Adding Event Sourcing to an existing PHP project (for the right reasons)

Talk presented at PHPDay 2018 (Verona)
Language: en Slides available
See talk comments on Joind.in.

“Event Sourcing”, along with “CQRS” (Command Query Responsibility Segregation), have recently become trending terms, and now there is so much theory, blog posts and talks about them.

However, most of these deal with the problem starting from an utopian assumption: having to write a project from scratch (greenfield), but at the same time with a high domain complexity right from the start, enough to justify the use of a complex technique like event sourcing and CQRS, which carry a fair amount of inherent complexity.

Paraunit 0.12.1: a small fix

I had to release a fast fix for a problem introduced in the 0.12 release, due to the new behavior of the --text and --text-summary options. At first, it seemed that having an option with an optional argument was impossible, but I was able to do that anyway, and it spured a PR to the Symfony Docs too!