Ask HN: Best-architected open-source business applications worth studying?
Nginx and Git.<p>Nginx has a lot of respect on the market for handling high concurrency as well as exhibiting high performance and efficiency.<p>I don't even have to speak about the Git architecture. It speaks plainly for itself.<p>There's a series of books called The Architecture of Open Source Applications that does justice to this topic<p><a href="http://aosabook.org/en/index.html" rel="nofollow">http://aosabook.org/en/index.html</a>