# Deployments Concepts { #deployments-concepts }

When deploying a **FastAPI** application, or actually, any type of web API, there are several concepts that you probably care about, and using them you can find the **most appropriate** way to **deploy your application**.

Some of the important concepts are:

* Security - HTTPS
* Running on startup
* Restarts
* Replication (the number of processes running)
* Memory
* Previous steps before starting

		<fileSet>
			<directory>${project.build.directory}/tomcat-lib</directory>
			<outputDirectory>fess-${project.version}/lib/classes</outputDirectory>
		</fileSet>
		<fileSet>
			<directory>${project.build.directory}/fess/WEB-INF/classes/org/codelibs/fess/</directory>
			<includes>
				<include>FessBoot**</include>
				<include>tomcat/**</include>
			</includes>

///

## Custom Headers { #custom-headers }

Keep in mind that custom proprietary headers can be added [using the `X-` prefix](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

// Standard path where an app would find cross domain policy information.
const crossDomainXMLEntity = "/crossdomain.xml"

// A cross-domain policy file is an XML document that grants a web client, such as Adobe Flash Player
// or Adobe Acrobat (though not necessarily limited to these), permission to handle data across domains.
// When clients request content hosted on a particular source domain and that content make requests

AccessKey: MVPSPBW4NP2CMV1W3TXD
SecretKey: X3RKxEeFOI8InuNWoPsbG+XEVoaJVCqbvxe+PTOa
...
...
```

Instance is now accessible on the host at port 9000, proceed to access the Web browser at <http://127.0.0.1:9000/>

## Explore Further

- [MinIO Erasure Code Overview](https://docs.min.io/community/minio-object-store/operations/concepts/erasure-coding.html)

如果你要开发一个用于终端的 <abbr title="Command Line Interface - 命令行界面">命令行</abbr>应用而不是 Web API，看看 [**Typer**](https://typer.tiangolo.com/)。

**Typer** 是 FastAPI 的小同胞。它的目标是成为**命令行中的 FastAPI**。⌨️ 🚀

## 依赖 { #requirements }

FastAPI 站在巨人的肩膀之上：

* [Starlette](https://www.starlette.dev/) 负责 Web 部分。
* [Pydantic](https://docs.pydantic.dev/) 负责数据部分。

## 安装 { #installation }

    @Test
    public void test_execute_success() {
        // Create necessary directories in temp dir
        new File(tempDir, "WEB-INF/lib").mkdirs();
        new File(tempDir, "WEB-INF/env/thumbnail/lib").mkdirs();
        new File(tempDir, "WEB-INF/plugin").mkdirs();

        thumbnailJob.numOfThreads(2);

        testProcessHelper.exitValue = 0;

MockWebServer
=============

A scriptable web server for testing HTTP clients


### Motivation

This library makes it easy to test that your app Does The Right Thing when it
makes HTTP and HTTPS calls. It lets you specify which responses to return and
then verify that requests were made as expected.

Because it exercises your full HTTP stack, you can be confident that you're

import org.codelibs.fess.util.ComponentUtil;
import org.lastaflute.web.util.LaRequestUtil;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * Base search form class that extends SearchRequestParams.
 * Provides form fields and methods for handling search requests in the web interface.

# 部署概念 { #deployments-concepts }

當你要部署一個 FastAPI 應用，或其實任何類型的 Web API 時，有幾個你可能在意的概念。掌握這些概念後，你就能找出最適合部署你應用的方式。

一些重要的概念包括：

- 安全性 - HTTPS
- 開機自動執行
- 重新啟動
- 複本（執行中的行程數量）
- 記憶體
- 啟動前的前置步驟

我們將看看它們如何影響部署。

最終目標是能夠以安全、避免中斷，並盡可能高效使用運算資源（例如遠端伺服器／虛擬機）的方式來服務你的 API 用戶端。🚀

我會在這裡多介紹一些這些觀念，希望能幫你建立必要的直覺，讓你能在非常不同、甚至尚未出現的未來環境中決定要如何部署你的 API。

在思考這些概念之後，你將能夠評估與設計最適合部署你自己 API 的方式。

在接下來的章節，我會提供更具體的部署 FastAPI 應用的食譜。