A huge range of information and entertainment being easily available thanks to fast loading times are standard in the internet of today. However, with the number of internet users and the complexity of different websites, it has also become more common to experience connection errors. For example, the Google Chrome browser displays the message “ERR_CONNECTION_REFUSED” if the contacted web server...
Error messages when surfing the net are a nuisance for everyone involved, but especially for those who have to find out what the problem is. The search for a solution can be particularly tedious if the status code message barely provides any information on the source of the error. The HTTP error 500 (“Internal Server Error”) is a collective status code. We give you tips on where errors could have...
You’re surfing around on the internet, but instead of getting the desired content you only receive an error message: annoying or even downright frustrating. Especially if you don’t exactly know what the status is supposed to mean. How are you expected to solve the problem, if you don’t know what’s causing it? This also goes for the error 401. Here we explain what the error means and what you can...
The INNER JOIN is the most important JOIN type in the relational database model. If you want to query database tables in a group, you would usually use INNER JOINs based on equality relationships between primary and foreign keys. We will show you how to use INNER JOINs in practice, delineate the JOIN type from OUTER JOINs, and also deal with the different subtypes of INNER JOINs.
The Domain Name System makes it easy for every user to navigate the internet. One of its most important components are A records, which link a domain name to an individual IP address. Only a line of text is needed. But what does this kind of record look like, and how can you perform an A record check?
Without the Domain Name System, the internet as we know it today would be inconceivable. The system for name resolution itself, is based on DNS records. In these simply structured records in normal text files, a name is stored for each IP address. However, DNS records can do more than this. Also known as resource records, various types of them exist.
The Domain Name System enables the use of domain names for surfing and is based on zone files. These in turn are made up of different records. The first DNS entry you encounter in such a data file is always the SOA record. This determines authority within the zone. We explain how the records are designed and how you can perform an SAO record check.
PTR records turn the DNS on its head: Instead of getting from a domain name to the corresponding IP address – as is normally the case – with reverse DNS the opposite occurs. Which domains belong to an IP address? You can acquire this information using PTR records, which are a special type of DNS record. How do the DNS records need to be structured for this?
The Domain Name System and name resolution enable hassle-free surfing for users on the World Wide Web. Here, the DNS has recourse to several types of resource records. One of these is CNAME. This allows different domains to be linked together with one IP address. But how do CNAME records work and how can you check the records?
Only with a secure and stable server can you handle the technical demands for your web project and guarantee its steady operation. Yet which hosting model is the best fit for each project? In our article, we draw a comparison between shared hosting and dedicated hosting in order to illustrate the advantages and disadvantages of both server solutions.