133: Dependency Injection and Service Locators in a Kotlin world with Danny Preussler

A hotly debated topic at the moment is the use of a library like Dagger for dependency injection in the world of Kotlin. In this episode, we talk to Danny Preussler. Danny's a pro who's been around from the Java 1.0 days! He helps trace the history of dependency injection in Java all the way to today, in a Kotlin world where there exists alternatives like Koin and Kodine.

We dive into how some of these use a Service Loader/Locator pattern and the subtle differences with dependency injection. Listen on for an action packed episode.

Show Notes

• Danny's slides (DI in a Kotlin world) talk
• Koin
• Toothpick
• how to pronounce reified

Service Locators vs Dependency Injection

Your application is aware it's using a Service Locator, but your application should be totally un-aware that it's using a Dependency Injection Container.

• SO post on the difference between DI & SL pattern
• Martin Fowler's post on DI, IOC, SL
• Caster.IO (paid) course by DF on setting up testing with Dagger 2 and Espresso
• Mark Seeman on Service Locators being an anti-pattern

Sponsors

• Bitrise - Bitrise is your mobile continuous integration and delivery for your whole team, with dozens of integrations for your favorite services.

Contact

• @fragmentedcast

• @preusslerberlin

• @donnfelker and donnfelker (on Instagram)

• @kaushikgopal and kaushikgopal (on Instagram)