[sprocketonline]

Not a book, but Ayende's blog series on Database Building 101 is a great starting point covering a lot of the issues and opinion from an active storage engine designer. https://ayende.com/blog/posts/series/175041/database-buildin...

In other series he also covers Voron, his alternative to Microsoft Esent engine. https://ayende.com/blog/posts/series/175074/voron-internals