@_mat3e_

Experienced #FullStack Software Engineer, IT Trainer & IT Showman focused on a business software. #JavaScript, #Java, #AI, #Technology, #MMA, #DragonBall

 Warsaw, Poland
Joined November 2016
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  • Following307
  • Followers408
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Mateusz Chrzonstowski (mat3e) retweeted
Łukasz Olejnik
@prywatnik8 Aug 2025
Chińscy naukowcy opracowali najlepszy od 41 lat algorytm wyznaczania najkrótszej ścieżki w grafie! Zespół z Tsinghua University przełamał barierę sortowania Dijkstry. To pierwsza poprawa od 1984 r. Nowy algorytm działa w czasie O(m*log⁡2/3n). Co to może dać? Szybsze GPS, routing internetowy i planowanie tras w logistyce. W praktyce oznacza to krótsze czekanie na wyznaczenie drogi, mniej korków, tańsze dostawy i sprawniejsze działanie sieci komputerowych. No i konieczność aktualizacji programu studiów informatyki :) arxiv.org/pdf/2504.17033
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Slajdy z Damiana i mojego wystąpienia na @WarszawaJUG: mat3e.github.io/talks/spring… Przykładowa aplikacja: github.com/mat3e/downloads-s… Artykuły napisane przez nas w temacie: - paramount.tech/blog/2023/12/… - paramount.tech/blog/2023/12/… #SpringBoot #Java #testing
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Good overview - logs, metrics, how they grow over time, APDEX, traces, baggage, APM, OpenTelemetry, events, example @honeycombio walkthrough 👍🏻
Warszawa JUG@WarszawaJUG4 Jun 2024
Our own @mihn, Warsaw #JUG leader for past ten 10 years, now on the @paramountco stage with beginner's guide to #observability
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JSONPath and each JSONPath lib having its own features 🤯
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Somehow I overlooked this gem. I like how fallback logic (if choosing success or failure by default) appeared non-obvious: 1. Success for growth: xitter.cf/GergelyOrosz/status/15… 2. Failure can also break a lot: xitter.cf/GergelyOrosz/status/15… 3. #Uber choice: xitter.cf/wspruijt/status/150331…
Gergely Orosz
@GergelyOrosz13 Mar 2022
As it's been ~3 years, figured I'll answer "What caused the Uber Eats glitch that allowed ordering free food for a weekend in India?" This was an outage on my watch. Given Quora is paywalled - can't post the answer w/o a sub - here's the story on idempotency & breaking changes:
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I co-authored 2 blogposts on integration tests with #SpringBoot and they got just published: - paramount.tech/blog/2023/12/… - paramount.tech/blog/2023/12/…

A little more on Spring tests - good practices

Good tests setup, foundations, and practices.

paramount.tech
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TS2419: Types of construct signatures are incompatible. X could be instantiated with an arbitrary type which could be unrelated to Y 😂😭
Liran Tal
@liran_tal19 Nov 2023
Me and TypeScript every single time xitter.cf/ciksgibiyim/status/171…
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We run #Coderetreat workshop internally and here are our thoughts, including participant's perspective: paramount.tech/blog/2023/11/… #gdcr2023

Our take on Global Day of Coderetreat 2023

Organizing, running and participating in internal coding workshops

paramount.tech
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Wasn't impressed by GitHub #Copilot so far, but today it really helped when checking Conway's Game of Life for @coderetreat.
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Mateusz Chrzonstowski (mat3e) retweeted
Mario Fusco@mariofusco29 Sep 2023
... and that's why loose coupling is an important design principle
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Mateusz Chrzonstowski (mat3e) retweeted
Java
@java19 Sep 2023
Java 21 is now available! #Java21 #JDK21 #OpenJDK Download Now: social.ora.cl/6018P4fbj Release notes: social.ora.cl/6019P4fbd API Javadoc: social.ora.cl/6011P4fb5 Features: social.ora.cl/6013P4fb9 Inside Java on JDK21: social.ora.cl/6016P4fbY

Java 21 now available

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The best located conference :) @bbdays4
Robert Harężlak@HarezlakRobert16 Sep 2023
Nice slides done by @_mat3e_ in #Pokemon theme @bbdays4
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Mateusz Chrzonstowski (mat3e) retweeted
tom ッ
@tom_antok29 Aug 2023
The tech twitter looks like
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Mateusz Chrzonstowski (mat3e) retweeted
Wes Bos
@wesbos25 Aug 2023
🔥 JavaScript Sets are about to become a lot more useful with these 7 new methods: .difference() .intersection() .symmetricDifference() .union() .isSubsetOf() .isSupersetOf() .isDisjointFrom()
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Mateusz Chrzonstowski (mat3e) retweeted
Massimo
@Rainmaker197315 Jul 2023
40 years of Boston Dynamics (1983 - 2023) [📹 World Data Center, HD: buff.ly/3Od48w2]

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Mateusz Chrzonstowski (mat3e) retweeted
I Am Devloper
@iamdevloper5 Nov 2013
10 lines of code = 10 issues. 500 lines of code = "looks fine." Code reviews.
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#JavaScript #MemoryLeaks link.medium.com/4Oe5HFwnYyb

Memory Leaks in SSR Web Apps

Introduction

link.medium.com
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#IntelliJ should enable Semantic highlighting by default
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Mateusz Chrzonstowski (mat3e) retweeted
Programmer Humor
@PR0GRAMMERHUM0R11 Jan 2023
Joke of the year reddit.com/r/programmerhumor…
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They want to prevent people from learning #TDD 😛
Oege de Moor
@oegerikus5 Jan 2023
Take your test pilot for a spin: GitHub Copilot Labs now comes with a test generator, that creates and refines tests! @GitHubNext
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