Andrew Morton, the 66‑year‑old maintainer of Linux's memory‑management subsystem that powers billions of devices, announced his retirement, leaving the community to confront a critical bus‑factor problem and the daunting task of finding a successor for one of the kernel's most complex components.
The article recounts a developer’s successful rewrite of a Python/Flask API gateway in Go that delivered ten‑fold throughput, one‑third memory usage, and seconds‑level deployment, but caused no user‑visible latency gain, created a single point of failure, and sparked a broader discussion on technical decisions, business value, and team bus factor.
The article examines how open‑source projects cope when founders die or disappear, discussing copyright inheritance, contributor licence agreements, community governance models, the "bus factor" risk, and practical solutions such as designated successors on platforms like GitHub and GitLab.
The article explains how PHP’s alarmingly low bus factor of two sparked the creation of the PHP Foundation, detailing the key contributors, the backing companies, funding goals, and how the foundation aims to raise the bus factor and sustain core development.
