Kotlin Weekly (Articles)

Compose Multiplatform 1.12.0 Released

Sun, 30 Aug 2026 00:00:00 GMT

JetBrains has rolled out version 1.12.0, featuring an experimental MCP server for AI coding agents in Compose Hot Reload, automatic font fallback for web targets, and a v2 API providing finer control over desktop window and dialog states.

JOOQ code from Flyway migration, with no database

Sun, 30 Aug 2026 00:00:00 GMT

A guide on using jOOQ's DDLDatabase to generate code directly from Flyway SQL migration files, eliminating the need for a live database or Docker in your CI pipeline.

Mockzilla: A compile safe mock server for your Mobile Apps

Sun, 30 Aug 2026 00:00:00 GMT

An on-device, compile-safe mock HTTP server for Android, iOS, Flutter, and KMP backed by Ktor that ties mock responses to your actual data models and offers live runtime control via mobile and desktop companion UIs.

The Uninvited Guest: How One Third‑Party Line Was Quietly Disabling R8 for Our Whole App

Sun, 30 Aug 2026 00:00:00 GMT

A case study on identifying and fixing overly broad third-party ProGuard keep rules that silently disable R8 optimizations across an entire Android app, using Gradle's ignoreFrom to restore shrinking and significantly improve cold start times.

Kotlin DataFrame 1.0.0-rc01 is released

Sun, 23 Aug 2026 00:00:00 GMT

DataFrame 1.0.0 RC01 is available on GitHub. Check it out to see the list of goodies included.

Jaewoong Eum (skydoves) AmA on Reddit

Sun, 23 Aug 2026 00:00:00 GMT

Open-source magician Jaewoong Eum, AKA skydoves, participated in an AmA on Reddit. Check it out to see some of the interesting answers.

Show us your Compose Multiplatform app

Sun, 23 Aug 2026 00:00:00 GMT

The Kotlin team is collecting polished apps built with Compose Multiplatform, live in production or public beta. Selected apps may be featured on Kotlin and JetBrains websites, social media and in presentations, with a link back so people can discover them.

Klibs.io Grows to 4,200+ KMP Projects With Smarter Discovery and New AI Integrations

Sun, 23 Aug 2026 00:00:00 GMT

Viliam Sedliak highlights the expansion of the klibs.io catalog to over 4,200 Kotlin Multiplatform libraries, introducing advanced multi-target filtering alongside direct MCP server and AI integrations for coding agents.

Monads for Kotlin Developers

Sun, 23 Aug 2026 00:00:00 GMT

Francis Reynders demystifies monads for Kotlin developers by explaining how everyday idioms (such as nullable chains, List.flatMap, Result, and Arrow's typed errors) implement the same core sequencing pattern and laws without needing Haskell syntax.

Exploring Compose HTML for Server Side Rendering

Sun, 23 Aug 2026 00:00:00 GMT

Frederik Pietzko explores the potential of bringing Compose HTML to the JVM for server-side rendering, enabling backend developers to build type-safe, component-driven web UIs in Spring Boot and Ktor without relying on traditional string templates.

Changing my mind about React Native

Sun, 23 Aug 2026 00:00:00 GMT

A non typical article for a Kotlin newsletter, showcasing how native mobile and KMP developer Filip Wiesner reevaluates React Native by examining its underlying architecture, native UI abstraction model, and Hermes/JSI runtime performance compared to canvas-drawn multiplatform frameworks.

Signatures, be true: domain errors and functional handling in Kotlin

Sun, 23 Aug 2026 00:00:00 GMT

Sergey Chernov demonstrates how to make domain failures explicit in Kotlin function signatures using narrow sealed interfaces and Either types, moving error handling into compiler-verified contracts rather than hidden runtime exceptions.

Kotlin Weekly (Articles)

Compose Multiplatform 1.12.0 Released

JOOQ code from Flyway migration, with no database

Mockzilla: A compile safe mock server for your Mobile Apps

SPONSORED - Coroutines Mastery enrollment is open — the course price increases significantly after August 31

SPONSORED - Master advanced Jetpack Compose with a free cheat sheet for experienced Android developers today

The Uninvited Guest: How One Third‑Party Line Was Quietly Disabling R8 for Our Whole App

Kotlin DataFrame 1.0.0-rc01 is released

Jaewoong Eum (skydoves) AmA on Reddit

Show us your Compose Multiplatform app

Klibs.io Grows to 4,200+ KMP Projects With Smarter Discovery and New AI Integrations

Monads for Kotlin Developers

Exploring Compose HTML for Server Side Rendering

Changing my mind about React Native

Signatures, be true: domain errors and functional handling in Kotlin

SPONSORED - Coroutines Mastery enrollment is open - the course price increases significantly after August 31

SPONSORED - Master advanced Jetpack Compose with a free cheat sheet for experienced Android developers today