System Architecture

This post provides an irreverent view on the debate around observability vs. monitoring, which is a rather confounding topic. […]

As a software engineer, you always have the challenge to design a system that is always available, scales well with increasing load, and responds with low latency. The principles used in the system differ from application to application. There is no unique solution for designing the system. It is an open-ended problem with many possible solutions. Even though there are no optimal solutions there are guidelines to tackle each component of System Design. This article will focus mainly on non-functional components of System Design that are Consistency, Availability, Partition-Tolerance, and Scalability. Further, we see how these components work in distributed and non-distributed environments.

Author: Andrei Kvapil (WEDOS) When you own two data centers, thousands of physical servers, virtual machines and hosting for hundreds of thousands sites, Kubernetes can actually simplify the management of all these things. As practice has shown, by using Kubernetes, you can declaratively describe and manage not only applications, but also the infrastructure itself. I work for the largest Czech hosting provider WEDOS Internet a.s and today I'll show you two of my projects — Kubernetes-in-Kubernetes and Kubefarm.

There are DevSecOps and AppSec protocols that can help you protect your organization from this unfolding Log4j_2 crisis and others like it.

There are some data structures around that are really useful but are unknown to most programmers. Which ones are they? Everybody knows about linked lists, binary trees, and hashes, but what about ...

HTTP/3 is here, and it’s a big deal for web performance. See just how much faster it makes websites!

Ever wondered exactly how your tap-and-go products work? It’s not NFT, it’s NFC!

As a full-stack developer, especially a front-end developer, DevOps technologies and the way DevOps developers think were always a mystery to me. When the company I work for launched a new command-line interface (CLI) application called Gatekeeper, I jumped into the world of DevOps and Kubernetes, and what I learned turned out to be very valuable. I now have a much better understanding of Kubernetes and the DevOps pipeline, and I can better explain how our CLI application supports them both.

When you work with Kubernetes, it slowly becomes your production temple. You invest time and resources into developing and nurturing it, and you naturally begin looking for ways to control the Kubernetes end user in your organization. What can it do? What resources can it create? Can it label two deployments in a specific way? Which best practices should we follow? Meet OPA Gatekeeper. This article will show you how to use it to create and enforce policies and governance for your Kubernetes clusters so the resources you apply comply with that policy.

One of the characteristics of a good REST API is that it uses the standard HTTP methods in a way they are supposed to be used. We hear this…

“Many programs don’t have well-defined interface. They should have.” — Joe Armstrong.

How to use HTTP status code in the authorization context? When to use "401 Unauthorized" status code? When to use "403 Forbidden"? Let's ...

xq needed vector graphics for a Zig project and figured that everyone including themselves uses SVG. Doing so xq learned that implementing a new SVG library is hard. First of all, SVG is built on t…

SchemafreeSQL empowers your SQL database

Over time, every system becomes increasingly complex. That’s because in order to make it better, we tweak it. We add exceptions. We do things that are urgent, essential or smart for a particu…

If you rent a car from Enterprise, you'll find this thing in the glovebox: That little template is a Damage Evaluator Tool. Enterprise suggests that upon receiving your rental, you "Walk around the car looking for safety issues and damage. If you see any damage to the vehicle you

NVIDIA says its BlueField-2 smartNIC/DPU can link a storage system to a server and run four times as fast as Fungible’s competing hardware and software. But it did not reveal details of its test, making for confusion and incomplete understanding – until detailed tables were supplied, showing an awesome 55 million IOPS number – possibly […]

Chaos-as-a-Service will ultimately enable enterprises that aren’t running at the scale of Netflix or Facebook to leverage Chaos Engineering.

In agent mode, CNCF's Prometheus monitoring tool is applicable to edge computing and networks for which energy consumption and resource savings are critical.

In this blog, we'll discuss the uses of artificial intelligence in detail. We have given the best information about it. We hope it will be beneficial for you.

Ever wondered what browsers do to get JavaScript to execute quickly? Let’s take a look.