DevOps Daily Newsletter - Week 24, 2026

Happy Sunday folks, here is everything we shipped this week to keep your stack sharp.

Blog Posts

Shai-Hulud Reaches PyPI: The Hades Wave That Runs Before You Import It

The Shai-Hulud worm jumped to PyPI on June 7, hiding in 19 Python packages that run before you even import them. We break down the Hades wave and what to check in your dependencies right now.

Is Valkey Ready to Replace Redis in 2026?

Valkey has grown up fast since forking off Redis after the 2024 license change. We look at whether it is ready to take over your production cache in 2026.

OpenTofu in 2026: Should You Switch from Terraform (and What It Actually Costs You)

OpenTofu is a real Terraform alternative now, but switching is not free. Here is exactly what the fork gives you and what it actually costs to move.

Zero-Downtime Database Migrations for PostgreSQL in Production

One careless ALTER TABLE can freeze a busy PostgreSQL database for minutes. This post shows why it happens and how to ship the change without anyone noticing.

News Digests

DevOps Weekly Digest - Week 23, 2026

Your curated roundup from Kubernetes, cloud native tooling, CI/CD, IaC, observability, and security. The week's signal without the noise.

Comparisons

Terraform vs OpenTofu

Terraform or OpenTofu in 2026? We line up licensing, governance, and state encryption so you can pick with confidence.

Valkey vs Redis

Valkey vs Redis comes down to more than the BSD and AGPL license split. We compare performance and built-in modules to help you choose.

New Relic vs Datadog

New Relic and Datadog go head to head on pricing and full-stack observability. See which one fits your team and budget.

Checklists

Zero-Downtime PostgreSQL Migrations in Production

A step-by-step checklist for changing a live PostgreSQL schema using the expand-and-contract pattern. Keep the app up while you migrate.

Guides

Introduction to AWS

Learn AWS step by step by building a real cloud application. Covers IAM, EC2, S3, VPC, RDS, load balancing, and more.

Quizzes

Rate Limiting for APIs Quiz

Think you could design API rate limiting under pressure? Test yourself on token bucket, leaky bucket, and fixed window approaches.

Flashcards

Secrets Management with HashiCorp Vault

Quick flashcards for running HashiCorp Vault in production, covering auth, policies, and static and dynamic secrets. Drill the basics before your next on-call.

Featured Games

Git Concepts Simulator

Practice Git in an interactive browser terminal with a visual model of your repository. Learn the working directory, staging, and commits by doing.

Cards Against DevOps

Fill in the blanks with the most outrageous DevOps scenarios you can imagine. A ridiculous party game for your next team hangout.

Happy learning, The DevOps Daily Team