Book Image

Distributed Computing with Go

By : V.N. Nikhil Anurag
Book Image

Distributed Computing with Go

By: V.N. Nikhil Anurag

Overview of this book

Distributed Computing with Go gives developers with a good idea how basic Go development works the tools to fulfill the true potential of Golang development in a world of concurrent web and cloud applications. Nikhil starts out by setting up a professional Go development environment. Then you’ll learn the basic concepts and practices of Golang concurrent and parallel development. You’ll find out in the new few chapters how to balance resources and data with REST and standard web approaches while keeping concurrency in mind. Most Go applications these days will run in a data center or on the cloud, which is a condition upon which the next chapter depends. There, you’ll expand your skills considerably by writing a distributed document indexing system during the next two chapters. This system has to balance a large corpus of documents with considerable analytical demands. Another use case is the way in which a web application written in Go can be consciously redesigned to take distributed features into account. The chapter is rather interesting for Go developers who have to migrate existing Go applications to computationally and memory-intensive environments. The final chapter relates to the rather onerous task of testing parallel and distributed applications, something that is not usually taught in standard computer science curricula.
Table of Contents (11 chapters)

Gotchas when using goroutines

By this point, we should have developed a good understanding of how goroutines and the scheduler works. Let's now look at a few things that may catch us by surprise while working with goroutines.

Single goroutine halting the complete program

We know that goroutines run across multiple threads and multiple cores. So what happens when we have a panic in one of the threads? Here is an example that would let us simulate such a situation. We will create a lot of similar goroutines, whose sole purpose is to take a number and divide it by itself after subtracting 10 from the denominator. This will work fine for the majority of cases, except when the number is 10. The following code implements the...