DevOps Daily Newsletter - Week 38, 2026

Good morning, here is everything that went up on DevOps Daily over the past week.

Blog Posts

Figma Made Multiplayer Instant by Picking the Dumber Algorithm

Figma skipped Operational Transforms and did not build a real CRDT either. What they shipped instead is simpler than both, and it is the reason multiplayer feels instant.

systemd and NetworkManager Are Trapping AI Agents

systemd and NetworkManager are now planting instructions in their repos so an unreviewed AI contribution gives itself away. Worth a read if you maintain anything that accepts outside pull requests.

Gate Your Terraform Plans: Rules Decide, the Model Explains

A plan that says "3 to add, 1 to change, 1 to destroy" tells reviewers almost nothing, and they approve it anyway. This walks through a setup where rules make the call and the model only has to explain it.

How Netflix Ships a Third of the Internet: The CDN They Had to Build

At its 2015 peak Netflix was 37% of North American downstream traffic, and almost none of it came from a commercial CDN. The story of why they had to build their own is mostly a story about hardware.

In-App, Email and Push From One Event

One order-shipped event, three channels, and a user who wants a badge now, an email later, and no push at all. Here is how to route that without writing the same logic three times.

Meta Says Every Muse User Gets Their Own VM

Meta says its new consumer agent gets a dedicated cloud VM per person, with a second agent keeping watch on the first. We look at what that isolation actually buys you and what it costs to run.

Featured Games

BCDR Simulator

Set your RTO and RPO targets, pick a failover strategy, then find out whether the plan survives contact with an outage. Much better than reading a continuity policy nobody has opened since it was written.

Binary Byte Simulator

Flip eight bits by hand and watch the number move, the way the wooden demonstrators in computing museums do it. A few minutes with this and binary stops being something you have to think about.

Comparisons

Ory vs Keycloak

One is a single Java server that does everything, the other is a set of services you assemble yourself. This goes through what that difference costs you once you are the one running it.

Guides

Introduction to Docker

Containers, images, Dockerfiles, volumes, networking and Compose, starting from nothing. Good to pass along to anyone on your team who has been nodding through Docker conversations.

Quizzes

SLOs, SLIs, and Error Budgets Quiz

Can you pick an indicator that means something, set a target you can defend, and do the error budget math? Quick way to find out where the gaps are.

Flashcards

SLOs, SLIs, and Error Budgets

The same service level material in cards you can run through on your phone. Handy before an interview or a reliability review.

Happy learning, The DevOps Daily Team