LinkLoom is the backend for a Swift social app where users paste a link into a post and the server builds a rich preview card with title, description, and thumbnail. The Vapor service runs on a cloud instance with an attached instance role. When a user submits a URL, the preview controller fetches the page with the async HTTP client and scrapes its Open Graph tags. Review how the preview endpoint validates and fetches the submitted URL.

StageLight Studio is a PySide6 desktop app used by venues to preview LED-wall animation packs from outside production agencies. The importer parses .stagepack files, validates raw RGBA frame metadata, then hands frame buffers to a native renderer through cffi so thumbnails can render in the background. Review how untrusted frame payload bytes move from the parser, through the worker, and into the asynchronous preview bridge.

ChartHub is a healthcare SaaS that lets clinicians view patient charts and manage their own account settings. To keep things snappy, it sits behind a reverse-cache layer that stores anything that looks like a static asset. The routing layer is intentionally forgiving about extra path segments so old bookmarked deep-links never 404. Review how dynamic responses are cached and decide whether a logged-in user's private settings page could ever be served to someone else.