Skip to content

Latest commit

 

History

History
75 lines (51 loc) · 1.17 KB

README.md

File metadata and controls

75 lines (51 loc) · 1.17 KB
Raw

Kube Spring Fibonacci

Containerized microservice that exposes an endpoint for calculating the n-th sequence of fibonacci.

This is a project for testing purposes.

Prerequisites

  • Java 11
  • Minikube
  • Docker

Microservice

Features

  • Microservice developed using Spring Boot
  • Fibonacci sequence calculated using fast doubling method

Run

> ./gradlew bootRun

Test

> curl http://localhost:8000/fib?n=1
1

> curl http://localhost:8000/fib?n=10
55

> curl http://localhost:8000/fib?n=72
498454011879264

Containerization

Features

  • Multi-stage Dockerfile
  • Docker compose file included
  • Kubernetes with Horizontal Pod Autoscaler

Docker image build

> docker build -t <docker-image-name> .

Docker container run

> docker compose up

Kubernetes deploy

Please enable metrics-server minikube addon in order to allow HPA to work properly.

> minikube addons enable metrics-server
> minikube start
> kubectl apply -f fib.yaml
> minikube tunnel

Kubernetes manual scale

> kubectl scale --replicas=<expected_replica_num> deployment kube-spring-fibonacci-deployment