if (Thread.currentThread() == this.thread) {
                // we are in the transport thread, ie. on idle disconnecting
                // this is synchronous operation
                // This does not handle compound requests
                synchronized (this.inLock) {
                    final Long peekKey = peekKey();
                    if (peekKey == firstKey) {

# Recipes

We've written some recipes that demonstrate how to solve common problems with OkHttp. Read through them to learn about how everything works together. Cut-and-paste these examples freely; that's what they're for.

### Synchronous Get ([.kt][SynchronousGetKotlin], [.java][SynchronousGetJava])

Download a file, print its headers, and print its response body as a string.

由於大部分的執行時間都消耗在等待 <abbr title="輸入與輸出">I/O</abbr> 操作上，因此這些操作被稱為 "I/O 密集型" 操作。

之所以稱為「非同步」，是因為電腦/程式不需要與那些耗時的任務「同步」，等待任務完成的精確時間，然後才能取得結果並繼續工作。

相反地，非同步系統在任務完成後，可以讓任務稍微等一下（幾微秒），等待電腦/程式完成手頭上的其他工作，然後再回來取得結果繼續進行。

相對於「非同步」（asynchronous），「同步」（synchronous）也常被稱作「順序性」（sequential），因為電腦/程式會依序執行所有步驟，即便這些步驟涉及等待，才會切換到其他任務。

### 並行與漢堡

上述非同步程式碼的概念有時也被稱為「並行」，它不同於「平行」。

並行和平行都與 "不同的事情或多或少同時發生" 有關。

但並行和平行之間的細節是完全不同的。

為了理解差異，請想像以下有關漢堡的故事：

### 並行漢堡

  }

  @Test
  fun networkInterceptorThrowsRuntimeExceptionSynchronous() {
    interceptorThrowsRuntimeExceptionSynchronous(true)
  }

  /**
   * When an interceptor throws an unexpected exception, synchronous callers can catch it and deal
   * with it.
   */
  private fun interceptorThrowsRuntimeExceptionSynchronous(network: Boolean) {
    addInterceptor(network) { chain: Interceptor.Chain? -> throw RuntimeException("boom!") }

can be controlled with the `x509rsacrt` setting. Using `x509rsacrt=0` restores
the Go 1.23 behavior.

### Go 1.23

Go 1.23 changed the channels created by package time to be unbuffered
(synchronous), which makes correct use of the [`Timer.Stop`](/pkg/time/#Timer.Stop)
and [`Timer.Reset`](/pkg/time/#Timer.Reset) method results much easier.
The [`asynctimerchan` setting](/pkg/time/#NewTimer) disables this change.

## Installation

<div class="termy">

```console
$ pip install fastapi

---> 100%
```

</div>

It has an interesting, uncommon feature: using the same framework, it's possible to create APIs and also CLIs.

As it is based on the previous standard for synchronous Python web frameworks (WSGI), it can't handle Websockets and other things, although it still has high performance too.

/// info

     * Returns the final value of the associated {@link ClosingFuture}, or throws an exception as
     * {@link Future#get()} would.
     *
     * <p>Because the asynchronous operation has already completed, this method is synchronous and
     * returns immediately.
     *
     * @throws CancellationException if the computation was cancelled
     * @throws ExecutionException if the computation threw an exception
     */
    @ParametricNullness

     * Returns the final value of the associated {@link ClosingFuture}, or throws an exception as
     * {@link Future#get()} would.
     *
     * <p>Because the asynchronous operation has already completed, this method is synchronous and
     * returns immediately.
     *
     * @throws CancellationException if the computation was cancelled
     * @throws ExecutionException if the computation threw an exception
     */
    @ParametricNullness

* Change default value of deleting-pods-burst to 1 ([#27422](https://github.com/kubernetes/kubernetes/pull/27422), [@gmarek](https://github.com/gmarek))
* A new volume manager was introduced in kubelet that synchronizes volume mount/unmount (and attach/detach, if attach/detach controller is not enabled). ([#26801](https://github.com/kubernetes/kubernetes/pull/26801), [@saad-ali](https://github.com/saad-ali))