How to Configure Windows Sandbox Local Traefik Compress Middleware via XML in Windows 11

Verifying transparent HTTP payload compression at the reverse proxy layer is essential for minimising network bandwidth without taxing application backend processes. Windows Sandbox in Windows 11 provides a secure, self-contained Hyper-V container ideal for validating Traefik gzip and zstd compression middleware configurations prior to staging deployment.

Benefits of Traefik Compression Middleware

Traefik’s Compress middleware inspects client Accept-Encoding headers and dynamically applies gzip, deflate, or Brotli/zstd compression to responses meeting configured MIME-type criteria. Testing this inside a sandbox isolates performance benchmarking from the host system’s network adapter.

Authoring the Windows Sandbox WSB XML

Save the following XML document as TraefikCompressSandbox.wsb on your Windows 11 PC:

<Configuration>
  <VGpu>Default</VGpu>
  <Networking>Default</Networking>
  <MappedFolders>
    <MappedFolder>
      <HostFolder>C:\TraefikCompressLab</HostFolder>
      <SandboxFolder>C:\TraefikCompressLab</SandboxFolder>
      <ReadOnly>true</ReadOnly>
    </MappedFolder>
  </MappedFolders>
  <LogonCommand>
    <Command>powershell.exe -ExecutionPolicy Bypass -NoExit -File C:\TraefikCompressLab\setup-compress.ps1</Command>
  </LogonCommand>
</Configuration>

PowerShell Deployment Script

Create the bootstrapping script at C:TraefikCompressLabsetup-compress.ps1:

Write-Host "Configuring Traefik Compression Sandbox..." -ForegroundColor Cyan

$Dir = "C:Traefik"
New-Item -ItemType Directory -Force -Path $Dir | Out-Null

$ZipUrl = "https://github.com/traefik/traefik/releases/download/v3.0.0/traefik_v3.0.0_windows_amd64.zip"
Invoke-WebRequest -Uri $ZipUrl -OutFile "$Dir	raefik.zip"
Expand-Archive -Path "$Dir	raefik.zip" -DestinationPath $Dir -Force

$Config = @"
http:
  middlewares:
    gzip-compress:
      compress:
        minResponseBodyBytes: 1024
        encodings:
          - "gzip"
          - "deflate"
  routers:
    api-router:
      rule: "PathPrefix(`/data`)"
      middlewares:
        - "gzip-compress"
      service: "data-service"
  services:
    data-service:
      loadBalancer:
        servers:
          - url: "http://127.0.0.1:8080"
"@

Set-Content -Path "$Dirdynamic_conf.yml" -Value $Config
Write-Host "Traefik Compress Middleware Configured Successfully." -ForegroundColor Green

Testing Compression Payloads

Launch the sandbox and execute requests using curl.exe -H "Accept-Encoding: gzip" -I http://127.0.0.1/data. Confirm the presence of Content-Encoding: gzip in the returned headers. When finished, closing the sandbox automatically wipes all files and system changes.