FastAPI's Depends() handles per-request wiring. dependency-injector handles everything else — configuration, singletons, factories, and a declarative container that makes your entire object graph visible in one file.
15 min readYour BookStore API now has 200 customers who each want their own data. One missing WHERE clause leaks tenant data and kills the company. Here is how to make cross-tenant data leakage structurally impossible with context propagation, session events, and row-level isolation.
13 min readHardcoded config breaks the moment your 200 tenants need different rate limits, feature access, and API keys. Here is a hierarchical configuration system with per-tenant overrides, percentage-based feature rollouts, and encrypted secrets — all hot-reloadable without restarts.
14 min readMost Astro tutorials stop at pnpm create astro. By the time you need TypeScript strict mode, Tailwind 4, and a Cloudflare deployment pipeline enforcing Lighthouse 100, you are patching together Stack Overflow answers. This post gets you production-ready from the first command.
12 min readEvery client:load directive you add ships JavaScript to every reader. Most of them do not need it. The difference between Lighthouse 100 and 85 is understanding which components need interactivity and choosing the right hydration strategy for each.
14 min readYour blog has 50 posts and a typo in one date field blows up the whole page. Content Collections catch schema violations at build time — before your readers do. This post covers the Content Layer API, Zod schemas, dynamic routes, and image validation.
12 min readYou left the enterprise SDLC — change boards, QA gates, sign-offs — to vibe-code solo with an AI. The safeguards didn't have to follow you, but their jobs did. A field guide mapping each one to its lean ADD equivalent, grounded in two real solo projects.
16 min readA controlled comparison: two AI workflows build the same forty-line function from one spec. GSD records it in five files and 644 lines of prose; ADD in a 22-line contract. Real recovered artifacts and exact token logs show ADD spent 5× fewer tokens with the same passing tests.
14 min readNous Research's Hermes Agent ships a learning loop inside its runtime — act, then a background thread folds lessons into memory and skills. It's the back half of ADD's loop, in code. What that proves, what it's missing, and why the two compose.
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