Part 2 of our OnTheGoRentals dev diary. We tackle the hardest problem in rental systems: preventing double-bookings with JPQL interval queries, and building a secure JWT authentication architecture.
Comparing self-hosted AI to cloud APIs for South African businesses. Real cost analysis with 2026 pricing, infrastructure requirements, POPIA compliance, and when each approach makes sense.
Stop rebuilding authentication in every app. Learn how to build a shared identity layer that handles OAuth, federation, and user management once — so every application in your ecosystem can inherit it. Covers email normalization, token boundaries, and the critical difference between authentication and authorization.
