sobolevn's personal blog

2019

• Enforcing Single Responsibility Principle in Python

  March 10, 2019 21 mins read 0 comments

  Single Responsibility Principle (or SRP) is one of the most important concepts in software development. The main idea of this concept is: all pieces of software must have only a single responsibility.

• Announcing docker-image-size-limit

  March 3, 2019 1 min read 0 comments

  Keep an eye on your docker image size, limit, and prevent it from growing too big.

• Engineering guide to writing correct User Stories

  February 23, 2019 12 mins read 0 comments

  Agile people are obsessed with writing user stories. And it is a very powerful instrument indeed. But, from my practice, a lot of people are doing it wrong. Let's learn how to do it correctly. Including proper verification and mapping to the source code.

• Python exceptions considered an anti-pattern

  February 9, 2019 17 mins read 0 comments

  You might be wondering how do exceptions are an anti-pattern and how does this relate to typing at all? Well, let's find out!

• Simple dependent types in Python

  January 31, 2019 11 mins read 0 comments

  Python typing just got a new shiny feature: Literal types. Let's dive in and get familiar with it.

• Best engineering practices: how to fix a bug?

  January 21, 2019 9 mins read 0 comments

  The important thing is: how do you respond to the bugs you and other people have created? What do you do to prevent them from happening in the future? How do you even know that this buggy situation even exist?

• Announcing dotenv-linter

  January 10, 2019 2 mins read 0 comments

  Simple linter for `.env` files. While `.env` files are pretty straight-forward it is required to keep them consistent. This tool offers a wide range of consistency rules and best practices. And it integrates perfectly into any existing workflow.

2018

• Building blameless working environment

  December 13, 2018 6 mins read 0 comments

  Blaming people does not work. Let's stop to do that. And find alternative ways to work.

• 1-minute guide to real constants in Python

  July 8, 2018 4 mins read 0 comments

  How to use final types to make your API better

• I am a mediocre developer

  March 13, 2018 8 mins read 0 comments

  I personally know some developers who are very talented and can create wonderful pieces of software with no or little struggle. Because of these gifted individuals, our industry is full of high expectations. But the sad truth is: not everyone is a ninja/guru/rockstar developer.

2017

• Using better CLIs

  October 9, 2017 4 mins read 0 comments

  Don't stick to the default CLIs, there are better alternatives!

• Instant +100% command line productivity boost

  August 23, 2017 4 mins read 0 comments

  Brief overview of some awesome command line utilities to increase your productivity and make you a happier developer

• Creating slugs for Ecto schemas

  July 19, 2017 6 mins read 0 comments

  The term “slug” comes from the world of newspaper production. If you have ever created a simple “Blog” application you have already reinvented it. Let's have a look at how you can use slugs in Elixir apps.

• Testing Bash applications

  July 8, 2017 9 mins read 0 comments

  Some time ago I was faced with a task of testing a bash script. At first I decided to use Python unit-tests, however, I was reluctant to bring external technologies to the project. Therefore I had to go with the testing framework written in the notorious bash.

• Is Yarn still a thing?

  June 12, 2017 3 mins read 0 comments

  When npm@5 was just released this question was the first one I have googled. No doubts it comes to mind since new npm version introduced a lot of yarn’s features. In other words: should I still use yarn after installing npm@5?

• Why changes in Phoenix 1.3 are so important?

  May 14, 2017 14 mins read 0 comments

  Phoenix Framework always has been awesome. But it was never as awesome as the new 1.3 release.

• Managing Django’s settings

  April 1, 2017 4 mins read 0 comments

  Managing Django’s settings might be tricky. There are severals issues which are encountered by any Django developer along the way.