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Engineer in Toronto. Notes on systems, from the bits up.

Latest notes

Caches, explainedHow locality turns a slow memory system into a fast one.Virtual memoryWhy every process thinks it owns the machine.Floating pointWhy 0.1 + 0.2 isn't 0.3.

About

Senior engineer working on customer messaging at scale.

Experience

Senior software engineerCustomer messaging platform · 2023–presentSenior frontend engineerPlatform launch and shared UI components · 2021–2023Full stack and web developerPayments, research portals and e-commerce · 2017–2021

Projects

Things I've built, and what they taught me.

Case studies

Reel navigationA wheel-driven nav with springs and detents.This site, v1The first design: a scroll story, a tokens panel and an inspect mode.

Writing

Long-form notes on computer systems.

Notes

The memory hierarchyFrom registers to disk, and how locality decides a program's speed.LinkingHow separate files become one program.Virtual memoryAddress translation, paging, and memory mapping.Concurrent programmingThreads, races, and keeping shared state correct.

Contact

The best ways to reach me.

Elsewhere

GitHubgithub.com/abeprincecEmailabeprincec@gmail.comLinkedInlinkedin.com/in/abrahampr

Writing