Multicast
Multicast: Point-to-multipoint connection for efficient data transfer
  • Know-how

Bandwidth plays an important role when sending data over IP networks. This is especially true when packets are being sent to more than one recipient, which can result in overloads preventing the data from being sent problem-free. Therefore, IP multicast was developed early on to enable data to be sent simultaneously to multiple destination nodes.

Multicast: Point-to-multipoint connection for efficient data transfer
SASS tutorial
The big SASS tutorial: what you need to know!
  • Web development

If you like designing websites but have a tough relationship with CSS, SASS might be the right solution for you. The preprocessor makes it easier for you to work on the design, but it has a few peculiarities. Our comprehensive SASS tutorial uses examples to explain what you can do with the programming language, and explains the subtleties of SASS syntax. If you want to learn SASS, we can provide...

The big SASS tutorial: what you need to know!
Jupyter Notebook
Jupyter Notebook: Web documents for data analysis, live coding and more.
  • Web development

Processing big data plays an increasingly important role in many companies. Among the key tasks are the separation of important and unimportant data and the creation of suitable visualizations to be able to present the results in an appropriate form. The open source tool Jupyter Notebook proves to be an excellent solution for this, as well as for displaying live code.

Jupyter Notebook: Web documents for data analysis, live coding and more.
CRUD – the most important database operations
CRUD: the basis for data management
  • Web development

It won’t take long for those looking to get into to software development to encounter the term CRUD. The acronym stands for the typical operations used for communicating with database systems; these normally form the basis of database management. But just how are these access functions for data management actually set up? And how much of role does CRUD play when it comes to the databases’...

CRUD: the basis for data management
GraphQL
GraphQL: flexible query language and runtime environment for your web API
  • Web development

Applications on the web need interfaces in order to exchange data. If you run a web project yourself and want to grant other programs access to certain data sets, an API (application programming interface) like this is essential. Established concepts such as REST or SOAP are often used in development – but there are alternatives, as GraphQL proves.

GraphQL: flexible query language and runtime environment for your web API
ERR_CONNECTION_CLOSED
ERR_CONNECTION_CLOSED: How to fix the connection error
  • Technical matters

If Chrome displays the message "ERR_CONNECTION_CLOSED" instead of the website you want to access, it means that the contacted server has interrupted the connection. Reloading the URL is often not enough to fix the problem. Unfortunately, determining the source of the error is anything but a simple task. To fix the "ERR_CONNECTION_CLOSED" error, you need a good amount of patience.

ERR_CONNECTION_CLOSED: How to fix the connection error
ERR_SSL_PROTOCOL_ERROR: the best solutions
ERR_SSL_PROTOCOL_ERROR: how to fix the Chrome bug
  • Technical matters

Chrome is the world’s most widely-used internet browser. The application scores points not only when it comes to security and speed, but also with its features such as cross-device synchronization of user data. But errors can occur even when surfing with Google’s wonder weapon. These can lead to the browser crashing or prevent certain pages from being accessed. The error message...

ERR_SSL_PROTOCOL_ERROR: how to fix the Chrome bug
B2C - Business-to-consumer
B2C: Business-to-consumer
  • Online sales

“B2C“ stands for “Business-to-Consumer” and refers to business relationships between companies and consumers. For example, when customers place an order in an online store, they enter into a business relationship with the respective company. The company enters into a communication relationship with their customers by sending an order confirmation, a newsletter, or recommendations for further...

B2C: Business-to-consumer
UTF-8: encoding global digital communication
UTF-8: the network standard
  • Website creation

UTF-8 is method of Unicode character encoding, which claims to cover all modern languages for data processing. The format has significantly influenced international digital communication. But what exactly does “UTF-8” mean? And what is special about UTF-8 in the Unicode character set? Here you can find out which structure the coding is based on, and which bytes are permitted in the standard...

UTF-8: the network standard
Windows PowerShell
Introduction to PowerShell – Tools for system administrators
  • Know-how

For a long time, Windows users were left behind when it came to command interpreters because the command prompt did not allow full access to operating system internal components, and scripting also offered only limited possibilities. This should finally change thanks to Microsoft’s PowerShell. The cross-platform program not only does much better than cmd.exe, it also provides remote computer...

Introduction to PowerShell – Tools for system administrators