It's hard to get started on Spark without touching Scala. Scala seems to provide Java with a lot of "functional-programming-like" syntactic sugar. Here are some...
Arrays are divided into a mutable Array ArrayBuffer and an immutable Array. An Arrayis an immutable array. By immutable, an object's reference cannot be changed....
In the GrowingIO server development, we use GRPC for data communication between micro-services. Each project that provides a service defines its own PROTOBUF message format,...
Scala supports pattern matching mechanisms that replace SWITH statements, perform type checking, and support for destructor expressions. Scala doesn't support swith, you can use pattern...
Gatling is a powerful load testing tool designed for ease of use, high maintainability and high performance. Out of the box, Gatling's excellent support for...