Wenn Sie eine FastAPI-Anwendung verwenden und ein Serverprogramm wie Uvicorn verwenden, kann **ein einzelner Prozess** mehrere Clients gleichzeitig bedienen.

In vielen Fällen möchten Sie jedoch mehrere Prozesse gleichzeitig ausführen.

### Mehrere Prozesse – Worker

### Required, can be `None` { #required-can-be-none }

You can declare that a parameter can accept `None`, but that it's still required. This would force clients to send a value, even if the value is `None`.

To do that, you can declare that `None` is a valid type but simply do not declare a default value:

### Client Binaries

filename | sha512 hash
-------- | -----------
[kubernetes-client-darwin-amd64.tar.gz](https://dl.k8s.io/v1.25.16/kubernetes-client-darwin-amd64.tar.gz) | 3ed350e314cc287afa5f985b2f350948c6a2b38250d6cda78d5638833f3d2c20ed434a6eef014d1ce8bed9b3fe6f5be1e6a3f0d9b1fb20ba195f5b686b6610a3

[kubernetes-client-linux-386.tar.gz](https://storage.googleapis.com/kubernetes-release/release/v1.3.10/kubernetes-client-linux-386.tar.gz) | `06d478c601b1d4aa1fc539e9120adbcbbd2fb370d062516f84a064e465d8eadc`

### Client Binaries

filename | sha512 hash
-------- | -----------
[kubernetes-client-darwin-amd64.tar.gz](https://dl.k8s.io/v1.20.15/kubernetes-client-darwin-amd64.tar.gz) | d7a844366586ca9723515a738ed6a3680e9511e79887511ab9e86bd7963a66e82e5a85997bc269579520f8f9953b8813061f64fec27d165b6e2bd98aa21e13c2

### Client Binaries

filename | sha512 hash
-------- | -----------
[kubernetes-client-darwin-amd64.tar.gz](https://dl.k8s.io/v1.24.17/kubernetes-client-darwin-amd64.tar.gz) | 09374af750a0bbc839844a9e70ac3e8f7572dfd4fbb10c13a3b13d6ff2012790afb0b92dac2bf52882fe822ae3de7c4d65a0b64f17c74ca1d12c88657fed3f7b

  - [Downloads for v1.14.10](#downloads-for-v11410)
    - [Client Binaries](#client-binaries)
    - [Server Binaries](#server-binaries)
    - [Node Binaries](#node-binaries)
  - [Changelog since v1.14.9](#changelog-since-v1149)
    - [Other notable changes](#other-notable-changes)
- [v1.14.9](#v1149)
  - [Downloads for v1.14.9](#downloads-for-v1149)
    - [Client Binaries](#client-binaries-1)
    - [Server Binaries](#server-binaries-1)

* Add a **JSON Schema** for the response, in the OpenAPI *path operation*.
    * This will be used by the **automatic docs**.
    * It will also be used by automatic client code generation tools.

But most importantly:

// The limit is set to allow for bursty behavior,
// but prevent requests to overload the server completely.
// Rejected clients are expected to retry.
const lockMutexWaitLimit = 1000

// lockRequesterInfo stores various info from the client for each lock that is requested.
type lockRequesterInfo struct {
	Name            string // name of the resource lock was requested for

But in many cases, you will want to run several worker processes at the same time.

### Multiple Processes - Workers { #multiple-processes-workers }