It might be a good read to see how other people are solving a problem. But I wouldn't use it directly. After looking at the code for a few minutes I noticed this: https://github.com/Viveckh/Veniqa/blob/develop/shopping-serv...

It makes sense that awkwardly hard coded hacks like this will exist in a startup's piece of software. But it's possibly full of similar things that might take a lot of effort to find, much less fix.

When money is running out and deadlines are looming its hard to have the discipline to not do stuff like this, and a startup's goal tends not to really be to build open source software for everyone to use anyways, so I'm not surprised something like this might exist.