Serverless Kotlin with App Engine

on YouTube ↗51m

" summary

Shows Kotlin running on App Engine’s new Java 8 OpenJDK sandbox with the Java security manager removed, letting Spring Boot, Dropwizard and JVM languages run normally. Demonstrates a Kotlin servlet and a Spring Boot app using Cloud Datastore with an incrementing counter (works, deploys in ~40–60s) and an Android Kotlin client using Kotlin Android synthetic views calling the backend. Uses the local SDK for testing and shows autoscaling behavior that scales 0→200 instances during load.

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" chapters (15)

1. 0:00Start
2. 3:23Explicit nullability
3. 5:22Data classes (1/2)
4. 6:29Named and default parameters
5. 7:50Extension functions and operator overloading
6. 9:23Raw strings and interpolation (2/2)
7. 11:12Assignment should not be an expression
8. 12:18Testing for equality is commoner than for identity
9. 16:28Documentation should be readable in the source code
10. 18:45Assumes you're using an IDE
11. 20:31Google App Engine
12. 23:55Java 8 Standard App Engine Runtime
13. 26:32The new App Engine Security Sandbox
14. 27:17Frameworks running in the new sandbox
15. 28:11Kotlin App Engine Hello World

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