## Creating a hotfix branch

Customers in MinIO are allowed LTS on any release they choose to standardize. Production setups seldom change and require maintenance. Hotfix branches are such maintenance branches that allow customers to operate a production cluster without drastic changes to their deployment.

## Backporting a fix

        String testValue = "HELLO WORLD";
        OptionalEntity<String> result = OptionalUtil.ofNullable(testValue);

        assertTrue(result.isPresent());

        // Test that we can chain operations
        String processed = result.map(s -> s.toLowerCase()).orElse("default");

        assertEquals("hello world", processed);

        // Test with null value

Esses **"type hints"** são uma sintaxe especial que permite declarar o <abbr title = "por exemplo: str, int, float, bool">tipo</abbr> de uma variável.

Ao declarar tipos para suas variáveis, editores e ferramentas podem oferecer um melhor suporte.

Este é apenas um **tutorial rápido / atualização** sobre type hints do Python. Ele cobre apenas o mínimo necessário para usá-los com o **FastAPI**... que é realmente muito pouco.

### Stwórz

* Utwórz plik o nazwie `main.py` z:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">

	}

	objectName := `\../.minio.sys/config/hello.txt`

	// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
	rec := httptest.NewRecorder()
	// construct HTTP request for Get Object end point.
	req, err := newTestSignedRequestV4(http.MethodPut, getPutObjectURL("", bucketName, objectName),

`UploadFile` tiene los siguientes métodos `async`. Todos ellos llaman a los métodos correspondientes del archivo por debajo (usando el `SpooledTemporaryFile` interno).

* `write(data)`: Escribe `data` (`str` o `bytes`) en el archivo.

    }

    @Test
    @DisplayName("Should encode and decode strings using byte operations")
    void testStringOperations() {
        // Given
        String testString = "Hello";
        byte[] buffer = new byte[testString.length()];

        // When - Manual string encoding using individual bytes
        byte[] strBytes = testString.getBytes();

import okio.GzipSource
import okio.buffer
import okio.use
import org.junit.jupiter.api.Test

class RequestTest {
  @Test
  fun constructor() {
    val url = "https://example.com/".toHttpUrl()
    val body = "hello".toRequestBody()
    val headers = headersOf("User-Agent", "RequestTest")
    val method = "PUT"
    val request =
      Request(
        url = url,
        headers = headers,
        method = method,

/**
 * Tests for {@link SerializableTester}.
 *
 * @author Nick Kralevich
 */
@NullUnmarked
public class SerializableTesterTest extends TestCase {
  public void testStringAssertions() {
    String original = "hello world";
    String copy = SerializableTester.reserializeAndAssert(original);
    assertEquals(original, copy);
    assertNotSame(original, copy);
  }

  public void testClassWhichDoesNotImplementEquals() {

./mc replicate add sitea/bucket --remote-bucket siteb/bucket

# Run the test to make sure proxying of DEL marker doesn't happen
loop_count=0
while true; do
	if [ $loop_count -eq 1000 ]; then
		break
	fi
	echo "Hello World" | ./mc pipe sitea/bucket/obj$loop_count
	./mc rm sitea/bucket/obj$loop_count
	RESULT=$({ ./mc stat --no-list sitea/bucket/obj$loop_count; } 2>&1)
	if [[ ${RESULT} != *"Object does not exist"* ]]; then