Both of those are fantastic, data intensive in particular I think is the best book I have ever read from O'Reilly. Glad to hear this one is as good.

If you wanted to build your own database (to learn how), is Database Internals the better book, or DDIA?

I'm currently writing a book for PragProg called Building Distributed Services with Go (though it mostly applies to other languages too) that's walks you through building a distributed database from scratch. You can sign up on this mailing list to know when it's available: https://travisjeffery.us4.list-manage.com/subscribe?u=1e3ff7...

Looking forward to it. Do you have any idea when this might become a Beta book on PragProg? Cheers.

Awesome. Hopefully within a month or two.

Do you have an experience or learning along writing? (also a legit/common way)

Yeah---each chapter begins with background on the chapter's topic, some theory, covers how and where you'd use what's we're talking about in the chapter and then we use it to build a part of the project we're building throughout the book. For example, in the consensus chapter we talk about what problems it solves and how you can use it in your projects,and then we implement Raft in the service for leader election and replication.

Awesome. Just signed up. Any ideas on what the pricing will be like?

Not sure, haven't gotten to that yet. Just from looking at the prices of other PragProg books somewhere around $21.95-24.95.

Is it still worth (materialistically) writing a book considering (see PRICING section) http://fabiensanglard.net/gebbdoom/ ?

I'm not doing it for the money. Writing a worthwhile book is about the least efficient way to make money.

Not sure about how least efficient though, indirectly it will help a lot I believe.

This one, it covers all the aspects deeper. The next book, if you want to go deeper, can be an upcoming 4th edition of Principles of Distributed Database Systems https://www.springer.com/gp/book/9783030262525