ERR_NAME_NOT_RESOLVED Error

“ERR_NAME_NOT_RESOLVED”: how to fix this DNS error in the Google Chrome browser

Chrome has recently become the most widely used browser in the world. However, this Google application is just as helpless as its competitors Firefox, Opera and Safari when it comes to technical problems on the server or client side. For example, if the domain name cannot be resolved by the DNS, Chrome will simply display the error message “ERR_NAME_NOT_RESOLVED”. In the following article, you...

Graph database

Graph databases explained

There are plenty of models for processing and storing large quantities of data. However, conventional databases with their rigid tabular structures quickly reach their limits when modelling complex relationships. So-called ‘graph databases’ have proven themselves to be particularly efficient for dealing with intensely interconnected data. But what exactly can they do?

PHP 5.6 Support

PHP 5.6: Support stops at the end of 2018

Security support for PHP 5.6 ceases at the end of the year. Although developers had already postponed the end date by a year, many website operators still seem to be unprepared. A large number of websites still run on PHP 5.6. From January onwards, these websites will be at risk. However, many are dreading the update. How can you protect your website?

DNS Records

DNS Records: How Do DNS Records Work?

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.

HTTP 408: How to fix the “Request Timeout” error

HTTP 408: how to fix the timeout error

Permanent availability is one of the most important things when it comes to a website. However, even the best technical conditions do not offer a 100% guarantee that a website will constantly run smoothly. Connection errors like HTTP error 408 regularly present websites with minor and major difficulties, especially since the causes are often found on the client side. Our guide looks at the causes...

Databases

Databases – why do you need them and what kinds are there?

Databases are a fundamental part of our information society today. They organise electronic data and regulate access to it. Databases have a wide range of applications, both commercial and private. Each database system has a database management system based on a specific database model. Whilst the history of the database began with the hierarchical model, today the relational database model is the...

Cross Browser Testing

Cross browser testing

Optimising your website on all devices and browsers serves is an important badge of quality for both users as well as search engines. Due to the sheer amount of different web browsers, this aspect of optimisation is often overlooked. Cross browser testing tools analyse how your website is displayed in different browsers, identify problematic codes, and support you with optimisation.

HTTP 400 Bad Request | finding the causes

HTTP 400: Bad Request explained

Internet users are often confronted with error messages. HTTP status codes can be especially annoying, and even more so if you don’t understand what they mean. The message 'HTTP 400 – Bad Request' is a mystery for many internet users, but luckily it can be solved in most cases. We explain what the error message means and how to fix the error.

504 Gateway Timeout: How to fix it

HTTP 504 (Gateway Timeout): How to fix an error 504

If the error message ‘HTTP 504 Gateway Timeout’ appears when you attempt to open a website, it means that the allowed time for responding to browser queries has been exceeded. A lot of the time the culprit is not the web server itself, but instead some other component of the server, i.e. a gateway, which is integral to the path of communication. What does 504 gateway timeout mean? How can you fix...


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