Tag: Backend

How atom keys with JSON in Ecto can break your system

Patryk Bąk

Feb 19, 2021

If you use the map type in your Ecto schema, you definitely should read this article. It'll help you to avoid possible system failures.

Engineering

#Technology

#Backend

Ecto.Query.preload/3 vs. Ecto.Repo.preload/3

Łukasz Pauszek

Dec 29, 2020

Which is better Ecto.Query.preload/3 or Ecto.Repo.preload/3? Read and find out what are the main differences.

Engineering

#Technology

#Backend

Renaming column and table in database migrations with Elixir and PostgreSQL

Patryk Bąk

Dec 21, 2020

Step by step tutorial on what to do to guarantee zero downtime deployment, while deploying a new version of our application on more than one node.

Engineering

#Technology

#Backend

Decomposing domain models based on lifecycles

Maciej Kaszubowski

Jun 24, 2020

There is no one golden solution to decomposing. As it is one of the hardest things to do, it is essential to know the various approaches. That is exactly what you'll find in this article.

Engineering

#Technology

#Backend

Modular software design - 10 common mistakes

Maciej Kaszubowski

Sep 17, 2020

Modular software design is all about dividing functionalities into independent pieces - modules. Learn what are the most common mistakes to avoid.

Engineering

#Technology

#Backend

#Web

Is Code Review harmful?

Maciej Kaszubowski

Aug 31, 2020

How does code review affect your team? Can it be harmful? This article lists some issues that can be related to code review and some ideas for improvement.

Engineering

#Technology

#Backend

#Web

Concurrency and parallelism with Elixir and BEAM

Patryk Bąk

Aug 25, 2020

Patryk from our Backend team explains the differences between concurrency and parallelism, based on Elixir and BEAM.

Engineering

#Technology

#Backend

#Web

Handling failures in background workers with Elixir and supervisors

Patryk Bąk

Jul 07, 2020

Elixir allows us to write systems that can run practically forever. Does that mean that we don't have to do anything to make our systems reliable?

Engineering

#Technology

#Backend

#Web

Why shouldn't you use Elixir code in database migrations?

Patryk Bąk

Jun 17, 2020

Elixir code used in migrations can cause troubles when we decide to start up our system with an empty database. But we'll help you to deal with that!

Engineering

#Technology

#Backend

#Web

How to migrate live production data

Patryk Bąk

Jun 01, 2020

Even simple migrations can be dangerous and when executed incorrectly can lead to errors and downtimes. Avoid these problems with our dev team tips.

Engineering

#Technology

#Backend

Should you use database transactions for data consistency?

Patryk Bąk

Apr 15, 2020

In our systems, most business actions require changes across multiple contexts. How can we keep these contexts consistent?

Engineering

#Technology

#Backend

Don't tell me how to test my software

Maciej Kaszubowski

Aug 29, 2019

Why do you write tests? Get to know the most important reasons and change your approach with an eye-opening article from AppUnite team member.

Engineering

#Technology

#Backend

Events and different kinds of coupling

Maciej Kaszubowski

Jun 28, 2019

Piece of meaningful advice for developers on when and why you should or shouldn't use events.

Engineering

#Technology

#Backend

The Big Ideas

Maciej Kaszubowski

Sep 11, 2018

If you look at the history of Computer Science, you can see that there are few big ideas that keep emerging. Is there a lesson that we may learn from this?