objInfo:         objInfo,
			expectedFlag:    true,
			expectedCode:    304,
		},
		// If-Modified-Since(false)
		{
			name:            "If-None-Match2",
			ifNoneMatch:     "aaa",
			ifModifiedSince: "Sun, 26 Aug 2024 02:01:01 GMT",
			objInfo:         objInfo,
			expectedFlag:    true,
			expectedCode:    304,
		},
		{
			name:            "If-None-Match3",
			ifNoneMatch:     "aaa",

			// 	If-None-Match condition evaluates to false , and;
			//  If-Modified-Since condition evaluates to true ;
			// 	Then Amazon S3 returns the 304 Not Modified response code.
			// 2. If If-Modified-Since condition evaluates to false, The following `ifModifiedSinceHeader` judgment will also return 304

			// If the object ETag matches with the specified ETag.
			writeHeadersPrecondition(w, objInfo)
			w.WriteHeader(http.StatusNotModified)

* **`300`** and above are for "Redirection".  Responses with these status codes may or may not have a body, except for `304`, "Not Modified", which must not have one.
* **`400`** and above are for "Client error" responses. These are the second type you would probably use the most.
    * An example is `404`, for a "Not Found" response.

3.0.5/source/apache-maven-3.0.5-src.tar.gz Apache Maven 3.0.4 2012-01-20 3.0.4 http://archive.apache.org/dist/maven/binaries/apache-maven-3.0.4-bin.zip http://archive.apache.org/dist/maven/binaries/apache-maven-3.0.4-bin.tar.gz http://archive.apache.org/dist/maven/source/apache-maven-3.0.4-src.zip http://archive.apache.org/dist/maven/source/apache-maven-3.0.4-src.tar.gz Apache Maven 3.0.3 2011-03-03 3.0.3 http://archive.apache.org/dist/maven/binaries/apache-maven-3.0.3-bin.zip http://archive.apa...

    * ➕1️⃣ 🖼 🔜 `201`, "✍". ⚫️ 🛎 ⚙️ ⏮️ 🏗 🆕 ⏺ 💽.
    * 🎁 💼 `204`, "🙅‍♂ 🎚". 👉 📨 ⚙️ 🕐❔ 📤 🙅‍♂ 🎚 📨 👩‍💻, & 📨 🔜 🚫 ✔️ 💪.
* **`300`** & 🔛 "❎". 📨 ⏮️ 👫 👔 📟 5️⃣📆 ⚖️ 5️⃣📆 🚫 ✔️ 💪, 🌖 `304`, "🚫 🔀", ❔ 🔜 🚫 ✔️ 1️⃣.
* **`400`** & 🔛 "👩‍💻 ❌" 📨. 👫 🥈 🆎 👆 🔜 🎲 ⚙️ 🏆.
    * 🖼 `404`, "🚫 🔎" 📨.
    * 💊 ❌ ⚪️➡️ 👩‍💻, 👆 💪 ⚙️ `400`.

* **`200`** 及以上的状态码用于表示**成功**。这些状态码是最常用的
    * `200` 是默认状态代码，表示一切**正常**
    * `201` 表示**已创建**，通常在数据库中创建新记录后使用
    * `204` 是一种特殊的例子，表示**无内容**。该响应在没有为客户端返回内容时使用，因此，该响应不能包含响应体
* **`300`** 及以上的状态码用于**重定向**。具有这些状态码的响应不一定包含响应体，但 `304`**未修改**是个例外，该响应不得包含响应体
* **`400`** 及以上的状态码用于表示**客户端错误**。这些可能是第二常用的类型
    * `404`，用于**未找到**响应
    * 对于来自客户端的一般错误，可以只使用 `400`
* `500` 及以上的状态码用于表示服务器端错误。几乎永远不会直接使用这些状态码。应用代码或服务器出现问题时，会自动返回这些状态代码

/// tip | "提示"

*----+------+------+
| <<<maven.version>>> | The version number of the current Maven execution <(since 3.0.4)>. For example, "<<<3.0.5>>>". | <<<$\{maven.version\}>>> |
*----+------+------+
| <<<maven.build.version>>> | The full build version of the current Maven execution <(since 3.0.4)>. For example, "<<<Apache Maven 3.2.2 (r01de14724cdef164cd33c7c8c2fe155faf9602da; 2013-02-19T14:51:28+01:00)>>>". | <<<$\{maven.build.version\}>>> |

* **`300`** und darüber steht für „Redirection“ („Umleitung“).  Responses mit diesen Statuscodes können einen oder keinen Body haben, mit Ausnahme von `304`, „Not Modified“ („Nicht verändert“), welche keinen haben darf.
* **`400`** und darüber stehen für „Client error“-Responses („Client-Fehler“). Auch diese verwenden Sie am häufigsten.

* **`3XX`** – статус-коды, сообщающие о перенаправлениях.  Ответы с этими кодами статуса могут иметь или не иметь тело, за исключением ответов со статусом `304`, "Not Modified", у которых не должно быть тела.
* **`4XX`** – статус-коды, сообщающие о клиентской ошибке. Это ещё одна наиболее часто используемая категория.
    * Пример – код `404` для статуса "Not Found".

* **`300`** e acima são para "Redirecionamento". As respostas com esses códigos de status podem ou não ter um corpo, exceto `304`, "Não modificado", que não deve ter um.
* **`400`** e acima são para respostas de "Erro do cliente". Este é o segundo tipo que você provavelmente mais usaria.
    * Um exemplo é `404`, para uma resposta "Não encontrado".