Kotlin compiler plugins are amazing! ✅ Expressive syntax ✅ Compile-time checked ✅ Fast at runtime

Spring Boot 4 finally has a dedicated OpenTelemetry starter. No more pulling in actuator just for observability. Metrics, traces, and logs via OTLP out of the box. youtu.be/6_Y41z7OIv8

exoquery.com/blog/introdu... #kotlin #exoquery

Kotlin 2.3.0 is out! Check out the highlights of this release on the Kotlin blog. 👉 https://kotl.in/trf88y

Deep Dive in Java vs C++ Performance - johnnysswlab.com/deep-dive-in... #jvm

github.com/roastedroot/... - a pure #Java Protobuf library. It works by compiling protoc → WASM → JVM bytecode via Chicory, a fantastic WASM runtime for the #JVM.

👇ICYMI: In my new blog post I'm diving into the fundamentals of Durable Execution, which makes multi-step workflows, defined in code, persistent and resumable. Featuring #SQLite as an execution log as well as some of the goodies of modern #Java, such as virtual threads and scoped variables.

You know that Result::unwrap() from #Rust that just crashed Cloudflare? It wouldn't have happened on the JVM / #Java because its exceptions typically get caught. Just saying 🤷‍♂️

Looks like the @kotlinlang.org Amper build tool doc (dev version) is now available: jetbrains.github.io/amper/dev/ #kotlin #amper #jvm

Integrated ”JEP 516: Ahead-of-Time Object Caching with Any GC”! openjdk.org/jeps/516

KGP 2.2.20 has builtin support for generating and uploading GPG keys 🎉 I still remember when I had to do this 6 years ago. That was not fun. Very excited to see more tools for library authors! kotlinlang.org/docs/whatsne...

@vergauwensimon.bsky.social @kotlinlang.org I think the Ktor custom plugin doc need some refactorings - ktor.io/docs/server-.... We can now supply the config from file easily using the new config deserialization support and can make the config a lot simpler.

Compose UI in JetBrains IDE plugins next year confirmed #kotlin

Finding Order in the Mayhem: A Novel Concurrency Testing Tool that Improved the Kotlin Compiler https://lobste.rs/s/xkziyp ##testing ##kotlin

inside.java/2025/10/27/t... #jvm #java

This discussion on how Kotlin should expose time zone data is super thoughtful. Whatever the outcome I sure appreciate the process.

Most AI Agents are bleeding B.S.! And I meant bleeding Balance Sheets 💸 Economics doesn’t add up. Quality drops. Let’s focus on building better systems, not flashy demos! medium.com/@vadim.brili... #ai #aigents #genai #aieconomics #java #python #kotlin #llm #openai #claude #scalability #backend

Get your hands on the latest Project #Valhalla Early-Access Build, featuring Value Classes and Objects 🪓 #JDK26 #Java 👉 jdk.java.net/valhalla/

Need a handy list of the useful security enhancements in JDK 25? Look no further. https://social.ora.cl/6011AwAzz

There's still a bit of work to do, but I've just pushed out a release of my text to speech library with a new phonemizer and initial support for non-english languages. github.com/hcoles/voices #java

#JUnit 6.0.0 is released! ✨ Java 17 and Kotlin 2.2 baseline 🌄 JSpecify nullability annotations 🛫 Integrated JFR support 🚟 Kotlin suspend function support 🛑 Support for cancelling test execution ⏭️ New `--fail-fast` mode for ConsoleLauncher 🧹 Removal of deprecated APIs docs.junit.org/6.0.0/releas...

Some interesting @graalvm.org #native-image changes - "We are working on turning the native image generator into a native image itself and in this way completely disentangling it from the HotSpot VM. Together with Project Crema ..." - github.com/oracle/graal...

#jvm #leyden

🎉 The Ktor @opentelemetry.io integration doc is now live - ktor.io/docs/server-... #kotlin #otel

The Ktor roadmap for 2025–26 is here! Here's what we'll be working on: 🔶 API docs (OpenAPI is already in preview) 🔶 WebRTC Client with a Multiplatform API 🔶 Integration with Koog, the @jetbrains.com framework for building AI agents Explore what’s next 👇 blog.jetbrains.com/kotlin/2025/...

Java 25 / JDK 25: Features since the previous long-term support (LTS) release: openjdk.org/projects/jdk... #Java25 #JDK25 #OpenJDK #Java

Awesome... JEP 517: HTTP/3 for the HTTP Client API has merged into the #JDK mainline - github.com/openjdk/jdk/...

📢 Kotlin DataFrame 1.0.0-Beta3 is out! This update brings Parquet and DuckDB support, better compile-time schema tracking via the Compiler Plugin, and a big refresh of docs and examples. Read the full release notes 👇 kotl.in/w2eq2c?utm_c...

Finally, it's happening #jvm #java #valhalla

They said Kotlin isn’t for AI. We rewrote our platform anyway. Now there’s Koog — a JVM-native AI framework for production. 🔥 Drama, lessons learned, and why nobody wants to touch Python anymore: medium.com/@vadim.brili... #AI #AIAgents #Python #Kotlin #Koog #Java #SoftwareEngineering #OpenSource

If for some reason you haven’t seen it yet, we released Koog — one of the most advanced frameworks for building AI agents! Targeting unmatched range of platforms: JVM backend, Android, iOS, JS, and WebAssembly #ai #java #kotlin #genai #llm #openai #android #ios #js github.com/JetBrains/koog

With Kotlin 2.2, a new default rule makes annotations land where you expect them to, reducing boilerplate and aligning with how frameworks handle annotations. 👀 IDEA helps to catch that with in-editor warnings and quick fixes 👇 jb.gg/1bptcn

🎯 JEP 517 proposed to target JDK 26 Title: HTTP/3 for the HTTP Client API Type: feature Component: core / net Release: 26 See openjdk.org/jeps/517

Blogged - Kotlin: Emerging Patterns with Context Parameters rakhman.info/blog/kotlin-... #programming #dev @kotlinlang.org

ok... Dark mode 🌙 is coming to JavaDoc in #JDK 26 - download.java.net/java/early_a... github.com/openjdk/jdk/...

🚀 The first tech preview of OpenAPI support in Ktor is here! You can now generate OpenAPI documentation for your existing Ktor apps with minimal setup and no code changes. 🧑‍💻 Try it out with our sample project. github.com/bjhham/open-...

At last! @gradle.com 9.1 (still rc1) offers a "native" way to visualize the task graph with `--task-graph` ! (Also now runs on jdk 25) docs.gradle.org/9.1.0-rc-1/r...

Use TouchID for sudo on macOS: - cd /etc/pam.d && cp sudo_local.template sudo_local - uncomment the line in sudo_local

First JDK 25 Release Candidate: mail.openjdk.org/pipermail/jd... Downloads: jdk.java.net/25/ #JDK25 #Java25 #OpenJDK #TestItNow

We are working on a new big project for @graalvm.org — Project Crema: github.com/oracle/graal.... It will lift Native Image's default closed-world assumption by allowing dynamic loading and execution of classes at run time. Stay tuned for updates!

egahlin.github.io/2025/05/31/w... #jvm #jdk25

Postman is logging all your secrets and environment variables https://lobste.rs/s/tudmqv ##security ##web

Advanced performance analysis with async-profiler by Andrei Pangin @devoxx.uk #jvm www.youtube.com/watch?v=u7-S...

AOT Method Profiling JEP status has changed to candidate. openjdk.org/jeps/515 In my latest benchmark with Spring Petclinic, it allows to speedup the warmup compared to the regular JIT (red line versus blue one). Stabilized peak performance is currently slightly lower, but hopefully will be fixed.

Seems like #kotlin #ktor 3.2.0 will get UnixDomainSocket support for the CIO engine (Server and Client) 👏- github.com/ktorio/ktor/...

New JEP: Ahead-of-Time Command-Line Ergonomics Very nice to streamline how to create an AOT cache for your application. openjdk.org/jeps/514

Wow, LINQ for #Kotlin Multiplatform! github.com/ExoQuery/Exo.... This looks really nice, especially coming from the developer of zio-quill (LINQ in Scala) 🤯.

A taste what is already delivered and what is coming to JDKs with Project Leyden. The warmup curve for javac compile tasks clearly improve the further you go into the AOT woods.