Summary

In this chapter, we covered the hot topic of serverless computing. We explained the two meanings of serverless - eliminating the need to manage servers as well as deploying and running functions as a service. We explored in depth the aspects of serverless infrastructure in the cloud, especially in the context of Kubernetes. We compared the built-in cluster autoscaler as a Kubernetes-native serverless solution to the offerings of other cloud providers, like AWS EKS+Fargate, Azure AKS+ACI, and Google Cloud Run. We then switched gears and dove into the exciting and promising Knative project, with its scale-to-zero capabilities and advanced deployment options. Then, we moved to the wild world of FaaS on Kubernetes.

We discussed the plethora of solutions out there and examined them in detail, including hands-on experiments with two of the most prominent and battle-tested solutions out there: OpenFaaS and Fission. The bottom line is that both flavors of serverless computing...