TechScreen Revised

Pointing a domain to a new location might turn out to be a problem, because most operating systems keep a DNS cache to speed up the resolution of frequently visited sites. If the location changes before the DNS cache is updated the web server is no longer accessible until the cache is updated again.

Some web applications periodically need to perform some sort of task (retrieve data from a remote location, perform data store cleanup, etc.). Sometimes these tasks would take too long for a regular request and the user should not have to wait until the task completes.

In a web application I am developing, I had a CSS design problem. I had a title bar on top and underneath I had the content. I needed to get the content to spread itself to fit the whole screen instead of squeezing itself to the top.

In the web application I am developing, I had a barcode input text field and a URL input text field for two different functions of the application. This resulted in 4 text input fields and 4 submit buttons. The layout of the web page became confusing for new users and clattered. I needed to reduce input fields in the front end but also in the already implemented back end.

In semantic web, sparql is a powerful language which can among others query for specific knowledge from provided rdf databases. Recently I tried to find out the largest lake in each country in the world from dbpedia. I came up with a query which resulted in the country and the area of its largest lake but without the name of the lake. I wanted to list the name of the lake in the table.

The layout and appearance of a WordPress blog is determined by its theme. Most themes offer various options to customize its looks, but often some additional coding is required to create your desired design. If the theme files are modified directly, all modifications will be gone when the theme is updated. A more durable solution is desirable.

FTP is often used to transfer files from one server to another or to create a backup of a website. In most cases, copying all the required files works just fine. Problems might occur though, if some of the filenames use an unexpected charset encoding. When downloading and re-uploading such a file, the filename will be broken and the website won’t be able to serve it anymore. How can you ensure, to always download files with their correct charset encoding?

An existing WordPress site shall be moved from HTTP to HTTPS. All resources should be loaded via HTTPS after the update. Therefore, all text occurrences, hyperlinks and image resources in pages and posts must be updated with the new URL.

Internet is a very useful and powerful tool. Nowadays children learn how to use technology at a very early age, and it is necessary for adults to control what websites minors access and limit access to others or even restrict it for their own security.

The problem I faced was due to recurrent searches about the same topic. I spent 3 days looking up transport tickets from city A to city B for date D, and used several travel service web pages (skyscanner, goEuro, kiwi…). Even after I had booked and payed my tickets, I was constantly seeing adverts related to trips from city A to B, transport companies with best pricing, other trips on date D and many other topic-related adverts. These pages (mostly every website) use cookies, and even if you do not accept them, by continuing with your navigation, you’re indirectly accepting them.