Book Image

.Go Programming Blueprints - Second Edition

By : Mat Ryer
Book Image

.Go Programming Blueprints - Second Edition

By: Mat Ryer

Overview of this book

Go is the language of the Internet age, and the latest version of Go comes with major architectural changes. Implementation of the language, runtime, and libraries has changed significantly. The compiler and runtime are now written entirely in Go. The garbage collector is now concurrent and provides dramatically lower pause times by running in parallel with other Go routines when possible. This book will show you how to leverage all the latest features and much more. This book shows you how to build powerful systems and drops you into real-world situations. You will learn to develop high quality command-line tools that utilize the powerful shell capabilities and perform well using Go's in-built concurrency mechanisms. Scale, performance, and high availability lie at the heart of our projects, and the lessons learned throughout this book will arm you with everything you need to build world-class solutions. You will get a feel for app deployment using Docker and Google App Engine. Each project could form the basis of a start-up, which means they are directly applicable to modern software markets.
Table of Contents (13 chapters)

Deploying apps with multiple modules


Deploying the application is slightly more complicated with multiple modules, as the dispatcher and index files each require a dedicated deployment command.

Deploy the modules with the following:

goapp deploy default/app.yaml api/app.yaml web/app.yaml

Once the operation has finished, we can update the dispatcher using the appcfg.py command (which you must ensure is in your path you'll find it in the Google App Engine SDK for the Go folder we downloaded at the start of the chapter):

appcfg.py update_dispatch .

Once the dispatch has been updated, we can push the indexes to the cloud:

appcfg.py update_indexes -A YOUR_APPLICATION_ID_HERE ./default

Now that the application is deployed, we can see it in the wild by navigating to our appspot URL; https://YOUR_APPLICATION_ID_HERE.appspot.com/.

Note

You might get an error that says The index for this query is not ready to serve. This is because it takes Google Cloud Datastore a little time to prepare things on the...