In this profile I will post some blog posts, some Tips or Tricks, some rambling and ideas about various things regarding to software and hardware developing.
For the hardware side see also my other profile 8 bit computer in german.
Also I will showcase a few open source projects I did in the past that may be interesting for others.
I my area of work I don't just build any kind of software, usually the really oddballs, like extreme performance, exotic environments and mostly stuff "others" said it's impossible.
Some examples wanted?
Imagine a service that gets HTTP requests, does some magic on it and returns an answer that is unique per request and based on database stuff, a lot of processing and logic behind it.
Now imagine that you need to do this in less than 10ms per requests and for millions or even two-digit billions of requests per day.
Just to compare that to a well known site: wikipedia.org.
According to their statistics they get something in the range of 21 billion page requests a month (September 2021), mostly delivered via cache.
Now compare that to one job I did with >10 billion requests A DAY without any kind of caching.
Or a more recent project with a smaller 3-digit million requests per day with average response time of 1.1ms including network latency, measured by the load balancer.
On the other side, I do stuff like this website, various front-end tools for above mentioned and sometime small project using embedded micro controller with 8 Bit and <1KB RAM.
Welcome to my crazy world.
Why the name grumpy?
Simple, in my crazy world I need to do low end stuff and stuff that is stable and does not move on that quickly.
Some of my friends and coworkers called me old-school, innovation resistant and especially when I tell them what I think about their new toy, this hyped thing: basically grumpy old guy that does not want to change. So the name.
But when I see their advertisements of "fast" processing: We were able to to process 500 requests per second and used only a cluster of 3 16 core, 64GB RAM fat highend-servers, I do cringe.
- Become a better team lead
- Play "Music" with stepper motors Part 1 Part 2 Part 3
- DIY air quality sensor (ESP32 based)
- Building a keyboard filter Part 1 Part 2 Part 3
- Build an path animator tool to create 3D-special effects (Introduction to the tool)
- Using the Path Animator tool in Blender
- CIMDIT the "completely insane multi device" Introduction Part 1" Part 2 Part 3 Part 4 FAQ
- Using putty without password (private/public key auth)
- How to set up gpg email encryption with thunderbird
- Backup strategies
- Free and easy ticket system