* parts other than the last may begin with a digit (for example, "3com.com"). It's important to
     * disallow an initial digit in the last part; it's the only thing that stops an IPv4 numeric
     * address like 127.0.0.1 from looking like a valid domain name.
     */

    if (isFinalPart && DIGIT_MATCHER.matches(part.charAt(0))) {
      return false;
    }

    return true;

parseFloat(styles.borderLeftWidth);\n\n  // In cases where the parent is fixed, we must ignore negative scroll in offset calc\n  if(fixedPosition && isHTML) {\n    parentRect.top = Math.max(parentRect.top, 0);\n    parentRect.left = Math.max(parentRect.left, 0);\n  }\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop...

* Any program, any code, **can only do things** when it is being **executed**. So, when there's a **process running**.
* The process can be **terminated** (or "killed") by you, or by the operating system. At that point, it stops running/being executed, and it can **no longer do things**.

由于某种原因，您的 API 的使用量也有可能出现**激增**。 也许它像病毒一样传播开来，或者也许其他一些服务或机器人开始使用它。 在这些情况下，您可能需要额外的资源来保证安全。

您可以将一个**任意数字**设置为目标，例如，资源利用率**在 50% 到 90%** 之间。 重点是，这些可能是您想要衡量和用来调整部署的主要内容。

您可以使用“htop”等简单工具来查看服务器中使用的 CPU 和 RAM 或每个进程使用的数量。 或者您可以使用更复杂的监控工具，这些工具可能分布在服务器等上。


## 回顾

您在这里阅读了一些在决定如何部署应用程序时可能需要牢记的主要概念：

* 安全性 - HTTPS
* 启动时运行
* 重新启动
* 复制（运行的进程数）
* 内存
* 开始前的先前步骤

     * more values and build again.
     *
     * <p><b>Performance note:</b> the returned array is backed by the same array as the builder, so
     * no data is copied as part of this step, but this may occupy more memory than strictly
     * necessary. To copy the data to a right-sized backing array, use {@code .build().trimmed()}.
     */
    public ImmutableDoubleArray build() {

/// tip

If you used <a href="https://github.com/astral-sh/uv" class="external-link" target="_blank">`uv`</a> to create the virtual environment, it already did this for you, you can skip this step. 😎

///

/// tip

Do this **once**, right after you create the virtual environment.

///

<div class="termy">

```console
$ echo "*" > .venv/.gitignore
```

</div>

	b.Write(buf[0:1])
	var cap0 int
	for i := 0; i < 5<<10; i++ {
		b.Write(buf)
		b.Read(buf)
		if i == 0 {
			cap0 = b.Cap()
		}
	}
	cap1 := b.Cap()
	// (*Buffer).grow allows for 2x capacity slop before sliding,
	// so set our error threshold at 3x.
	if cap1 > cap0*3 {
		t.Errorf("buffer cap = %d; too big (grew from %d)", cap1, cap0)
	}
}

func BenchmarkWriteByte(b *testing.B) {
	const n = 4 << 10

Você pode usar ferramentas simples como `htop` para ver a CPU e a RAM usadas no seu servidor ou a quantidade usada por cada processo. Ou você pode usar ferramentas de monitoramento mais complexas, que podem ser distribuídas entre servidores, etc.

## Recapitular

It used custom types in its declarations instead of standard Python types, but it was still a huge step forward.

It also was one of the first frameworks to generate a custom schema declaring the whole API in JSON.

     * parts other than the last may begin with a digit (for example, "3com.com"). It's important to
     * disallow an initial digit in the last part; it's the only thing that stops an IPv4 numeric
     * address like 127.0.0.1 from looking like a valid domain name.
     */

    if (isFinalPart && DIGIT_MATCHER.matches(part.charAt(0))) {
      return false;
    }

    return true;