Serverless Functions, Made Simple.
OpenFaaS® makes it simple to deploy both functions and existing code to Kubernetes
Anywhere
Avoid lock-in through the use of Docker. Run on any public or private cloud.
Any code
Build both microservices & functions in any language. Legacy code and binaries.
Any scale
Auto-scale for demand or to zero when idle.
Understand the value of Serverless
In Serverless For Everyone Else, you'll gain a working knowledge of the value and use-cases of serverless functions. You'll then build your own with Node.js and learn how to secure and monitor them.
Run your code anywhere with the same unified experience.
Bring your laptop, your own on-prem hardware or create a cluster in the cloud. Let Kubernetes do the heavy lifting enabling you to build a scalable, fault-tolerant event-driven serverless platform for your applications.
You can try out OpenFaaS in 60 seconds or write and deploy your first Python function in around 10-15 minutes. From there you can take the OpenFaaS workshop, a series of tried-and-tested self-paced labs which teach you everything you need to know about functions — and more.
Functions Store
An ecosystem for sharing, reusing and collaborating on functions
Templating system
Reduce boilerplate code, share code in the templates store
Functions or Microservices
Deploy existing microservices using Express.js, Sinatra, ASP.NET Core or simplify with functions.
Simple, powerful functions from anywhere.
Whether you want to use Go, Java, Python, C#, Ruby - Express.js, Django, ASP.NET Core, even binaries like ffmpeg, ImageMagick, or anything else. We have you covered with the template store.
$ faas-cli new --lang java11 java-fn
Handler.java
package com.openfaas.function;
import com.openfaas.model.IHandler;
import com.openfaas.model.IResponse;
import com.openfaas.model.IRequest;
import com.openfaas.model.Response;
public class Handler implements com.openfaas.model.IHandler {
public IResponse Handle(IRequest req) {
Response res = new Response();
res.setBody("Hello, world!");
return res;
}
}$ faas-cli template store pull golang-http
$ faas-cli new --lang golang-http golang-http-fn
handler.go
package function
import (
"fmt"
"net/http"
"github.com/openfaas-incubator/go-function-sdk"
)
// Handle a function invocation
func Handle(req handler.Request) (handler.Response, error) {
var err error
message := fmt.Sprintf("Hello world, input was: %s", string(req.Body))
return handler.Response{
Body: []byte(message),
StatusCode: http.StatusOK,
}, err
}$ faas-cli new --lang python3 python3-fn
main.py
def handle(req):
"""handle a request to the function
Args:
req (str): request body
"""
return req$ faas-cli new --lang node12 javascript-fn
handler.js
"use strict"
module.exports = async (event, context) => {
const result = {
status: "Received input: " + JSON.stringify(event.body)
};
return context
.status(200)
.succeed(result);
}$ faas-cli template store pull bash-streaming
$ faas-cli new --lang bash-streaming bash-fn
handler.sh
#!/bin/sh
for i in $(seq 1 100)
do
sleep 0.001
echo "Hello" $i
done$ faas-cli new --lang dockerfile ruby
Dockerfile
FROM ruby:2.7-alpine3.11
WORKDIR /home/app
COPY . .
RUN bundle install
CMD ["ruby", "main.rb"]OpenFaaS Sponsors
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Start your Serverless Journey
Understand the use-cases for functions and learn at your own pace with the OpenFaaS Manual: Serverless For Everyone Else.
Run OpenFaaS in Production
OpenFaaS Pro is a commercially licensed version of OpenFaaS meant for production use.
Get the world's best support, work with the founders and unlock features.
