The challenges of working out how many CPUs your program can use on Linux

Background of Linux's "file-max" and "nr_open" limits on file descriptors (2021)

"Out of Band" network management is not trivial

Plaintext is not a great format for (system) logs

Understanding a Python Closure Oddity

Security is not part of most people's jobs

Go's 'range over functions' iterators and avoiding iteration errors

It seems routine to see a bunch of browser User-Agents from the same IP

HTTP/3 needs us (and other people) to make firewall changes (2021)

PyPy has been working for me for several years now