Build Your Own Redis With C/c++ ( 2nd Edition )
 

Build real-world software by coding a Redis server from scratch.
If you can build a Redis server, you can build almost any software beyond CRUD! Because it teaches you 3 fundamental skills
Network programming. The next level of programming is programming for multiple machines. Think HTTP servers, RPCs, databases, distributed systems.
Data structures. Redis is the best example of applying data structures to real-world problems. Why stop at theoretical, textbook-level knowledge when you can learn from production software?
Low-level C. C was, is, and will be widely used for systems programming and infrastructure software. It's a gateway to many low-level projects.
Why from scratch? A quote from Richard Feynman: "What I cannot create, I do not understand". You should test your learning with real-world projects!
Why a book? The real Redis project is a large code base built with lots of effort. The book distills the core concepts and guides you through small steps.