Site Reliability Engineering: How Google Runs Production Systems

I think learning about how your applications will be supported once live is important so always recommend the Google SRE book. I think the most important chapter is on Simplicity of your build and code. Definitely worth a read

If you maintain any software system in a production environment, I think its topics are pretty relevant!

This is great, thanks! +1 for both data intensive apps and Google SRE books. The other two I haven’t checked out yet