Mateusz Chrzonstowski (mat3e)

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

[Łukasz Olejnik @prywatnik]

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 :) https://t.co/qWyNyF8gir

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

Slajdy z Damiana i mojego wystąpienia na @WarszawaJUG: https://t.co/RdH4mlBTWH

Przykładowa aplikacja: https://t.co/abmd4Xaxa3

Artykuły napisane przez nas w temacie:
- https://t.co/wAaIBXIE7z
- https://t.co/LTAC6lEBsi

#SpringBoot #Java #testing

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

Good overview - logs, metrics, how they grow over time, APDEX, traces, baggage, APM, OpenTelemetry, events, example @honeycombio walkthrough 👍🏻

[Warszawa JUG @WarszawaJUG]

Our own @mihn, Warsaw #JUG leader for past ten 10 years, now on the @paramountco stage with beginner's guide to #observability

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

JSONPath and each JSONPath lib having its own features 🤯

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

@piotrprz Next $BTC halving in 2 months, then probably another bull run in 2025 and another set of shitcoins, NFTs or whatever the trend will be (LLM/spatial computing coins? 😂) and another set of blockchain talks I guess

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

@LAFK_pl @polishjug Od kiedy odkryłem, że mocniejsze wciskanie touchpada w Macu też przenosi gdzie trzeba, zaczęło się kumulować 🙈🙈🙈

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

@LAFK_pl @polishjug 😱

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

@mihn @LAFK_pl @jnabrdalik @VictorRentea @polishjug

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

Somehow I overlooked this gem.

I like how fallback logic (if choosing success or failure by default) appeared non-obvious:
1. Success for growth: https://t.co/NEtoCAB4FJ
2. Failure can also break a lot: https://t.co/A5OLxu1jSB
3. #Uber choice: https://t.co/CwZj4KbgBo

[Gergely Orosz @GergelyOrosz]

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:

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

@starbuxman Asynchronous by default, synchronous when necessary
https://t.co/GWvUiaVmnL
☝️🤔

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

@tomasz_ducin @patrickjs 2019: pm2
https://t.co/wn5UEmtcj5

2021: https://t.co/biYMtKDvS6

[Luke Jackson @lukejacksonn]

So pm2 (a node process manager package on npm) just caused thousands of CI builds to fail because of an "optionalDependency" on a package called gkt which is requested as a tarball from a server that was returning 503. That package consists of one file which contains this:

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

I co-authored 2 blogposts on integration tests with #SpringBoot and they got just published:
- https://t.co/wAaIBXI6i1
- https://t.co/LTAC6lE3CK

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

TS2419: Types of construct signatures are incompatible.
X could be instantiated with an arbitrary type which could be unrelated to Y

😂😭

[Liran Tal @liran_tal]

Me and TypeScript every single time

https://t.co/yWAxp2oAXZ

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

We run #Coderetreat workshop internally and here are our thoughts, including participant's perspective: https://t.co/S7XRwXPPtf

#gdcr2023

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

Wasn't impressed by GitHub #Copilot so far, but today it really helped when checking Conway's Game of Life for @coderetreat.

[Mario Fusco @mariofusco]

... and that's why loose coupling is an important design principle

[Java @java]

Java 21 is now available! #Java21 #JDK21 #OpenJDK

Download Now: https://t.co/KCklfAPOOP
Release notes: https://t.co/jNXlB4OIbY
API Javadoc: https://t.co/XFJkHTukQi
Features: https://t.co/tqz0H6mTXi
Inside Java on JDK21: https://t.co/OeV1Jtfago

[Mateusz Chrzonstowski (mat3e) @_mat3e_]

The best located conference :)

@bbdays4

[Robert Harężlak @HarezlakRobert]

Nice slides done by @_mat3e_ in #Pokemon theme @bbdays4

[tom ッ @tom_antok]

The tech twitter looks like

[Wes Bos @wesbos]

🔥 JavaScript Sets are about to become a lot more useful with these 7 new methods:

.difference()
.intersection()
.symmetricDifference()
.union()
.isSubsetOf()
.isSupersetOf()
.isDisjointFrom()