Introduction to Serverless Golang with OpenFaaS [video]

I was joined by Taylor Dolezal for this live stream and was surprised to learn that Taylor has not only tried OpenFaaS before, but used it in two jobs - including at Disney.

After the intro, we talk a bit about Go features like testing and newer features like generics, before going into a bit of a deep dive coding session, building up functions from scratch in Golang.

The functions built with OpenFaaS are actually containers with a HTTP server inside, so they can be deployed to Kubernetes, Cloud Run or Knative in a similar way. They would probably also work with fly (but I haven't tried that yet)

The "workload" definition is HTTP on port 8080 and a health check (configurable) https://docs.openfaas.com/reference/workloads/

For folks starting out with FaaS and not ready to go full-on K8s, faasd might be a good option to explore - https://github.com/openfaas/faasd - it has containerd and CNI (just like K8s) but no clustering so it's faster and has a sub-second cold-start.