<div class="screenshot">
<img src="/img/tutorial/sql-databases/image01.png">
</div>

## Update the App with Multiple Models { #update-the-app-with-multiple-models }

Now let's **refactor** this app a bit to increase **security** and **versatility**.

## Dependencies for groups of *path operations* { #dependencies-for-groups-of-path-operations }

        assertEquals("NTLM", request.getAuthType());
        verify(mockPrincipal, times(1)).getName();
    }

    @ParameterizedTest
    @ValueSource(strings = { "", "   ", "unknown" })
    @DisplayName("supports multiple principal name variants")
    void testPrincipalNameVariants(String name, @Mock HttpServletRequest mockRequest, @Mock Principal mockPrincipal) {
        when(mockPrincipal.getName()).thenReturn(name);

They tend to require more complex configurations, a message/job queue manager, like RabbitMQ or Redis, but they allow you to run background tasks in multiple processes, and especially, in multiple servers.

But if you need to access variables and objects from the same **FastAPI** app, or you need to perform small background tasks (like sending an email notification), you can simply just use `BackgroundTasks`.

		//  Used to test the listing for the case of multiple uploadID's for a given object.
		res, err = obj.NewMultipartUpload(context.Background(), bucketNames[1], objectNames[0], opts)
		if err != nil {
			// Failed to create NewMultipartUpload, abort.
			t.Fatalf("%s : %s", instanceType, err.Error())
		}

		uploadIDs = append(uploadIDs, res.UploadID)
	}

	// Bucket to test for multiple objects, each with unique UUID.

            assertEquals(0, init.getContextFlags());
        }

        @Test
        @DisplayName("Multiple flags can be combined correctly")
        void testMultipleFlagsCombination() {
            NegTokenInit init = new NegTokenInit();

            // Set multiple flags
            init.setContextFlag(NegTokenInit.DELEGATION, true);
            init.setContextFlag(NegTokenInit.INTEGRITY, true);

### Phase 3: Multi-Channel Support
**Priority: MEDIUM** | **Estimated Effort: 5-6 weeks**

Multi-channel enables using multiple network connections for improved performance and reliability.

#### 3.1 Core Multi-Channel Infrastructure
```
Package: jcifs.internal.smb2.multichannel
├── ChannelManager.java           - Manage multiple channels per session
├── ChannelBinding.java           - Channel binding and security

	I        MultiFlag
	PrintOut int
	DebugV   bool
)

func init() {
	flag.Var(&D, "D", "predefined symbol with optional simple value -D=identifier=value; can be set multiple times")
	flag.Var(&I, "I", "include directory; can be set multiple times")
	flag.BoolVar(&DebugV, "v", false, "print debug output")
	flag.Var(objabi.NewDebugFlag(&DebugFlags, nil), "d", "enable debugging settings; try -d help")
	objabi.AddVersionFlag() // -V

            assertEquals(1, SMBUtil.readInt2(buffer, 0));
            assertEquals(EncryptionNegotiateContext.CIPHER_AES128_CCM, SMBUtil.readInt2(buffer, 2));
        }

        @Test
        @DisplayName("Should encode multiple ciphers correctly")
        void testEncodeMultipleCiphers() {
            int[] ciphers = { EncryptionNegotiateContext.CIPHER_AES128_CCM, EncryptionNegotiateContext.CIPHER_AES128_GCM };

        assertEquals(SmbComTransaction.TRANS2_SET_FILE_INFORMATION, newResponse.getSubCommand());
    }

    @Test
    @DisplayName("Test multiple sequential calls to read/write methods")
    void testMultipleSequentialCalls() {
        byte[] buffer = new byte[200];

        // Multiple calls should each return 0
        for (int i = 0; i < 10; i++) {
            assertEquals(0, response.writeSetupWireFormat(buffer, i * 10));