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The Event sourcing, CQRS coffee shop

The purpose of this project is to explore how to implement Event sourcing and CQRS.

Running

gradle bootRun

# run with debug
gradle bootRun --debug-jvm

Libraries

http://projects.spring.io/spring-boot/
https://projectlombok.org - Spice up your java: Automatic Resource Management, automatic generation of getters, setters, equals, hashCode and toString, and more!

Profiles

dev - properties are loaded from application.yaml test - properties are loaded from application-test.yaml
preprod - properties are loaded from application-preprod.yaml
production - properties are loaded from application-production.yaml

Helper scripts to run the app with different profiles

/bin/runTest.sh - packages the app and runs with the test profile activated /bin/runPrepod.sh - packages the app and runs with the preprod profile activated /bin/runProd.sh - packages the app and runs with the prod profile activated

Override props

You can override props by creating a /application.yaml this file is .gitignored

Logging

@Slf4j lombrok logback fluent When to use what level? Error Warning Info debug

Testing

To run an individual test:

$ gradle test -Dtest.single=PropTest

To debug a test:

$ gradle test -Dtest.debug=true -Dtest.single=DemoSpec

Deployment

# create executable jar see <project-home>/bin/run*.sh for example 
gradle bootRepackage

References

https://blog.sebastian-daschner.com/entries/event_sourcing_cqrs_video_course