https://frederikvonsperling.com Notes on systems, architecture, AI workflows and all things frontend related. Mostly a open notebook as part of my earn learning. en Tue, 01 Sep 2026 10:37:00 GMT https://frederikvonsperling.com/posts/a-simple-guide-to-git-worktrees https://frederikvonsperling.com/posts/a-simple-guide-to-git-worktrees Tue, 01 Sep 2026 10:37:00 GMT A simple guide to git worktrees which allow developers to work on multiple tree attached to the same repository https://frederikvonsperling.com/posts/you-can-now-see-the-cost-of-your-claude-session https://frederikvonsperling.com/posts/you-can-now-see-the-cost-of-your-claude-session Sun, 30 Aug 2026 14:44:00 GMT Claude Code's /usage command now shows a total cost line, letting users track token spend per session. This can be useful for forwarding the tokens cost to clients. https://frederikvonsperling.com/posts/generating-open-graph-images-in-next-js-from-a-react-component https://frederikvonsperling.com/posts/generating-open-graph-images-in-next-js-from-a-react-component Thu, 27 Aug 2026 19:34:00 GMT Next.js allows you to generate an Open Graph image using a combination of their file-based metadata and ImageResponse object. This allows you to still serve Open Graph images, when no images are available, from a custom React component