swaroop rath wrote:
a. How is the support for writing concurrency apps in Go? Does it have a package like java.util.concurrent
Far better than that; concurrency is built into the language itself! Goroutines make creating a concurrent process as simple as calling a function. And unlike threads, you can create thousands of concurrent goroutines and still maintain excellent performance. Go also includes channels which allow goroutines to communicate without relying on shared memory. Concurrency is a major selling point for Go.
swaroop rath wrote:
b. How easy or hard is it to create an application server in GO? Does it have something parallel to Tomcat, Apache, JBOSS etc
Easy! The standard "net/http" package includes a highly performant web server. There's one tutorial
here, and another in the last two chapters of Head First Go if you're looking for something more approachable.