Springboot and Ballerina

A sample code base which touches key features of each technology. The sample is based on a simple API written for a social-media site which has users and associated posts. Following is the high level component diagram.

Following are the features used for the implementation

1. Configuring verbs and URLs
2. Error handlers for sending customized error messages
3. Adding constraints/validations
4. OpenAPI specification for Generating API docs
5. Accessing database
6. Configurability
7. HTTP client
8. Resiliency - Retry
9. Docker image generation
10. Tracing (Couldn’t get it to work with Spring boot Feign client)

Setting up each environment

Spring boot

You can use the below docker compose commands.

1. docker compose -f springboot-docker-compose-db.yml up
2. docker compose -f springboot-docker-compose.yml up

Spring boot (Reactive)

You can use the below docker compose commands.

1. docker compose -f springboot-reactive-docker-compose.yml up

Ballerina

You can use the below docker compose commands.

1. docker compose -f ballerina-docker-compose-db.yml up
2. docker compose -f ballerina-docker-compose.yml up

Try out

Spring boot (Default and Reactive)

• To send request open springboot-social-media.http file using VS Code with REST Client extension
• Zipkin URL - http://localhost:9411/zipkin/

Ballerina

• To send request open ballerina-social-media.http file using VS Code with REST Client extension
• Jaeger URL - http://localhost:16686/search