Web-Performance Blog
On January 20-24, 2025, we have the World Economic Forum in Switzerland. Last year this caused various DDoS attacks on Swiss websites. If this year we see DDoS activity again is yet unknown. Being only days away from the forum taking place, we might soon see if Switzerland is again in focus of NoName057(16) or other actors.
Ahref has released on their website a tool to have an image processed and returning alt text. Processing images is a good way of utilizing AI in my opinion. The offer is nice as an idea but also convenient as the tokens for image processing are rather expensive. Based on the short texts returned, I imagine they resize the image to smaller before having it processed. Try it out and consider using it for your online posting and have the web more accessible.
A recent study by The Guardian found that AI search engines like ChatGPT Search can be manipulated by hidden information on websites.
Since November 19th, 2024 Azure Functions Flex Consumption is now generally available. I was waiting for this for quite some time but missed the update on the regular Azure updates. Even when filtering, I can’t see an entry on the Azure updates feed, therefore you might have missed this news too, so I’ll share it here as well.
As of January 14, 2025, regional availability is still very limited. For example, it’s not available in Switzerland.
Since the update to macOS Sequoia, you might encounter an error in your browser, specifically in Chrome, when trying to access a resource on your local network, such as a NAS, Plex, or anything else you host yourself.
ERR_ADDRESS_UNREACHABLE 
This is a topic that really threw me for a loop – I have an application which displays a receipt, but it was unable to display it properly. The issue was that my application is running on Domain A (mia.web-performance.ch) and the store that created the receipt is running on Domain B (pia.web-performance.ch). Whenever you clicked the link to view the PDF, you got a blocked page instead.
I spent quite some time searching for answers online, but unfortunately, most of the results I found were unhelpful and didn’t provide any real solutions.
The need did arise to have my own URL shortener like bit.ly. I was even so simple to use bit.ly, but they do not offer “branded domain” on the free tier.
So, I was researching using Claude AI to see what self-hosted options are available that best case can run on inexpensive shared hosting. My needs are minimal. I need redirects, a UI, a simple API, and statistics on how much this is used.
I recently had an issue with a host that was already months ago added to Dynatrace, but needed to be readded. I didn’t show up in the OneAgent deployment status screen.
Normally, I would be successful by restarting the OneAgent service on Dynatrace on the host I wanted to add.
I recently updated my Piwigo instance to version 15. Not out of a real need, but rather just because it’s good to stay current with software updates. This is the first time I ran into an issue, which I caused but didn’t expect.
I deactivated and deleted most languages, and I also switched my default from “English [GB]” to “English [US]. A mistake as I later found out.
YAML is used in a wide array of applications, whether in Ansible scripts or elsewhere. In general, it is easier to write YAML than to write correct JSON on your keyboard. If you need to read and parse YAML on your Windows computer, you may find it necessary to install LibYAML to have access to useful functions like yaml_parse().
Uncaught Error: Call to undefined function yaml_parse() in yml2xml.php:5This post will explain how you can add LibYAML to your Windows XAMPP installation. This will also resolve the error in case the function is not yet present on your system. However, this is not limited to XAMPP, as the process is similar if you run a Windows server with PHP.