spring-kotlin-jdbi

playground for spring-boot, kotlin , jdbi

status

• under development

build and run playground (docker)

    $ make -C rest-api app.compose.up

• browse to: http://localhost:8080/swagger-ui.html

build

    $ make -C rest-api app.build

run local db (docker)

    $ make -C rest-api db.local.up

run from Intellij

VM options: -Dspring.profiles.active=local
Environment variables: APP_DB_URL=localhost:5432/app

    # make sure, you have our db running on that port, e.g.:
    $ make -C rest-api db.local.up

This example project is based on ...

• https://github.com/making/spring-boot-db-samples
• https://www.sitepoint.com/combining-spring-boot-and-jdbi/
• https://github.com/dhagge/spring-boot-jdbi-seed
• https://github.com/oldpatricka/spring-boot-jdbi

Whats wrong with orm, jpa, hibernate and in-memory h2-db these days ?

There is no silver bullet. It's born in a world of single-instance big fat application servers. It hardly fits into a modern world of:

• functional programming: e.g. immutable threadsafe pojos / data classes
• CQRS and eventsourcing
• horizontal scaling of polyglot microservices

Make up your mind ...

• How hibernate ruined Monica's career: https://www.toptal.com/java/how-hibernate-ruined-my-career

• Why do I hate hibernate: https://de.slideshare.net/alimenkou/why-do-i-hate-hibernate-12998784

• ORM is an antipattern: http://seldo.com/weblog/2011/08/11/orm_is_an_antipattern

• Opinionated JPA: https://leanpub.com/opinionatedjpa/read

• Lightweight ORM, do it yourself: https://blog.philipphauer.de/do-it-yourself-orm-alternative-hibernate-drawbacks/

• Don't use H2 db for testing, use docker: https://blog.philipphauer.de/dont-use-in-memory-databases-tests-h2/

• https://www.sitepoint.com/combining-spring-boot-and-jdbi/