Hi! I have been working on an idea I would like to share for some time. It’s about organising the testing/staging/remote development environments for web projects in a way that enables instantiating each branch or tag of a given project simultaneously. What does it mean? Imagine that you are working…

Hi there! Here is a brief overview of my struggles with an interesting (I think) race condition example. It has been taken from a real-life scenario; however, a different technology was initially used. But… the technology doesn’t matter (does it?) — what counts is the theory! …

It is not an article about the parallel extension (or any other one that brings the power of threads into the PHP) — as a matter of fact I don’t think (as for the time being) there are any good use cases for using threads in PHP (there are other…

This article discusses the use of Value Objects in the context of PHP applications. The article presents step-by-step implementations of an example Value Object (class Person), as well as the use and discussion of the lbacik\value-object library. Presented examples utilise the phpspec framework as the test platform (one does not…

TL;DR version: Below you can find the explanation of the above exercise :) Terminal 1 Start a container $ docker run -ti debian Now, two short tests — check the IP address assigned to the container and create a “foo-bar” file in its root filesystem (first checking that it doesn’t exist…

It looks like “fortune” (the computer program described in Wikipedia as a Fortune (Unix)) has been around for something like 40 years already. It is a simple program that prints out a randomized quotation from its database, e.g.: ➜ ~ fortune The first duty of a revolutionary is to get…

Codi is a vim plugin to run your code in the editor. Who knows Quokka (which in my case was the first such a tool I’ve been using) knows what I mean. …

Docker & Lxc — In the previous four parts I have described (more or less detailed) Linux Namespaces — now let’s practice more with docker and Lxc! If you have any docker container started in your system — check its PID: $ docker inspect CONTAINER | grep -i pid e.g.: $ docker inspect ba26bbd2de76…

Namespace: Network (net) — Network NS is quality itself :) It may be the only NS (maybe except for mnt) the independent use of which could be not only “demonstrative”, but also completely practical. A great example of this is the Mininet project! To present you a part of possibilities that give us net…