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CLOUD

Is Network Service Mesh a service mesh?

Service mesh solutions are increasingly becoming an important element of modern applications built on the basis of microservices architecture. But here and there, you can also hear about a project called Network Service Mesh. Is it another variation on the service mesh theme or something completely different? A service mesh is a kind of “network” that connects all microservices within a given application. In fact, it is extra software that acts as an intermediary layer between services and provides a wide range of functions in the fields of security, observability, and traffic management, as well as reliability and resilience.
Multiple authors

Multiple authors

Thumbnail of an article about Learning Go for C++ developers — differences and insights
SOFTWARE DEVELOPMENT

Learning Go for C++ developers — differences and insights

Some people enjoy discovering new songs, bands and genres. Others prefer listening to the songs they already know. One could say the same about programming languages. I've been listening most often to the song of C++, which I just enjoyed building my expertise in. Also Python was a recurring beat. Recently, having started a new project, I've been asked to learn the song of Go. This post is not supposed to be any kind of introduction to Go’s learning path. I just wanted to share some of my "Aha!" moments and analogies from the ongoing process of learning Go, from the perspective of the C++ genre.
Łukasz Drożdż

Łukasz Drożdż

Thumbnail of an article about CSS Container Queries. Why so enthusiastic about those?
SOFTWARE DEVELOPMENT

CSS Container Queries. Why so enthusiastic about those?

A front-end developer spends time adjusting CSS to the app they are working on, how much time depends on the specific project. Many people assume this is the easy part. I thought so too, but now I think I was wrong. CSS, or Cascading Style Sheets, is a style sheet language that focuses on the presentational part of the layout. Some people enjoy it, some even love it, but there are people who avoid it at any cost and try to focus, for example, on JavaScript logic instead. There are times that I feel like I belong to both groups.
Robert Rochon

Robert Rochon

Thumbnail of an article about Why should you be grateful for act() warnings in React tests
SOFTWARE DEVELOPMENT

Why should you be grateful for act() warnings in React tests

If you have ever written a test using the React Testing Library there is a good chance you have encountered the notorious act() warning. Usually, a solution can be found through intuition and/or a lucky guess, but not this time, though. Welcome! Let’s dive deeper into act() warnings to really understand them. I have created an uncomplicated newsletter app to act as a simple example.
Michał Kuliński

Michał Kuliński

Thumbnail of an article about Network ACL processing algorithms — optimizing firewall's performance
NETWORKS
SOFTWARE DEVELOPMENT

Network ACL processing algorithms — optimizing firewall's performance

A firewall is an important component in protecting a network from attacks. It allows configuration of what kind of traffic is allowed inside the network. So in a sense, a firewall is a barrier that can reject all suspicious connections at the very entrance to the network, making potential attacks significantly more difficult. There are many types of firewalls. In this article, we will focus only on simple stateless firewalls that work in the 3rd and 4th layer of the OSI model (L3 + L4 firewalls). Typically, a firewall uses a user-specified access control list (ACL) to decide which packets to let through and which to block.
Michał Niciejewski

Michał Niciejewski

Thumbnail of an article about How memory types affect DPDK application performance — case study
SOFTWARE DEVELOPMENT

How memory types affect DPDK application performance — case study

In this blog post, I will describe a problem encountered while working on a project involving GPU usage in network traffic processing (knowledge of GPU programming won’t be required as it will quickly become apparent that the problem is more general and the GPU can be eliminated). I will describe the steps that helped me in locating and fixing the problem – practical methods used for DPDK profiling and debugging. Also, I will describe some low-level internal DPDK mechanisms (e.g. packet processing, IOMMU, hugepages usage and impact) that helped in understanding the issue.
Michał Niciejewski

Michał Niciejewski

Thumbnail of an article about MobX in React — Scalable State Management
SOFTWARE DEVELOPMENT

MobX in React — Scalable State Management

MobX in React – using the MobX library in React-based applications – was the first part of our tech talk in which our principal frontend engineer covered the basics. This first video covered topics like what MobX is, how it works, how to use it outside React, and how MobX can be integrated with React components. The next episode focuses on reviewing types of states in Single Page Application (SPA), how to scale SPA using dependency injection with the react-ioc library and what benefits it offers, and points out the areas for MobX.Everything to provide you with knowledge about the best state management for React, and scalable state management in MobX.
Karolina Rusinowicz

Karolina Rusinowicz

Thumbnail of an article about Generics in Go — everything you should know before you start
SOFTWARE DEVELOPMENT

Generics in Go — everything you should know before you start

Go 1.18 introduces a new mechanism for generic programming – type parameters. This long-awaited feature finally sees daylight in the officially accepted proposal. This article focuses on a complex description of how type parameters work – everything you need to know about Go generics, with examples, in one place. Are you interested in more information about the language itself? Check out our previous articles for a Go overview and how it is different from Python. It is common knowledge that Go is a statically-typed programming language.
Daniel Furman

Daniel Furman

Thumbnail of an article about Example use case of network troubleshooting during the VNF lifecycle
NETWORKS

Example use case of network troubleshooting during the VNF lifecycle

This article will guide you through a proposition of an implementation of network monitoring and troubleshooting during the Virtual Network Function (VNF) lifecycle, based on a combination of data gathered from SDN - in our case Tungsten Fabric (TF) - and OpenStack. This article is a promised follow up to our article Network traffic troubleshooting during the VNF lifecycle - aspects of Tungsten Fabric flows. In the case presented in this article, the main challenge with network monitoring and proactive troubleshooting is to identify the root cause of potential flow-related errors before they cause a service outage.
Łukasz Drzewiecki

Łukasz Drzewiecki

Thumbnail of an article about Next.js — what do you need to know?
SOFTWARE DEVELOPMENT

Next.js — what do you need to know?

The Next.js framework is often appreciated both by developers and clients as a real helping hand when it comes to building front ends. However, there is still a lack of resources that clearly show the advantages of Next.js and how it can really help during the application development process. This article is full of the knowledge of Next.js that developers look for, and here they can learn about what Next.js is, what problems it solves, and its pros and cons. Next.js is an open-source JavaScript framework created by Vercel (previously Zeit).
Tomasz Kleszczewski

Tomasz Kleszczewski

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