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...

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...

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...

Equip Raspberry Pi with a static IP address

Both the private Raspberry Pi IP address and the public IP address of the internet connection are constantly changing for most users. Such dynamic IP addresses aren’t practical for the use of a minicomputer. But if you want to use server software effectively on your Raspberry Pi, you need a static IP address for the computer in the local network. The internet access used to make the server...

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...

Clearing your RAM: our step-by-step guide

Computers simplify our working life and everyday life in many ways. However, if they do not run as usual, they can become more of a hindrance than a help. The various possible causes of performance problems include excessive memory usage, which plays an important role in managing active processes. One possible solution is to clear the RAM, and thereby increase your RAM.

Virtualisation: an overview

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

VNC: how to set up your Raspberry Pi for virtual network computing

Seeing as the connection between monitor, mouse, and keyboard to the Raspberry Pi is rarely practical, the minicomputer is often operated in headless mode (via SSH) via the command line. Thanks to virtual network computing (VNC), however, there is an alternative solution that also allows remote access to the user interface. To use this technology based on the RFB protocol, you only need to set up...

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...

Screenshots for Mac – here’s how it’s done

Screenshots can be extremely helpful and beneficial. Regardless of whether you are sending them to friends or using them professionally, it is always going to be easier to demonstrate it this way than having to describe it. Making iMac or MacBook screenshots is very easy – as long as you know how it all works. Here we show you all the keyboard shortcuts for making screenshots on a Mac, as well as...