If someone steals your password, they can pretend to be you. That's why many companies provide two-factor or multi-factor authentication via a fingerprint scan, a YubiKey, an authenticator app, or SMS. In this article, Petr Hlavicka will give you a solid foundation of knowledge about multi-factor authentication and will walk you through implementation with Rails, Webauthn, and Devise

Apart from being a synonym to a sandal, a ruby flip-flop refers to a system that comprises two alternating (on/off) states that one can switch between. This can be pretty helpful when you want to loop through arrays and capture contiguous subsets that lie between specific bounds (you’ll understand more of what I mean as you read along). However, not many programming languages have leveraged a mechanism like this.

In my previous blog post, CodeZero 101, I shared with you Part 1 of a four-part series directed at introducing you to the CodeZero platform and some of its useful tools and features for Kubernetes developers. While Part 1 focused on laying a technology foundation, this second post gets into CodeZero itself, and introduces two incredibly handy features called Teleport and Intercept. Teleport allows developers to develop and debug their code locally as though they are inside the cluster.

Production debugging in its current form is a relatively new area of technology that aims to make it easier for developers to solve problems in their code. More often than not, we don’t have all the information we need to solve those hard to reproduce bugs. This leads to long hours of debugging, adding more log lines, and creating separate reproduction environments to try to isolate and reproduce problems.

We’d just want to let you know that your builds running on Linux are now faster. And that this is included in your plan, so you don’t have to do anything, just enjoy the ride or read the details.