DevOps Daily Newsletter - Week 43, 2026

Hey there, here's a fresh batch of posts, games and guides to start your week.

Blog Posts

Postgres 19 Slipped to November: Every Pulled Feature and Why

PostgreSQL 19 now ships on 19 November, and 13 items were cut from its release notes after beta 1, so here is what got pulled and why.

Let's Encrypt Goes to 64-Day Certificates: When Does Your ACME Client Actually Renew?

On 10 February 2027 Let's Encrypt moves to 64-day certificates and staging already gives you a preview, so it's worth checking when your ACME client actually kicks off a renewal.

DORA Metrics From Git History: The Definition Picks Your Tier

We ran the four DORA metrics over a full year of git history and found that the definition you pick largely decides which performance tier you land in.

Page, Ticket or Ignore: Is the Cheap Model Good Enough for Alert Triage?

Six models and two model routers on DigitalOcean Serverless Inference got the same written on-call policy and had to sort alerts into page, ticket or ignore, and the results show whether the cheap option holds up.

DevOps Interviews Now Test How You Decide. How to Practice Situational Questions

Fewer interviewers ask what a Kubernetes Service is and more describe a broken system and ask what you would do, so here is how to practice for that style of question.

Ubuntu 26.10 Moves cp, mv and rm to Rust. We Ran 162 Shell Commands Through GNU and uutils to See What Changes

Rust coreutils now power every tool in Ubuntu 26.10, and running 162 shell commands through GNU and uutils side by side shows exactly which ones behave differently.

Datadog Alternatives in 2026: 12 Tools, Their Real Prices, and What 300 GB of Logs Costs on Each

We read Datadog's pricing page and those of 12 alternatives on the same day, then priced one workload on each to see what you would really pay.

How YouTube, Slack and GitHub Shard MySQL: We Built the Vitess Pattern on Five Servers and Measured What It Costs

YouTube built Vitess and Slack and GitHub run their largest MySQL workloads on it, so we rebuilt the same sharding pattern on five servers and measured what it costs.

DigitalOcean Agent Droplets: When the $50 Plan Pays Off

It's a prepaid discount on DigitalOcean Managed Agents, not a server, and pricing our real usage shows where the $50 plan starts to save you money.

Featured Games

DevOps Scorecard

Rate yourself across 8 key areas of DevOps and walk away with a shareable scorecard that shows where you're strong and where to focus next.

Container Security Challenge

Each of these six real docker run commands hides a flag that hands an attacker the host, and your job is to click the dangerous one before it does.

News Digests

DevOps Weekly Digest - Week 42, 2026

A curated roundup of updates from Kubernetes, cloud native tooling, CI/CD, IaC, observability and security, all in one quick read.

Comparisons

Bitbucket Pipelines vs GitHub Actions

A side-by-side look at the two CI/CD platforms covering YAML syntax, runner types and more, so you can pick the right fit for your team.

Guides

Cryptography Essentials

Get solid on symmetric and asymmetric encryption and the other crypto basics that come up constantly in day-to-day DevOps work.

Quizzes

Ansible Configuration Management Quiz

Put your knowledge of playbooks, roles, inventory management and real automation scenarios to the test.

Flashcards

Linux Fundamentals

Quick-fire cards on the file system hierarchy, process management, permissions and common commands to keep your basics sharp.

Happy learning, The DevOps Daily Team