Learn OPENFAAS with Real Code Examples

Functions run inside containers

API Gateway routes HTTP requests to functions

Prometheus monitors function metrics

Kubernetes or Docker Swarm handles orchestration

Event triggers invoke functions asynchronously or synchronously

Event (HTTP, queue, cron) triggers function

Gateway routes event to containerized function

Function executes logic

Optional response returned via HTTP or message queue

Metrics collected and scaling adjusted automatically

Serverless FaaS

Event-driven microservices

Containers as compute units

Kubernetes/Docker orchestration

Metrics-based auto-scaling

Event-driven microservices

CI/CD automation pipelines

IoT and edge workloads

Serverless data processing

Webhooks and cloud integrations

Serverless functions as containers

Event-driven architecture

Simplicity and developer productivity

Cloud-agnostic and portable

Autoscaling and scale-to-zero

Configure replicas and scaling rules in stack.yml

Use Prometheus metrics to trigger auto-scaling

Enable scale-to-zero for idle functions

Distribute functions across Kubernetes nodes

Use multiple gateways for high availability

Move functions from AWS Lambda or Azure Functions to OpenFaaS

Adapt function code for Docker containerization

Update triggers to supported OpenFaaS sources

Refactor deployment using stack.yml

Test functions locally before production deployment