practical examples Throughout my software engineer career, I’ve come across some recurrent Python interview questions. I’ve compiled a list of the most interesting (practical/tricky) ones, from which I’ve learned on the spot, so without further ado: Given the following list l = [3,4,6,1,2] will l.sort()==sorted(l) return Trueor False ? The…

We’re experiencing a period in which the speed at which change is adopted, is more relevant than ever. I would always hear my fellow IT friends that the organization in which they are working is not innovative enough or that they don’t even find an innovative organization. Numerous start-ups and…

Cloud adoption is gradually embraced by more and more organizations, due to some obvious benefits (which I will not mention). But what this means for the software engineers…basically it’s a tradeoff between abstraction and the ease with which you can do operations (let’s say). Azure Kubernetes Service upgrade Let’s take…

⚠️ disclaimer: This is a highly opinionated view after c̶o̶m̶p̶l̶e̶t̶e̶l̶y reading Google’s SRE books and having the opportunity to work in an SRE team. Does one care about the service’s reliability? If the answer is yes then, a Site Reliability Engineering culture must be established. At its core, an SRE…

Cloud-Native Application Bundles Recently I’ve started working on a project which is a mix of technologies: Kubernetes, Helm, Istio, Harbour, Docker, and a couple of others. At a first glance, it seemed daunting to manage such a tech stack from an ops perspective…but somewhere in the multitude of readmes, one…

Understanding the differences Monitoring — understand the state of the system, based on gathering predefined sets of metrics or logs. Observability — infer the state of a system, based on exploring properties and patterns not defined in advance. Basically, monitoring relies on capturing and displaying the data providing a restricted…

… in 5 min or less 🕑 As an SRE (and not only) you probably manage or interact with clusters of different sizes…and most probably come across complex issues that need to be debugged and troubleshot. 📚 Some prerequisites are necessary: having OpenshiftCLI client installed having access to the…

Containerization is one of the highest trending buzz words in the tech world from quite a time. The concept of modern containerization originated roughly 15 years ago, back in 2006 when Google began working on Linux control groups that isolated the resource usage of a collection of processes. The…