and aggregate telemetry data. Istio's control plane provides an abstraction
layer over the underlying cluster management platform, such as Kubernetes.

Istio is composed of these components:

- **Envoy** - Sidecar proxies per microservice to handle ingress/egress traffic
   between services in the cluster and from a service to external

## Separating tests

In a real application, you probably would have your tests in a different file.

And your **FastAPI** application might also be composed of several files/modules, etc.

### **FastAPI** app file

Let's say you have a file structure as described in [Bigger Applications](bigger-applications.md){.internal-link target=_blank}:

```
.
├── app

The API docs use **Swagger UI** and **ReDoc**, and each of those need some JavaScript and CSS files.

By default, those files are served from a <abbr title="Content Delivery Network: A service, normally composed of several servers, that provides static files, like JavaScript and CSS. It's commonly used to serve those files from the server closer to the client, improving performance.">CDN</abbr>.

The `this` of the method invocation `id("plugin")` object is of type link:{javadocPath}/org/gradle/plugin/use/PluginDependenciesSpec.html[`PluginDependenciesSpec`].

The settings file is composed of Gradle API calls built on top of the DSLs.
Gradle executes the script line by line, top to bottom.

Let's take a look at an example and break it down:

====
[.multi-language-sample]
=====

## Components

Istio is composed of six charts in Ambient Mode.  The components are divided between the Control Plane and the Data Plane, and some are Cluster-Scoped, while others can have multiple versions in a single cluster.

// license that can be found in the LICENSE file.

package language

import (
	"sort"
	"strings"
)

// A Builder allows constructing a Tag from individual components.
// Its main user is Compose in the top-level language package.
type Builder struct {
	Tag Tag

	private    string // the x extension
	variants   []string
	extensions []string
}

// Make returns a new Tag from the current settings.

Harshavardhana <******@****.***> 1718255291 -0700

Jinzhu <******@****.***> 1710750526 +0800

Minio Trusted <******@****.***> 1718343603 +0000

Harshavardhana <******@****.***> 1696068836 -0700