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: 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...

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: 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.

Create a screenshot on Windows: How it works

With screenshots, you can show your colleagues and friends with just a few clicks what you’ve just seen on your screen. This can be an important part of your daily workload as well as something you use in your free time. But how do you actually create a screenshot? On Windows, the necessary resources are already built in. We explain to you how to use them correctly.

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.

Solr: the powerful search platform from Apache

What exactly is Solr? The answer to this question lies in our article. In combination with the Java library, Lucene, Solr can be used to build powerful web search engines. Do you need to index your documents? Solr will take care of this. First, we explain the basic terms of practical open source software and its functions. In our Solr tutorial, we’ll explain how to set up the search platform. In...

Raspberry Pi and Plex: how to turn a single-board computer into a media server

Plex is among the most popular and user-friendly solutions for creating a media server in your home network. In contrast to many other applications, which are often Windows-only, the Plex server is compatible with Linux, Mac, and even single-board computers like the Raspberry Pi. In this Raspberry Pi and Plex tutorial, you will learn what technical requirements must be fulfilled and how...

Elasticsearch: the flexible search engine

If you work with large amounts of data, you’ll need a powerful search engine. Elasticsearch offers you a full-text search that you can configure so that it is perfectly tailored to your needs. But first you have to understand the principle behind it – what is Elasticsearch?. In this Elasticsearch tutorial we’ll explain the first steps in using the search engine, from installation to creating a...

Apache Lucene: free search for your website

Who wouldn’t want to build their own search engine that’s adapted precisely to their requirements? Apache Lucene makes this possible. The open source project can be precisely adjusted and also works extremely quickly, which is why even large companies such as Twitter rely on Lucene. In our Lucene tutorial, we show you how to use the full-featured text search. But first the question: What is...