Chanwit Kaewkasi - Docker for Serverless Applications

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Chanwit Kaewkasi is an assistant professor at the School of Computer Engineering, Suranaree University of Technology, Thailand. He started contributing code to the Docker Swarm project in its early day around 0.1. Later in 2016, he led the Swarm2K project together with contributors around the world to form the largest Docker Swarm cluster. Beside teaching and doing research in the field of software engineering, he provides consulting to several companies to help them adopt Docker, microservices, and FaaS technologies.

He currently serves the Docker community as a Docker Captain.

Fabrizio Soppelsa works as a software engineer for Samsung, in the Next Platform and Containerization team. He spends most of his time integrating cloud components and making them perform faster. Hes also an active Docker and Kubernetes contributor, and a Docker community leader.
He has published Native Docker clustering with Swarm for Packt.

In his spare time, he enjoys spending time with Anna, playing Go, traveling and taking care of his Russian canary Rambo.

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The container technology is very mature today. Docker, the software package that helps popularizing containers, is now being used by hundreds of thousands of developers as their day-to-day DevOps tool. I would say that Docker, the container engine, has now become a boring piece of software. For an infrastructure-level software package, boring means high quality and stability. I use it every day and I know you all use it as a part of your tool chain too. But we no longer feel excited when a new version of Docker is released. Just like what we feel to the releases of Linux kernels. With this feeling , the golden age of container has just recently passed, in my opinion.

The rise of Docker was in 2013. Its Renaissance was during 2014 - 2016. Many orchestration engine races between Docker Swarm and Kubernetes were at their peaks in 2016. One of them, the Swarm2K project, was my once-in-a-lifetime event. Docker later had an announcement to also support Kubernetes in 2017. The race ended there.

A couple of days ago, in March 2018, just before publishing this book, its founder, Solomon Hykes, left Docker Inc. Docker, the company, has been slowly and strongly moving from the startup world towards the enterprise business. What does this mean to us? E nterprise means stability, but startup means adventure. Let's move onto the new adventure, the post containerthe serverless era.

What we will be talking about in this book is serverless. It is the natural evolution next to containers and microservices, in the different ways. First, a Docker container becomes a deployment unit for a function, a primitive unit-of-work in the Function-as-a-Service or FaaS architecture. Second, the microservices architecture has been gradually evolving to the FaaS architecture. FaaS could actually be anywhere on-premises or in the cloud. When the whole FaaS stack is managed by cloud providers, it becomes completely serverless.

But there will be something in between. Something is called the hybrid serverless FaaS architecture