How to write highly loaded and scalable Rails applications?

Question

Ruby on Rails

Please advise books and materials on this subject. Interested in everything - from setting up servers and databases, ending with writing code that works quickly, possibly with inserts from other languages.

Answer 1

Try starting here with The Architecture of Open Source Applications series of books , which, among other things, discuss the nginx device, which cannot be called slow for certain tasks.
For the design of HA and Highload, the language as such does not matter, the choice of architecture is important. This literature can tell you many interesting solutions with specific examples with answers why it was done that way.

Answer 2

Rails is not about fast code, but about fast development. Write in pure ruby, well, the event machine can make a hell of a lot of requests per minute.

Answer 3

starting with setting up servers and databases

These are extreme entities and should not be the responsibility of one person.
Decide for yourself - you want to write code or deal with configuring and maintaining servers.
Books I will not prompt because really designated criteria cover the weight of the directions of IT.