Andrew Gerrand

10 November 2013

Today marks the fourth anniversary of Go as an open source project.

Rather than talk about our technical progress (there'll be much to talk about when we release Go 1.2 in a couple of weeks) we thought we would instead take this occasion to look at how the Go community has grown.

Let's start with a chart:

This chart shows the growth of Google searches for the term "golang" over the past four years. Notice the knee in the curve around March 2012, when Go 1.0 was released. If these searches are a decent proxy for interest, then it's clear that interest in Go has grown remarkably since launch, and particularly so in the last 2 years.

But where is the interest coming from?

The open source community has embraced Go, with our community wiki listing hundreds of Go projects. Some popular ones:

Docker is a tool for packaging and running applications in lightweight containers. Docker makes it easy to isolate, package, and deploy applications, and is beloved by system administrators. Its creator Solomon Hykes cited Go's standard library, concurrency primitives, and ease of deployment as key factors, and said "To put it simply, if Docker had not been written in Go, it would not have been as successful."

Packer is a tool for automating the creation of machine images for deployment to virtual machines or cloud services. Its author, Mitchell Hashimoto, is now working on another Go project, serf, a decentralized discovery service. Like Docker, these projects help with management of large-scale, cluster-based services.

Bitly's NSQ is a realtime distributed messaging platform designed for fault-tolerance and high-availability, and is used in production at bitly and a bunch of other companies.

Canonical's JuJu infrastructure automation system was rewritten in Go. Project lead Gustavo Niemeyer said "It's not a single aspect of Go that makes it a compelling choice, but rather the careful organization of well-crafted small pieces."

The raft package provides an implementation of the Raft distributed consensus protocol. It is the basis of Go projects like etcd and SkyDNS.

Other popular projects include biogo, the Gorilla Web Toolkit, groupcache, Mozilla's heka, the kv and ql lightweight storage systems, and the Sky behavioral database.

But this is just the tip of the iceberg. The number of high-quality open source Go projects is phenomenal. Prolific Go hacker Keith Rarick put it well: "The state of the Go ecosystem after only four years is astounding. Compare Go in 2013 to Python in 1995 or Java in 1999. Or C++ in 1987!"

Businesses are enjoying Go, too. The Go Users wiki page lists dozens of success stories (and if you use Go, please add yourself to it). Some examples:

CloudFlare built their distributed DNS service entirely with Go, and are in the process of migrating their gigabytes-per-minute logging infrastructure to the language. Programmer John Graham-Cumming said "We've found Go to be the perfect match for our needs: the combination of familiar syntax, a powerful type system, a strong network library and built-in concurrency means that more and more projects are being built here in Go."

SoundCloud is an audio distribution service that has "dozens of systems in Go, touching almost every part of the site, and in many cases powering features from top to bottom." Engineer Peter Bourgon said "Go demonstrates that the cruft that burdens other languages and ecosystems—stuff that developers have learned to deal with, often in anger—is simply not a necessary part of modern programming. With Go, I have a straightforward and non-adversarial relationship with my tools, from development to production."

The ngrok service allows web developers to provide remote access to their development environments. Its author Alan Shreve said that "ngrok's success as a project is due in no small part to choosing Go as the implementation language," citing Go's HTTP libraries, efficiency, cross-platform compatibility, and ease of deployment as the major benefits.

Poptip provides social analytics services, and product engineer Andy Bonventre said "What started as an experiment in writing a single service in Go turned into moving almost our entire infrastructure over to it. What I love about Go the most is not necessarily the features of the language, but the focus on tooling, testing, and other elements that make writing large applications much more manageable."

Music collaboration startup Splice chose to build their service with Go. Co-founder Matt Aimonetti said "We seriously studied and considered many programming languages, but Go's simplicity, efficiency, philosophy and community won us over."

And, of course, engineering teams across Google are moving to Go. Engineer Matt Welsh recently shared his experience rewriting a large production service in Go. Other notable public examples include YouTube's vitess project and dl.google.com. We hope to share more stories like these soon.

In September 2012, Apcera CEO Derek Collison predicted that "Go will become the dominant language for systems work in [Infastructure-as-a-Service], Orchestration, and [Platform-as-a-Service] in 24 months." Looking at the list above, it's easy to believe that prediction.

So how can you get involved? Whether you're a seasoned Go programmer or just Go-curious, there are many ways to get started in the Go community:

The Go team has been amazed by the growth of the Go community over the past four years. We are thrilled to see so many great things being built with Go, and deeply grateful to work with our wonderful and dedicated contributors. Thank you, everyone.

Here's to four more years!