Julia Evans

How containers work!

When you first start using containers, they seem really weird. Is it a process? A virtual machine? What’s a container image? Why isn’t the networking working? I’m on a Mac but it’s somehow running Linux sort of? And now it’s written a million files to my home directory as root? What’s HAPPENING?

And you’re not wrong. Containers seem weird because they ARE really weird. They’re not just one thing, they’re what you get when you glue together 6 different fea...

2020-04-24 19:34:10 +0000 UTC View Post

Become a SELECT Star!

SQL isn’t like most programming languages. It doesn’t run in the same order you write it! NULL acts in counterintuitive ways! What’s the difference between WHERE and HAVING again?

This zine explains SELECT queries step by step with tons of examples that will show you *exactly* what's happening when you run a query. You'll be able to easily translate your questions about your data into queries and get answers fast.

The zine is 28 pages and you’ll...

2020-01-31 18:17:42 +0000 UTC View Post