How to setup remote docker host


Not all docker images are available for ARM architecture (hopefully this will improve over time). Right now I’m working on a project where images for ARM are not available. Emulation works ok (but slow) most of the time. Lately, I stumbled upon an interesting performance/startup issue when running amd64-based containers using testcontainers in an integration test.

26 Sep 2022

How this blog is build


In this post, I’d like to show you how I’ve started with writing this blog. How the process evolved during 3 years of writing. How I’ve finally managed to set up everything in a way that works for me now. If you don’t blog yet this might help you out with technical details on how you can start easily. If you already have a blog maybe you’ll be able to pick up some ideas.

14 Feb 2020

Hands-on RedisTemplate


We are improving cache in the project Im working on. In the code base I’ve found a method which accepted a collection of ids and returned collection of objects for those ids. My goal was to add cache on individual values returned by the method. Creation of items was IO heavy and time-consuming operation so removal of cache was not an option.

11 Sep 2019



Recently I’ve found a very interesting project which allows to spin up docker containers for test purposes. Writing tests checking integration with external services is not an easy task. With testcontainers library it gets simpler because you can have external service up and running just for your test in a couple of lines of code.

18 Jul 2019

Dockerized e2e tests


In my free time, I’m trying to learn something new and best of way learning is by doing. To avoid spinning my wheels in vain I’m helping to develop some product. In the previous post, I’ve described what we’ve decided to use for the UI and pointed out that I’m going to write integration tests. Here is how I integrated selenium e2e tests with gitlab-ci/travis-ci/whatever by running them in docker.

15 Feb 2018

Dockerized dev database


If because of reasons you have to run Maria/Postgres/Oracle on localhost for development and you often import database dumps into it you probably spend some time waiting for DB to be ready to use. In this post, I’m going to show you how you can automate the whole process and save some time doing it with docker.

9 Jan 2018