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)

Orchestrating with docker-compose

We have been running the servers for Librarian and Concierge on our system's localhost at hardcoded network port values. We haven't faced any issues with it so far. However, when we consider that we will be running three instances of Librarian, requiring to connect all of them to Concierge and be able to easily start and monitor the servers, we realize that there are a lot of moving parts. This can lead to unnecessary errors while operating the system. In order to make our life easy, we can rely on docker-compose, which will take care of all this complexity for us. All we have to do is define a configuration YAML file called docker-compose.yaml that will provide the following information:

  • Identify the services we want to run together
  • The location or name of the respective Dockerfile or Docker image for every service defined in the YAML...