transformations deterministic. The option will now apply the same across
        all transformations.
    *   The optimization `parallel_batch` now becomes default if not disabled by
        users, which will parallelize copying of batch elements.
    *   Added the ability for `TensorSliceDataset` to identify and handle inputs
        that are files. This enables creating hermetic SavedModels when using
        datasets created from files.

This idea of **asynchronous** code described above is also sometimes called **"concurrency"**. It is different from **"parallelism"**.

**Concurrency** and **parallelism** both relate to "different things happening more or less at the same time".

But the details between *concurrency* and *parallelism* are quite different.

To see the difference, imagine the following story about burgers:

### Parallele Hamburger { #parallel-burgers }

Stellen wir uns jetzt vor, dass es sich hierbei nicht um „nebenläufige Hamburger“, sondern um „parallele Hamburger“ handelt.

Sie gehen los mit Ihrem Schwarm, um paralleles Fast Food zu bekommen.

* l’en-tête transféré

* le système d’injection de dépendances
* la dépendance
* l’élément dépendable
* le dépendant

* lié aux E/S
* lié au processeur
* concurrence
* parallélisme
* multi-traitement

* la variable d’env
* la variable d’environnement
* le `PATH`
* la variable `PATH`

* l’authentification
* le fournisseur d’authentification
* l’autorisation

- shutdown: вимкнення
- lifespan: тривалість життя
- authorization: авторизація
- forwarded header: направлений заголовок
- dependable: залежний
- dependent: залежний
- bound: межа
- concurrency: рівночасність
- parallelism: паралелізм
- multiprocessing: багатопроцесорність
- env var: змінна оточення
- dict: словник
- enum: перелік
- issue: проблема
- server worker: серверний працівник
- worker: працівник

### Eşzamanlılık ve Burgerler { #concurrency-and-burgers }

Yukarıda anlatılan **asenkron** kod fikrine bazen **"eşzamanlılık"** (concurrency) da denir. **"Paralellik"**ten (parallelism) farklıdır.

**Eşzamanlılık** ve **paralellik**, "aynı anda az çok birden fazla şeyin olması" ile ilgilidir.

Ama *eşzamanlılık* ve *paralellik* arasındaki ayrıntılar oldukça farklıdır.

# 並行與 async / await { #concurrency-and-async-await }

有關*路徑操作函式*的 `async def` 語法的細節與非同步 (asynchronous) 程式碼、並行 (concurrency) 與平行 (parallelism) 的一些背景知識。

## 趕時間嗎? { #in-a-hurry }

<abbr title="too long; didn't read - 太長不看"><strong>TL;DR:</strong></abbr>

如果你正在使用要求你以 `await` 語法呼叫的第三方函式庫，例如：

```Python
results = await some_library()
```

然後，使用 `async def` 宣告你的*路徑操作函式*：


```Python hl_lines="2"
@app.get('/')

### Конкурентность лучше параллелизма? { #is-concurrency-better-than-parallelism }

Нет! Мораль истории не в этом.

* authorization header
* `Authorization` header
* forwarded header

* dependency injection system
* dependency
* dependable
* dependant

* I/O bound
* CPU bound
* concurrency
* parallelism
* multiprocessing

* env var
* environment variable
* `PATH`
* `PATH` variable

* authentication
* authentication provider
* authorization
* authorization form

    /**
     * ProjectBuilder parallelism.
     *
     * @since 4.0.0
     */
    @Config(type = "java.lang.Integer", defaultValue = "cores/2 + 1")
    public static final String MAVEN_MODEL_BUILDER_PARALLELISM = "maven.modelBuilder.parallelism";

    /**
     * User property for enabling/disabling the consumer POM feature.
     *