How to implement application architecture on clusters?

Question

PHP

Recently I saw an article on Habré , I wanted to do something similar. I have been wanting to explore this topic for a long time. But I don’t have any ideas what this can be done, who knows, please tell me what kind of project that will not be too difficult to implement and at the same time will help to fully work with clusters to evaluate all the advantages.
PS all this is just4fan