Spring Boot JPA

A Spring Cloud On Kubernetes Example

Features

• micrometer (for gathering metrics)
• actuator
• Prometheus
• Grafana
• Postgresql Sakila DB

Built With

• SpringBoot - The framework used
• Maven - Dependency Management
• Docker - Used to containerise the application
• Kubernetes - Used to generate a scalable cloud microservice
• DB Documentation - MySQL's Sample Salika (DVD Rental) Database

Getting Started

You will need:

• Docker desktop
• Docker-Kubernetes or Minikube (Kubernetes Dashboard or similar)
• Helm 3
• kubectl
• superbenchmarker choco install superbenchmarker

Prerequisites

uses aballaci/springboot-sakila-jpa:v3 in Dockerhub

you can build your own version:

docker build -t namespace/image-name:version .

docker push namespace/image-name:version

Set first the namespace in the current context -- the services should be installed in the same namespace.

kubectl config set-context --current --namespace=default

install prometheus:

helm install prometheus ./prometheus

install the postgres persistent volumes that populate the database:

kubectl create -f persistent-volume.yml

install postgres

helm install postgres postgresql/

install grafana:

helm upgrade grafana ./grafana/

create the prometheus datasource:

url: http://prometheus-server

access: Server(default)

install the dashboard in grafana importing it from grafana_dashboard_spring-boot-statistics_rev2.json

Installing

kubectl apply -f springboot-jpa.yaml

or for local development

skaffold dev

to make the builds faster use a nexus docker image as proxy... more on that later...

Metrics: http://localhost:8080/actuator/metrics

Metrics in prometheus format: http://localhost:8080/actuator/prometheus

Grafana dashboard:

Running the tests

`Run the load tests: sh load-test.sh

• Actors - http://localhost:{port}/actors
• Films - http://localhost:{port}/film
• Actorinfo - http://localhost:{port}/actorinfo
• Custom Query - http://localhost:{port}/actorinfo/search/findByActorsLastName?name=GUINESS

Versioning

I use SemVer for versioning. For the versions available, see the tags on this repository.

Authors

• Armand Ballaci

License

This project is licensed under the MIT License - see the LICENSE.md file for details