## Optimize Response Performance - Response Model - Return Type { #optimize-response-performance-response-model-return-type }

To optimize performance when returning JSON data, use a return type or response model, that way Pydantic will handle the serialization to JSON on the Rust side, without going through Python. Read more in the docs for [Tutorial - Response Model - Return Type](../tutorial/response-model.md).

participant client as Client
participant handler as Exception handler
participant dep as Dep with yield
participant operation as Path Operation
participant tasks as Background tasks

    Note over client,operation: Can raise exceptions, including HTTPException
    client ->> dep: Start request
    Note over dep: Run code up to yield
    opt raise Exception
        dep -->> handler: Raise Exception

			return
		}

		var handler *StatelessHandler
		if subID == nil {
			handler = c.handlers.stateless[m.Handler]
		} else {
			handler = c.handlers.subStateless[*subID]
		}
		if handler == nil {
			msg := fmt.Sprintf("Invalid Handler for type: %v", m.Handler)
			if subID != nil {
				msg = fmt.Sprintf("Invalid Handler for type: %v", *subID)
			}

                }
                // Another thread changed the state, re-evaluate
                return state.get();
            }
        }

        return current;
    }

    /**
     * Handle successful call
     */
    private void onSuccess() {
        totalSuccesses.incrementAndGet();
        consecutiveFailures.set(0);

        State current = state.get();

    public void setUp() throws IOException {
        MockitoAnnotations.openMocks(this);

        // Create temporary directory for test state
        tempDir = Files.createTempDirectory("jcifs-test-handles");

        // Set system property for handle state directory
        System.setProperty("jcifs.smb.client.handleStateDirectory", tempDir.toString());

        when(mockContext.getConfig()).thenReturn(mockConfig);

pkg log/slog, type Handler interface, Enabled(context.Context, Level) bool #56345
pkg log/slog, type Handler interface { Enabled, Handle, WithAttrs, WithGroup } #56345
pkg log/slog, type Handler interface, Handle(context.Context, Record) error #56345
pkg log/slog, type Handler interface, WithAttrs([]Attr) Handler #56345
pkg log/slog, type Handler interface, WithGroup(string) Handler #56345

 *   <li>Audit logging of operations</li>
 *   <li>Performance monitoring of nested operations</li>
 * </ul>
 *
 * <p>This interface is designed to be extended by specific request types that handle
 * different Maven operations. All implementations must be immutable to ensure thread safety
 * and predictable behavior in concurrent environments.
 *

pkg syscall (windows-386), func CreateFileMapping(Handle, *SecurityAttributes, uint32, uint32, uint32, *uint16) (Handle, error)
pkg syscall (windows-386), func CreateIoCompletionPort(Handle, Handle, uint32, uint32) (Handle, error)
pkg syscall (windows-386), func CreatePipe(*Handle, *Handle, *SecurityAttributes, uint32) error

            // When
            SmbWatchHandle watchHandle = mockResource.watch(filter, true);

            // Then
            assertNotNull(watchHandle, "Watch handle should not be null");
            assertSame(mockWatchHandle, watchHandle, "Should return expected watch handle");
        }
    }

    @Nested
    @DisplayName("Security Operations Tests")
    class SecurityOperationsTests {

        @Test

    private byte[] fileId;
    private Smb2QueryDirectoryResponse response;

    /**
     * Creates a directory entry enumeration iterator for SMB2 protocol.
     *
     * @param th the SMB tree handle for the connection
     * @param parent the parent resource being enumerated
     * @param wildcard the wildcard pattern for filtering entries
     * @param filter additional resource name filter to apply