Some of us at DZone develop scientific/engineering/research code. And to people like us, an elegant and simple mathematical function can be a powerful tool. We might not use it today but it's nice to have in the toolbox!
Too many programmers think SQL is a bit of a beast. It is one of the few declarative languages out there, and as such, behaves in an entirely different way from imperative, object-oriented, or even functional languages (although, some say that SQL is also somewhat functional).
Google recently open sourced gRPC, which adds remote procedure calls on top of Protobufs, including code generation and serialization that works with multiple languages.
Learn all about transaction management using Spring, and explore what transaction management is, how to effectively tackle this in Spring, and various tips.