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<a href="https://pypi.org/project/fastapi" target="_blank">

    <img src="https://github.com/fastapi/fastapi/workflows/Test/badge.svg?event=push&branch=master" alt="Test">
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<a href="https://pypi.org/project/fastapi" target="_blank">

// Dynamic cluster API.

// Update an existing context with a new set of servers defined in a ServerDef
// proto. Servers can be added to and removed from the list of remote workers
// in the context. A New set of servers identified by the ServerDef must be up
// when the context is updated.
//
// This API is for experimental usage and may be subject to change.

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    public static final String UNSAFE_URL = "unsafe-url";
  }

  /**
   * The HTTP <a href="https://www.w3.org/TR/service-workers/#update-algorithm">{@code
   * Service-Worker}</a> header field name.
   *
   * @since 20.0
   */
  public static final String SERVICE_WORKER = "Service-Worker";
  /** The HTTP {@code TE} header field name. */

Но часто Вам может понадобиться несколько одновременно работающих одинаковых процессов.

### Множество процессов - Воркеры (Workers)

## 🛂 ☁ 🖼 ⏮️ 🐁 - Uvicorn

📤 🛂 ☁ 🖼 👈 🔌 🐁 🏃‍♂ ⏮️ Uvicorn 👨‍🏭, ℹ ⏮️ 📃: [💽 👨‍🏭 - 🐁 ⏮️ Uvicorn](server-workers.md){.internal-link target=_blank}.

👉 🖼 🔜 ⚠ ✴️ ⚠ 🔬 🔛: [📦 ⏮️ 💗 🛠️ & 🎁 💼](#_18).

像 Kubernetes 这样的分布式容器管理系统通常有一些集成的方法来处理**容器的复制**，同时仍然支持传入请求的**负载均衡**。 全部都在**集群级别**。

在这些情况下，你可能希望从头开始构建一个 **Docker 镜像**，如[上面所解释](#dockerfile)的那样，安装依赖项并运行 **单个 Uvicorn 进程**，而不是运行 Gunicorn 和 Uvicorn workers这种。


### 负载均衡器

使用容器时，通常会有一些组件**监听主端口**。 它可能是处理 **HTTPS** 的 **TLS 终止代理** 或一些类似的工具的另一个容器。

由于该组件将接受请求的**负载**并（希望）以**平衡**的方式在worker之间分配该请求，因此它通常也称为**负载均衡器**。

/// tip

		Help:      "Total number of active replication workers",
		Type:      gaugeMetric,
	}
}

func getClusterReplAvgActiveWorkersCountMD() MetricDescription {
	return MetricDescription{
		Namespace: nodeMetricNamespace,
		Subsystem: replicationSubsystem,
		Name:      avgActiveWorkers,
		Help:      "Average number of active replication workers",
		Type:      gaugeMetric,
	}
}

Aqui estão algumas combinações e estratégias possíveis:

* **Uvicorn** com `--workers`
    * Um **gerenciador de processos** Uvicorn escutaria no **IP** e na **porta** e iniciaria **vários processos de trabalho Uvicorn**.
* **Kubernetes** e outros **sistemas de contêineres** distribuídos