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CDN

STACKIT Content Delivery Network (CDN) extends STACKIT Cloud to deliver content and data quickly, reliably, and securely. By integrating a powerful Web Application Firewall (CDN WAF) directly into our global edge network, STACKIT CDN ensures your content is available worldwide with low latency and high bandwidth, while simultaneously protecting your applications from web-based threats.

  • feature

    Token-based log sink authentication and advanced cache key controls

    Section titled “Token-based log sink authentication and advanced cache key controls”

    This release adds a new OTLP log sink configuration which supports Bearer token authentication and introduces granular URL query string and request header cache key variations (Vary cache).

    • What’s new: Support for the new OTLP log sink configuration, supporting Basic authentication and Bearer token options. The connection validation logic and log streaming engine can now utilize authorization tokens during transport.
    • What it brings: Enhanced security and seamless integration with OpenTelemetry (OTel)-compatible log collectors and STACKIT telemetry services without exchanging static username/password credentials.
    • How to use it: Configure the token credential field within the OTLP log sink settings via the STACKIT CDN API.

    Cache key Vary controls (query strings and request headers)

    Section titled “Cache key Vary controls (query strings and request headers)”
    • What’s new: Granular control plane configurations to enable or disable URL query string parameter inclusion in cache keys and to define custom arrays of HTTP request headers for Vary cache evaluation.
    • What it brings: Targeted caching performance for dynamic applications, versioned API endpoints, and multi-language sites by serving localized or header-specific content directly from edge nodes without cache collisions.
    • How to use it: Set the query string caching toggle and pass the array of cache key headers via the STACKIT CDN API endpoint under your distribution configuration.

    These features are currently available via the API and SDK. Support for Terraform and the Portal will be added in a future update.

  • feature

    This release introduces more granular control over the headers and security protocols of your distribution.

    • Strip response cookies: Enable the stripResponseCookies flag to remove Set-Cookie headers from origin responses. This prevents sensitive session data from leaking via the CDN, which is ideal for static content distributions.
    • Request Host header forwarding: Use the forwardHostHeader feature to pass the original client Host header through to your origin.
    • TLS 1.0 and 1.1 controls: Support for TLS 1.0 and 1.1 is now disabled by default to ensure high security. You can now explicitly enable these versions in your configuration if legacy clients must be supported.

    These features are currently available via the API and SDK. Support for Terraform and the Portal will be added in a future update.

  • announcement

    Image Optimizer is now available in STACKIT Content Delivery Network (CDN)

    Section titled “Image Optimizer is now available in STACKIT Content Delivery Network (CDN)”

    The STACKIT CDN Image Optimizer enhances your loading times and reduces bandwidth consumption automatically—without any manual code adjustments. The feature is now available via the Portal, API, and Terraform Provider.

    Highlights:

    • WebP conversion: Automatically uses efficient image formats for faster loading times with no loss in quality.
    • Smart resizing: Images are optimized to fit the user’s specific device.
    • Dynamic image API: Real-time image transformations directly via URL.
    • Code minification: JS and CSS files are automatically compressed to accelerate delivery.

    Image Optimizer is pre-configured to guarantee the perfect balance between performance and image quality.

    If you have any questions, feel free to contact us via support ticket.