Linux, Jenkins, AWS, SRE, Prometheus, Docker, Python, Ansible, Git, Kubernetes, Terraform, OpenStack, SQL, NoSQL, Azure, GCP, DNS, Elastic, Network, Virtualization. DevOps Interview Questions - bre...

A curriculum for Agile and Lean thinking.

Without psychological safety, respect, and trust, none of the following is possible. The way we work, the work we do, and the organizations within which we work are all part of a connected system. You cannot change anything without changing everything. You…

Today at 1651 UTC, we opened an internal incident entitled "Facebook DNS lookup returning SERVFAIL" because we were worried that something was wrong with our DNS resolver 1.1.1.1. But as we were about to post on our public status page we realized something…

Important, Read This First You’re about to read a blog post with a lot of advice. Learning from those who came before us is instrumental to success, but we often forget an important caveat. Almost all advice is contextual, yet it is rarely delivered with…

Many organizations claim to be using continuous delivery. Many of them are wrong. Are you?

He had zero cloud experience ... or did he?

UPDATE 2: Another name for this article could be “Product Teams vs Delivery Teams”.  That’s because since this article was published, I wrote articles describing the difference between product teams vs feature teams, and product teams vs project teams.  And…

Beck overturned conventional programming wisdom. Now, he's looking toward tech's trickier problems.

(Twitter is great.

The forces for architectural alignment vary on domain relationships.

Fingerprint authentication is a convenient alternative to passwords and PIN codes. Who wants to spend time typing in a lengthy string of numbers, letters and characters when a simple tap will suffice? Unfortunately, that convenience comes at a cost. Because…

Forbes's Thomas Brewster wanted to know just how secure facial recognition technology is today and how easy it would be to trick the system. With 3D printed head in hand, it's a pretty easy feat.

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In order to keep backwards compatibility, you can weaken preconditions or strengthen postconditions.