if err != nil {
		t.Fatalf("Failed to marshal versioning config: %v", err)
	}

	bucket := "bucket"
	obj := "obj-1"
	now := time.Now()
	meta := BucketMetadata{
		Name:                      bucket,
		Created:                   now,
		LifecycleConfigXML:        lcXML,
		VersioningConfigXML:       vcfgXML,
		VersioningConfigUpdatedAt: now,
		LifecycleConfigUpdatedAt:  now,
		lifecycleConfig:           &lc,

META-INF/MANIFEST.MF Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Created-By: Apache Maven Built-By: BEBE Build-Jdk: 1.6.0_07 META-INF/maven/plugin.xml A test plugin to assist testing of Maven core. org.apache.maven.plugins maven-resources-plugin 0.1 resources false true testResources Does nothing. false true false false false true org.apache.maven.plugin.coreit.TestMojo java per-lookup once-per-session resources Does nothing. false true false false false true org.apache.maven.plugin.coreit.ItMojo...

META-INF/MANIFEST.MF Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Created-By: Apache Maven Built-By: BEBE Build-Jdk: 1.6.0_07 META-INF/maven/plugin.xml A test plugin to assist testing of Maven core. org.apache.maven.plugins maven-compiler-plugin 0.1 compiler false true testCompile Does nothing. test false true false false false true org.apache.maven.plugin.coreit.TestMojo java per-lookup once-per-session compile Does nothing. compile false true false false false true org.apache.mav...

META-INF/MANIFEST.MF Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Created-By: Apache Maven Built-By: BEBE Build-Jdk: 1.6.0_07 META-INF/maven/plugin.xml A test plugin to assist testing of Maven core. org.apache.maven.plugins maven-plugin-plugin 0.1 plugin false true addPluginArtifactMet Does nothing. false true false false false true org.apache.maven.plugin.coreit.TestMojo java per-lookup once-per-session descriptor Does nothing. false true false false false true org.apache.maven.plugin.coreit.ItMojo...

	defer EventTotals.With(eventTypeTag.Value(event.Event.String())).Increment()

	switch event.Event {
	case controllers.EventAdd:
		// pod was added to our cache
		// we get here in 2 cases:
		// 1. new pod was created on our node
		// 2. we were restarted and current existing pods are added to our cache

		// We have no good way to distinguish between these two cases from here. But we don't need to!

    ```

    </div>

!!! note
    The command `uvicorn main:app` refers to:

    * `main`: the file `main.py` (the Python "module").
    * `app`: the object created inside of `main.py` with the line `app = FastAPI()`.

    It is equivalent to:

    ```Python
    from main import app
    ```

!!! warning

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## WebSockets client

### In production

In your production system, you probably have a frontend created with a modern framework like React, Vue.js or Angular.

And to communicate using WebSockets with your backend you would probably use your frontend's utilities.