- Async handling of lease breaks

### 9.3 Network Efficiency
- Batch lease requests when possible
- Implement lease key reuse for related files
- Optimize lease break acknowledgment timing

## 10. Error Handling

### 10.1 Lease Break Timeout
```java
public void handleLeaseBreakWithTimeout(Smb2LeaseKey key, int newState) {
    CompletableFuture<Void> future = CompletableFuture.runAsync(() -> {

### Імпорт `Query` та `Annotated` { #import-query-and-annotated }

Щоб це зробити, спочатку імпортуємо:

* `Query` з `fastapi`
* `Annotated` з `typing`

{* ../../docs_src/query_params_str_validations/tutorial002_an_py310.py hl[1,3] *}

/// info | Інформація

FastAPI додав підтримку `Annotated` (і почав рекомендувати його) у версії 0.95.0.

Using Scala version 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112)
Type in expressions to have them evaluated.
Type :help for more information.

scala>
```

- At the _scala>_ prompt, submit the job by typing the following commands, Replace node names, file name, and file location with your values:

```
scala> val file = sc.textFile("s3a://testbucket/testdata")

   * representation to this hash code.
   *
   * <p><b>Security note:</b> this method uses a constant-time (not short-circuiting) implementation
   * to protect against <a href="http://en.wikipedia.org/wiki/Timing_attack">timing attacks</a>.
   */
  @Override
  public final boolean equals(@Nullable Object object) {
    if (object instanceof HashCode) {
      HashCode that = (HashCode) object;

    MavenExecutionRequest setBaseDirectory(File basedir);

    /**
     * @deprecated use {@link #getTopDirectory()} instead
     */
    @Deprecated
    String getBaseDirectory();

    // Timing (remove this)
    @Deprecated
    MavenExecutionRequest setStartTime(Date start);

    @Deprecated
    Date getStartTime();

    MavenExecutionRequest setStartInstant(Instant start);

        // Mock address for testing
        Address mockAddress = Mockito.mock(Address.class);
        Mockito.when(mockAddress.getHostAddress()).thenReturn("127.0.0.1");

        // Start timing
        long overallStart = System.nanoTime();

        for (int t = 0; t < threadCount; t++) {
            executor.submit(() -> {
                try {
                    startLatch.await();

* Valida **estruturas complexas**:
    * Use modelos hierárquicos do Pydantic, `List` e `Dict` do `typing` do Python, etc.
    * Validadores permitem que esquemas de dados complexos sejam limpos e facilmente definidos, conferidos e documentados como JSON Schema.

This ensures the endpoint takes roughly the same amount of time to respond whether the username is valid or not, preventing **timing attacks** that could be used to enumerate existing usernames.

/// note

* Nginx
* HAProxy

## Let's Encrypt { #lets-encrypt }

Let's Encrypt’ten önce bu **HTTPS sertifikaları**, güvenilen üçüncü taraflar tarafından satılırdı.

Bu sertifikalardan birini temin etme süreci zahmetliydi, epey evrak işi gerektirirdi ve sertifikalar oldukça pahalıydı.

Sonra **[Let's Encrypt](https://letsencrypt.org/)** ortaya çıktı.

import warnings
from collections.abc import Callable, Sequence
from dataclasses import dataclass
from enum import Enum
from typing import Annotated, Any, Literal

from fastapi.exceptions import FastAPIDeprecationWarning
from fastapi.openapi.models import Example
from pydantic import AliasChoices, AliasPath
from pydantic.fields import FieldInfo
from typing_extensions import deprecated

from ._compat import (
    Undefined,
)