Stefan Kecskes

Never stop learning, because life never stops teaching

Delta Lake Evolution and Migrations

In the world of data management, we often talk about schema migrations. But what exactly is schema migrations, and why it is so crucial to have a proper plan for data management? I will show you naive approach, explore some traditional solutions. We will see Delta Lake in action, but also how we can do schema migrations with our own way.

Posted by Stefan Kecskes on Monday, October 21, 2024

Data Modeling

Often, we leave the intricate details of data structures and performance to the DB Admin team, assuming that upscaling servers will solve everything. I used to think data modeling was just a fancy term for database design with only one right way to do it. Let’s talk about the crucial differences between transactional and analytical data modeling, each with its own tools and techniques

Posted by Stefan Kecskes on Tuesday, June 4, 2024

Lifetimes in Rust functions

Lifetimes in Rust are a way for the Rust compiler to ensure that the references are always valid. They prevent dangling references or data races. The compiler is checking the lifetimes at compile time. If I am right, Rust is the only language that has this concept. In this post, I will show you how to use lifetimes in functions, what doesn’t work, what not to do and what are the best practices.

Posted by Stefan Kecskes on Wednesday, January 31, 2024

Concurrency vs Parallelism

Single-threaded, multi-threaded, concurrency, parallel tasks, async task… These words are used by programmers on daily basis and while most of us understands them (fingers crossed), I believe we are using this lingo in presence of non-technical people to confuse them? or to give them more detail, with little success. Let’s recapitulate what this all is, in very high level.

Posted by Stefan Kecskes on Monday, May 29, 2023

Setting up XDebug for dev environment

I would like to describe how to set up xDebug to work in your phpStorm IDE. There are different options available depending on your preference - you can have xDebug always try to initiate a connection for your devbox, or you can use browser plugins and extensions to choose when xDebug should try to run.

Posted by Stefan Kecskes on Thursday, November 5, 2015