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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

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

### Concurrent Burgers

You go with your crush to get fast food, you stand in line while the cashier takes the orders from the people in front of you. 😍

<img src="/img/async/concurrent-burgers/concurrent-burgers-01.png" class="illustration">

Then it's your turn, you place your order of 2 very fancy burgers for your crush and you. 🍔🍔

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