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19711

What to Learn

It's common to see people advocate for learning skills that they have or using processes that they use. For example, Steve Yegge has a set of blog posts where he recommends reading compiler books and learning about compilers. His reasoning is basically that, if you understand compilers, you'll see compiler problems…

19721

How to Safely Think in Systems

While there are a decent number of folks out there modeling systems, there’s a much larger group of folks who think of themselves as systems thinkers but utilize techniques like modeling rather casually (a polite way of saying that they don’t use them). Even with modeling tools available, I’ve often taken the shortcut…

19727

How PHP Opcache Works

The opcache PHP extension implements various functionality to speed up PHP in a transparent manner. As the name indicates, its origin and primary purpose is opcode caching, but nowadays it also contains an optimizer and just-in-time compiler. However, this blog post will focus only on the opcode caching aspect.

19728

Tech compensation in 2021

Salaries in tech are going up, and many people are looking for new jobs or reevaluating the ones they have. However, many tech workers have no idea what their labor is worth on the open market. There’s a huge information asymmetry here: employers have access to detailed industry data on salaries, but workers don’t. In…