Sergey Potekhin - Software architect, Ethereum, FreeTON, DeFi
I'm a software architect, specializing in building advanced web applications with Node JS. For the last 4 years I'm working in the blockchain industry.

Latest

Apr
04

Building FreeTON dapps with Locklift

I'm happy to present you the Locklift package - it's a development environment for smart contract developers. It's inspired by
4 min read
Oct
05
Detect Ethereum front-runners with honey pot contract

Detect Ethereum front-runners with honey pot contract

In this post, I'll show you how to see Ethereum front-runners in action. To do this, I've developed the special "honey pot" contract, which allows anyone to withdraw some ethers, if they are fast enough. We will let the front-runners to do this and then research their behavior in details.
4 min read
Sep
28
Apache Superset - powerful and free way to visualize your data

Apache Superset - powerful and free way to visualize your data

The benefits of data visualization are hard to underestimate. Whether it’s a small MVP or an already built business,
5 min read
Apr
23
A simple way to add parallel operations to the Pandas dataframes

A simple way to add parallel operations to the Pandas dataframes

Perhaps you have faced the task of parallel computing on pandas dataframes. This problem can be solved both with native Python, or with the help of a wonderful library - pandarallel. In this article, I will show you how to process your data using all available cores.
2 min read
Apr
01
The role of self-isolation and hand washing

The role of self-isolation and hand washing

Many of us have been sitting at home for several weeks now, and More and more we question ourselves - is it necessary? Maybe the government and the media are greatly exaggerating - if something happened, it’s already over, we can return to the usual pace.
3 min read
Mar
23
Clean Gmail quickly and painlessly

Clean Gmail quickly and painlessly

In this article I will describe the process of analyzing my mailbox which includes almost 3000 unread messages.
6 min read
Feb
17
Visualizing data from your Node JS app with Prometheus + Grafana

Visualizing data from your Node JS app with Prometheus + Grafana

In this article I'm going to show you how to build amazing dashboards for any Node JS application, tell you about using Prometheus with Grafana and give you some code templates, so you can use them to solve your own issues.
6 min read