How The Guardian migrated from MongoDB to PostgreSQL - Celia C

I've recently started learning about AWS, and have just taken an innovation day to get more familiar with databases. This article sort of ticks both those boxes, and though I don't understand all of it yet, I definitely understand way more than I would have two months ago

40 Years as a Female Programmer, and Still Going! - Celia C

This is just great

Validations are behavior, associations are structure - Igor SF Sensible thoughts on what should and what should not be tested. Written by David Chelimsky, one of the RSpec developers. Very good read.