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Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. With Fission, developers can easily create and deploy serverless functions that can be triggered by a variety of events, such as HTTP requests, messages from a message queue, or scheduled tasks.

Fission provides a simple, easy-to-use interface for developers to create serverless functions in their language of choice, without having to worry about the underlying infrastructure. The framework also offers automatic scaling, so functions can scale up or down based on demand, without any additional configuration.

Fission operates onjust the code: Docker and Kubernetes areabstracted away under normal operation, though you can use both toextend Fission if you want to.

Fission is extensible to any language; the core is written in Go, andlanguage-specific parts are isolated in something calledenvironments (more below). Fission currently supports NodeJS, Python, Ruby, Go,PHP, Bash, and any Linux executable, with more languages coming soon.

• Table of Contents
  • Performance: 100msec cold start
  • Kubernetes is the right place for Serverless
  • Getting Started
  • Learn More
  • Contributing
  • Who is using Fission?
  • Sponsors
• License

Fission maintains a pool of "warm" containers that each contain asmall dynamic loader. When a function is first called,i.e. "cold-started", a running container is chosen and the function isloaded. This pool is what makes Fission fast: cold-start latenciesare typically about 100msec.

We're built on Kubernetes because we think any non-trivial app willuse a combination of serverless functions and more conventionalmicroservices, and Kubernetes is a great framework to bring thesetogether seamlessly.

Building on Kubernetes also means that anything you do for operationson your Kubernetes cluster — such as monitoring or logaggregation — also helps with ops on your Fission deployment.

# Add the stock NodeJS env to your Fission deployment  $ fission env create --name nodejs --image ghcr.io/fission/node-env# Create a function with a javascript one-liner that prints "hello world"  $ fissionfunctioncreate --name hello --env nodejs --code https://raw.githubusercontent.com/fission/examples/master/nodejs/hello.js# Run the function.  This takes about 100msec the first time.  $ fissionfunctiontest --name hello  Hello, world!

• UnderstandFission Concepts.
• See theinstallation guide for installing and running Fission.
• You can learn more about Fission and get started fromFission Docs.
• To see Fission in action, check out theFission Examples Repo.
• See thetroubleshooting guide for debugging your functions and Fission installation.

Check out thecontributing guide.

• Fareye
• Apple
• iQuanti
• A large telecom CSP
• Gadget
• CinnamonAI
• Armo
• The Social Audience
• KubeML
• Unilever
• BD
• Biofourmis
• Babylon

The following companies, organizations, and individuals support Fission's ongoing maintenance and development. If you are using/contributing to Fission, we would be happy to list you here, please raise a Pull request.

Fission is licensed under the Apache License 2.0 - see theLICENSE file for details