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"Serverless" functions allow users to easily create services from source code without dealing with the packaging, deployment, scaling, etc.
Fission is a serverless function framework built on Kubernetes. Users write functions and map them to HTTP routes. They don't have to deal with container images, registries or even learn Kubernetes in much detail.
Functions can be associated with HTTP routes, events, or timers. Functions consume CPU and memory resources only when running; they are started on-demand and killed when idle. Fission makes on-demand function loading very fast, by keeping an idle pool of containers running, in effect creating a distributed "threadpool".
Fission is useful for:
* Creating web app backends or REST APIs
* Implementing webhooks
* Writing event handlers
We'll demo the creation of a simple web app using Fission functions in Python.
We'll also show how tying together Kubernetes Watches and Fission functions make it very easy to write custom behavior triggered by changes to arbitrary resources on Kubernetes.