Architecture and operational guidance for building authentication systems that limit damage, detect compromise, and recover cleanly.
Software, security, systems, music.
Robert Ryan Jennings
Web logs of a software development engineer, musician, artist and hockey player.
Essays on software engineering, mobile and backend security, architecture, older systems, and the occasional adjacent obsession.
Content expressed is my own and does not reflect the opinions of any entity.
Featured Essay
Designing Secure Authentication Systems
Browse the Archive
Explore by Topic
Popular Categories
all categoriesLatest Entries
Recent Writing
Quiet Presence: A Personal Reason for Building a Controlled Booking System
Mar 20, 2026 12:00AM
18 min read
3808 words
Why I built Quiet Presence, and how I used a small Cloudflare stack plus AI-assisted development to create a provider-controlled booking system with clear client preferences.
Why I Built Entrobert Music
Mar 20, 2026 12:00AM
7 min read
1369 words
Why I built entrobertmusic.com as a music side hustle: to get more rehearsal and session-player experience, use more creative ideas, and open the door to audio software collaboration.