> If the fork design is so bad I don't understand why the most popular web > servers (Apache and Nginx) use the pre-fork worker model, or allow its use.
Well the article argues that `fork` prevents portability and hinders progress in the OS design space. Maybe Apache and Nginx support it because it works best for Python and co, maybe they have some benchmarks that look good with it. Either way, there is no contraction here.
