Tom Klein

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Tom Klein is a web and software developer and entrepreneur with lots of years of intense experience. Worked with big enterprises and small companies. He loves to use new technologies.

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The short story of the DNS Coin Flip.

Jun 21, 2021 1 min read 24 views

Whilst working on one of my projects, I was bound to write my own DNS server. I wanted to play around with it and had to dig through all the RFCs related to DNS and RRs (Resource Records). After implementing the basics, I started to getting curious ...

The short story of the DNS Coin Flip.

How to get started with NodeJS & Express

Oct 5, 2020 3 min read 74 views

Hi guys, this is a short tutorial for getting an ExpressJS web server up and running. Please note that this tutorial is made with simplicity in mind. For in-depth information, visit the respective NodeJS and express documentation. This tutorial is ba...

How to get started with NodeJS & Express

Load Balancing, Geo DNS, or Anycast?

Sep 30, 2020 3 min read 222 views

Currently, Gentlent is built on a proprietary web server that was built with scalability in mind. We always asked ourselves one question: How do we improve performance? 1. Load Balancing We started out with thinking about load balancers and DNS round...

Load Balancing, Geo DNS, or Anycast?

Google Search A/B Tests Removal of URL Schemes (e.g. http://)

Feb 12, 2020 132 views

Today, I opened a new tab to search for something on Google and realized something was missing. The scheme was removed from the results. Did they just removed HTTPS? No. Thinking Google removed https:// from the search only, I tried looking up an ht...

Google Search A/B Tests Removal of URL Schemes (e.g. http://)

Be careful using example domains.

Feb 2, 2020 161 views

Every developer used an example domain before. Whether it was one of IANA's official example TLDs (e.g. example.com, example.org), private ones (e.g. yourname.xyz) or even whole suffixes (e.g. .local, .dev). Some domains are protected by IANA for us...

Be careful using example domains.

How I started my own dev blog in minutes.

Jan 23, 2020 203 views

It all starts with the decision to start writing content. Not just any content, but paragraphs of my own thoughts and decisions to share with the world. The war between Wordpress & co. There are lots of self-hosted blogging software. Wordpress, Ghos...

How I started my own dev blog in minutes.