https://marqcode.com/blog Notes on building custom software, AI integrations, and automation. en-us https://marqcode.com/blog/what-i-learned-building-a-lake-house-booking-system https://marqcode.com/blog/what-i-learned-building-a-lake-house-booking-system Sat, 17 Oct 2026 00:00:00 GMT A modular monolith, a Postgres exclusion constraint, an RLS leak, and two paths to the same reservation: lessons from building Brookes Bayou.