The Context

When a user visits a website monetized through ads, a super-fast auction takes place. This auction is so fast, it usually finishes by the time the page loads. This provides a seamless experience for the user. Most people don’t even realize that real-time bidding (RTB) exists.

A simplified diagram of the auction process

Outbrain and Zemanta both participate in such auctions. Zemanta is one of the bidders in these auctions (DSP, or Demand Side Platform) and acts as Outbrain’s window into the programmatic ad buying ecosystem.

The Scale

At Zemanta, we handle over a million requests per second on average. That is over 100 billion processed requests each day…

The Background

Currently, I am a data scientist and software developer, but I was fascinated by robots when I was younger. I even built a small robot that follows lines and competed with it. But then I got sidetracked and landed in the software niche. Since I don’t know too much about hardware and figured that learning about it upfront might be a big-time investment, I decided to go with the new LEGO Mindstorms 51515 set. Since it seemed like one of the simplest ways of getting back into robotics.

Tricky 2.0, a slightly upgraded version of the original Tricky model.

The Code

I decided to start with something simple and make a program that…

2020 has finally come to an end, but the problems it brought seem like they will spill over into this year as well. But before you get all depressed on me. You can still do things now that can improve your life and will help you hit the ground running once things go back to “normal”.

Photo by Thought Catalog on Unsplash


First, let’s take a look at habits. Habits are the cornerstone of our life and behavior. They can help us out a ton with our goals or make us miss them completely. …

Luka Androjna

Data Scientist | Hacker

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