Projects

Every project links to its code, and deployed ones link to the live app so you can try it.

Featured

relay-authz

Authorization service

A relationship-based authorization service modeled on Google's Zanzibar paper. It answers "can this user do this?" by walking nested groups and folders in PostgreSQL, and "what can this user access?" in 7 queries instead of 45,760. Revision tokens keep revoked access out of the Redis cache.

Notes & limits

Google's production system stores trillions of tuples in Spanner, replicated across data centers, and caches shared subproblems. This runs on a single database with no sharding or replication, and caches only whole checks.

GitHub ↗

Go · PostgreSQL · Redis · Docker · k6

Layerup

AI stylist web app

Tell it your plans and it builds an outfit from photos of your own clothes, layered for the hours you'll be outside. Try it with the one-click guest demo.

Notes & limits

Runs on free tiers, with failover to a second model when Gemini is overloaded. Background removal runs in the browser, so the first upload downloads a 91 MB model.

Live ↗GitHub ↗

Next.js · TypeScript · Supabase · Gemini · ONNX Runtime · Vercel

More projects

prof-search

Search engine

Searches 46k UMD professor reviews by meaning. Hybrid search plus a cross-encoder reranker raised nDCG@10 from 0.51 (keyword) to 0.74 on 60 graded queries, and fixed negation like "not much homework".

GitHub ↗

Python · FastAPI · PostgreSQL · pgvector · ONNX · k6