Pawel Zaras

Reactive programming – transform operations map, flatMap, filter and zip

Leave a Comment / Reactive Programming / By Pawel Zaras

28-10-2021 We continue the series whose main character is reactive programming. For our further deliberations it will be important to repeat some regularities connected with it. As we already know, Reactive Programming is built around stream processing. Data is handled as a stream of data points passing through a pipeline of functions or operators. Each

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What a future Full Stack Developer should know (part 1)

Leave a Comment / Full Stack Developer / By Pawel Zaras

15-10-2021 „Full Stack Developer wanted” is one of the topics, which during the discussion in the world of current, but above all future developers, will not find its end soon. Today about what the role of Full Stack Developer is, and what it entails. A heated payroll The imagination of future Full Stack Developers fires

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Helm – package manager in Kubernetes

Leave a Comment / Helm, Kubernetes / By Pawel Zaras

07-10-2021 Defined as an application package manager in the Kubernetes orchestrator – Helm is, as its creators themselves emphasize, the best way to find, share and use software developed for Kubernetes. What’s worth noting is that Helm allows you to deploy applications in a pretty simple, basically with a single click. This makes things much

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Kubernetes (K8s), as a mature container orchestrator

Leave a Comment / Kubernetes / By Pawel Zaras

16-09-2021 – Kubernetes, also known as K8s, is an open-source system for automating the deployment, scaling, and management of containerized applications – the humble definition of Kubernetes from kubernetes.io doesn’t do justice to its actual role in the container management space today. What was behind its creation, what role does it play today in IT,

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What is reactive programming?

Leave a Comment / Reactive Programming / By Pawel Zaras

We don’t program for the sake of programming. It is obvious. At the end of this process, there is always a user of the product of our work. We can be proud of ourselves. We can praise our work, but it is the positive user experience that we want. And these we can expect only

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How does JSON Web Token work in Java Rest API?

Full Stack Developer / By Pawel Zaras

Authentication is one of the most important parts of any web application. For many years, the solution was cookies. However, handling authentication with multiple sources at once can be difficult. The best-known solutions to the authentication problem for APIs are OAuth2.0 and JWT or JSON Web Token. What is a JSON Web Token? Before we

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