Articles tagged with
debugging
14 Dec 2023
This article is a form of a public postmortem in which we would like to share our bumpy way of revealing the cause of a mysterious performance problem.
Besides unveiling part of our technical stack based on open-source solutions, we also show how some false assumptions made such a bug triage process much
harder.
Besides all NOT TO DOs, you can find some exciting information about performance hunting and reproducing performance issues on a small scale.
As a perk, we prepared a repository where you can reproduce the problem and make yourself familiar with tools
that allowed us to confirm the cause.
The last part (lessons learned) is the most valuable if you prefer to learn from the mistakes of others.
31 May 2023
As a part of a broader initiative of refreshing Allegro platform, we are upgrading our internal libraries to Spring Boot 3.0 and Java 17.
The task is daunting and filled with challenges,
however overall progress is steady and thanks to the modular nature of our code it should end in finite time.
Everyone who has performed such an upgrade knows that you need to expect the unexpected and at the end of the day prepare for lots of debugging.
No amount of migration guide would prepare you for what’s coming in the field.
In the words of Donald Rumsfeld there are unknown unknowns and we need to be equipped with the tools to uncover these unknowns and patch them up.
In this blog post I’d like to walk you through a process that should show where the application hangs,
although there seems to be nothing wrong with it. I will also show that you don’t always know what code you have – problem known as dependecy hell,
place we got quite cosy in during this upgrade.
09 Aug 2016
This article tells a story of chasing an iOS bug – a bug hidden so deep that it
required many different skills and debugging on different levels to identify it.
I think every native mobile app developer (not only an iOS developer) will find
this text interesting. Non-mobile developers may find it an intriguing read as
well.
06 Feb 2015
Even though a lot of software development is high-level stuff which does not require the developer to delve into the details of how things
work under the hood, in certain situations it can be very helpful to know what sort of low-level operations an application is performing.
Two typical scenarios are performance tuning and debugging.
