Docker tutorial: Installation and first steps

Docker tutorial: Installation and operation of the container platform

The open source container platform Docker is quite exciting to the open source community. As an alternative to hardware virtualization based on virtual machines, Docker has made the use of software containers acceptable outside of the Linux universe. In our tutorial for beginners, we break down the Docker trend from the ground up. With these clear, step-by-step instructions, learn how to install...

Apache Kafka tutorial

Kafka tutorial: getting started with Apache Kafka

The Scala-based streaming and messaging software Apache Kafka is one of the most popular solutions for efficiently storing and processing large data streams. In this Kafka tutorial, you will learn the requirements for using this open source software and how best to install and set up Apache Kafka.

Virtualization

Virtualization: an overview

In this article we will give a definition of virtualization, and look at in which cases virtualization technology can be used. Furthermore, we will also look at the forms of virtualization which everyone should be familiar with, with a specific focus on corporate environments.

Windows won’t boot

Windows 7, 8, 10 will no longer start – causes and solutions

Every Windows user knows: No matter which version you use, the popular Microsoft operating system has its bad days. Sometimes these are so serious that the worst possible outcome happens: Windows won't boot anymore. You might think there’s nothing you can do, but don't panic: Boot problems and bluescreens can be solved quickly in most cases.

Create a ZIP file

Create a ZIP File: compress your files

Send multiple images and videos via email, archive large amounts of data without using too much space, or encrypt confidential documents - you can do all of this by zipping files. We show you how to create a compressed ZIP file in Windows as well as macOS in our step-by-step guide. We also show you how to protect your files with a password if needed. This way, you can manage your storage space...

How to make your Raspberry Pi into a DNS server

Your own DNS server with Raspberry Pi: How to

Without the domain name system, surfing on the internet would be much more difficult, as we would have to memorize a lot of IP addresses. With the help of DNS servers, we can instead use a memorable domain name to access our favorite website. Find out how you can set up your own DNS server and learn more about the basics of the World Wide Web. All you need is the minicomputer Raspberry Pi and an...

Flush DNS

Flush DNS: how to clear your DNS cache

Various operating systems, such as Windows or macOS, automatically save information about address resolution from systems and applications in the network in a DNS cache. For Linux there are also corresponding services, though they have to be installed by the user. The purpose of this practical cache is to speed up network traffic, which is particularly important on the internet. Why it’s useful to...

Hosts File

What is the hosts file and how do you edit it?

The hosts file used to resolve website names so that certain IP addresses could be accessed. The method was largely replaced by the DNS (domain name system). However, the hosts file is still indispensable for local networks. In addition, certain rules can be set for websites e.g. to block them. We show you where you can find and edit the hosts file in your operating system.

Clearing the Cache

Clearing the cache: deleting the browser’s cache

Information is often cached so that visited website can be loaded quickly and videos and gifs can be viewed offline. However, if the cache contains a large, or very large amount of data, it can cause problems and adversely affect computer performance. Therefore, it makes sense to delete the cache from time to time.

Nginx tutorial: getting started with nginx.conf

NGINX tutorial: the basic commands and configurations

Nginx is very different from traditional server software such as Apache in the way that it responds to client requests and the fact that it also involves configuration changes. In this nginx tutorial you can learn how to make changes without having to restart the web server software as well as how to set up a simple proxy server for images in just a few steps.

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