
        CloseableTestComponent.resetCounters();

        // Initialize container with test components

	CSRRW	X0, CYCLE, X5				// f31200c0
	CSRRW	X0, CYCLE, X0				// 731000c0
	CSRRW	X10, CYCLE, X5				// f31205c0
	CSRRW	$2, TIME, X5				// f35211c0
	CSRRWI	$2, TIME, X5				// f35211c0

	// 8.1: Base Counters and Timers (Zicntr)
	RDCYCLE		X5				// f32200c0
	RDTIME		X5				// f32210c0
	RDINSTRET	X5				// f32220c0

	// 12.3: Integer Conditional Operations (Zicond)
	CZEROEQZ	X5, X6, X7			// b353530e

R12 BSWAPL R10 BSWAPL R12 PXOR X0, X11 MOVOU X11, 128(SP) ADDL $0x01, R10 MOVL R10, R11 XORL R12, R11 BSWAPL R11 MOVL R11, 140(SP) CMPQ R9, $0x80 JB gcmAesEncSingles SUBQ $0x80, R9 // We have at least 8 blocks to encrypt, prepare the rest of the counters MOVOU X11, 144(SP) ADDL $0x01, R10 MOVL R10, R11 XORL R12, R11 BSWAPL R11 MOVL R11, 156(SP) MOVOU X11, 160(SP) ADDL $0x01, R10 MOVL R10, R11 XORL R12, R11 BSWAPL R11 MOVL R11, 172(SP) MOVOU X11, 176(SP) ADDL $0x01, R10 MOVL R10, R11 XORL R12, R11...