Blog | Web-Performance Blog

New Kudu for Linux App Service

Already published in February 2020 with the “preview”-state, the new Kudu was published on Microsoft’s website. But until recently, I was also not aware that this existed. Now in July 2024, the default link from the Azure portal still leads to the old Kudu, with the new Kudu only available if you know it’s there.
What is ClaudeBot/1.0

ClaudeBot is a web crawler used to download training data for training LLMs (Large Language Models). This bot is operated by Anthropic, the company that runs Claude.ai. Should you block CaludeBot or limit its access, and how can you do that? Find out more in this article.
Freshping.io webhook issues July 2024

I am a free customer of Freshping service. Since yesterday evening July 9th, 2024, my integration with pushover.net using a webhook has stopped working, and I couldn’t find any way to fix it. My integration remains present, and the configuration appears to be correct. However, webhooks seem not to be sending out notifications. Due to…
GitHub follow commits as RSS

There might be times when you want to closely follow updates to a public GitHub repository. I had this use case in June 2024 when following the Swiss NCSC for cyber threat information regarding DDoS attacks. I solved this problem by setting up an API key and regularly querying the main branch commits. However, this…
Understanding GLCID, WBRAID, and GBRAID

In today’s digital marketing world, tracking how ads perform is crucial. Google has been helping advertisers track ad performance using something called GLCID. Recently, Google introduced two new tools called WBRAID and GBRAID. These changes are due to new privacy rules from Apple, and they help advertisers see how effective their ads are without compromising…
SWICO: Hosting

I familiarized myself with the “Leitfaden für Behördenanfragen zu Kundeninformationen und -inhalten” which was created by Swico to guide Swiss hosting providers on handling inquiries from Swiss authorities and courts regarding customer activities, information, and content.
Reponse Time Buildup

This is a quick snippet, a view onto a Statuscake response time graph. A web application had a memory leak, and over multiple days, the response time was building up on instance 1. If instance 2 is queried, the response time is good; instance 1 had the memory leak and would cause the response time…
WSUS Offline Update

I have used this software for my netbooks that always failed to download the Windows update. I was able to extend the useful life of the device for years. This tool may not be very corporate-ready, but if you have a Windows device and you need to update it offline and easily, this can be…
Azure updates feed broken since June 2024

Microsoft is currently undergoing maintenance and is not providing RSS feeds for Azure updates. The last regular updates was on June 3rd, 2024. For me, this is a major inconvenience. Azure Updates website is undergoing maintenance. During this time, you may notice limited functionality affecting RSS feeds and search features. We apologize for any inconvenience…
Analyze HAR with HTTP Watch Studio

The HTTP Archive format, known as HAR, is a JSON-formatted archive file format used to log a web browser’s interactions with a website. To save a HAR file in Chrome, open the Developer Console. The HAR file contains everything, including cookies and sessions, which can be considered secrets. Remember to be careful with whom you…