}
```

由於這裡沒有包含已儲存的屬性 `"tax": 20.2`，輸入的模型會採用預設值 `"tax": 10.5`。

最終資料會以這個「新的」 `tax` 值 `10.5` 被儲存。

## 使用 `PATCH` 進行部分更新 { #partial-updates-with-patch }

你也可以使用 [HTTP `PATCH`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PATCH) 操作來進行*部分*更新。

這表示你只需傳送想要更新的資料，其餘保持不變。

/// note | 注意

`PATCH` 相較於 `PUT` 較少被使用、也較不為人知。

許多團隊甚至在部分更新時也只用 `PUT`。

你可以依需求自由選用，**FastAPI** 不會強制規範。

但本指南會大致示範它們各自的設計用法。

        facade.get();
        r++;
      } catch (CancellationException e) {
        r += 2;
      }
    }
    return r;
  }

  @Benchmark
  public long timeGetWith0Timeout(long reps) throws Exception {
    Facade<?> f = notDoneFuture;
    long r = 0;
    for (int i = 0; i < reps; i++) {
      try {
        f.get(0, SECONDS);
        r += 1;
      } catch (TimeoutException e) {
        r += 2;

         */
        return fromSystemProperty;
      } catch (InvocationTargetException e) {
        throwIfUnchecked(e.getCause()); // in case it's an Error or something
        return fromSystemProperty; // should be impossible
      } catch (NoSuchMethodException | IllegalAccessException shouldBeImpossible) {
        return fromSystemProperty;
      }
    }
  }

- Kube-apiserver: fixes a 1.27+ regression in watch stability by serving watch requests without a resourceVersion from the watch cache by default, as in <1.27 (disabling the change in #115096 by default). This mitigates the impact of an etcd watch bug (https://github.com/etcd-io/etcd/pull/17555). If the 1.27 change in #115096 to serve these requests from underlying storage is still desired despite the impact on watch stability, it can be re-enabled with a `WatchFromStorageWithoutResourceVersion`...

     */
    public Metadata read(Reader reader, boolean strict) throws IOException, XmlPullParserException {
        try {
            return new Metadata(delegate.read(reader, strict));
        } catch (XMLStreamException e) {
            throw new XmlPullParserException(e.getMessage(), null, e);
        }
    }

    /**
     * Method read.
     *
     * @param reader a reader object.
     * @return Metadata

                fos = null; // Successfully wrapped, no need to close explicitly
            } catch (final Exception e) {
                if (fos != null) {
                    try {
                        fos.close();
                    } catch (final IOException ioe) {
                        // Ignore close exception
                    }
                }

                if (!task.isExecuted()) {
                    task.run();
                }
            }
        } catch (final InterruptedException e) {
            logger.warn("Interrupted generating thumbnail: id={}, command={}", thumbnailId, cmdList, e);
            Thread.currentThread().interrupt();
        } catch (final Exception e) {
            logger.warn("Failed to generate thumbnail: id={}, command={}", thumbnailId, cmdList, e);

                scheduleRecoveryWithTransport(failedChannel, state, testTransport);
            } else {
                // Remove channel after max retries
                removeChannel(failedChannel);
            }
        } catch (Exception e) {
            // Recovery not possible, remove synchronously
            removeChannel(failedChannel);
            return;
        }
    }

    /**
     * Shutdown the failover handler
     */

   */
  static long toNanosSaturated(Duration duration) {
    // Using a try/catch seems lazy, but the catch block will rarely get invoked (except for
    // durations longer than approximately +/- 292 years).
    try {
      return duration.toNanos();
    } catch (ArithmeticException tooBig) {
      return duration.isNegative() ? Long.MIN_VALUE : Long.MAX_VALUE;
    }
  }

        try {
            jobHelper.register((ScheduledJob) null);
            fail("Should throw ScheduledJobException");
        } catch (ScheduledJobException e) {
            assertEquals("scheduledJob parameter is null. Cannot register a null job.", e.getMessage());
        } catch (Exception e) {
            // Expected due to missing dependencies in test environment
            assertTrue(true);
        }
    }