PDX Women Coders hosts a back-end and systems study session working through Designing Data-Intensive Applications, second edition, by Martin Kleppmann. This session covers Chapter 1. The group reads roughly one chapter per session and meets every two weeks, planning to finish the book over seven to eight months. Discussions cover the core concepts of distributed systems, data storage, reliability, scalability, and the maintainable architecture that comes up in real back-end work. Attendees are encouraged to read Chapter 1 beforehand, but reading is not required to join and follow along. The session runs on Zoom at 10:00 AM Pacific, and the Zoom link is shared with registered attendees two to three days before the meeting. The series was created and organized by Kat K. and has previously worked through the first edition of the book. Anyone is welcome to attend regardless of gender as long as they support the mission of the group.