Deconstructing the Debate: Is BSD's kqueue Technical Debt in the Modern I/O Landscape?
[Technical Overview] The heart of the debate centers on whether BSD’s kqueue, an event notification mechanism, constitutes “technical debt.” Technical debt, as defined by Wikipedia, is the implied cost of future rework due to choosing an expedient solution over a better, long-term design. Critics argue that kqueue’s design, specifically its perceived lack of composability, hinders its adaptability to evolving I/O demands. Proponents, however, emphasize kqueue’s proven track record and stability in high-performance environments, particularly within the FreeBSD ecosystem widely used for networking servers....