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Introduction We’ve all been there. You add spring-boot-starter-security to your project, the app restarts, and suddenly—magic!—you have a login form. But what just happened? For many developers, Spring Security feels like a "black box." You paste som...

I recently migrated my SaaS application PhotoQuest from Supabase Auth to Spring Security 7. The result? ~700 lines of custom auth code eliminated. But the real story isn't the code. It's how two conversations with Claude Code shaped the entire approa...
