Sorry, link was wrong, here is the correct link - https://blog.bytebytego.com/p/free-system-design-pdf-158-pages?r=a1ck9
Written by javinpaul
I am Java programmer, blogger, working on Java, J2EE, UNIX, FIX Protocol. I share Java tips on http://javarevisited.blogspot.com and http://java67.com