The Weekly JVM Podcast

The Weekly JVM Podcast - 2026-04-06

Mon, 06 Apr 2026 10:03:55 GMT

trivago reported a production migration of its GraphQL gateway to GraalVM Native Image that cut server replicas from 43 to 12 while maintaining ~9,000+ requests per second per subgraph, with dramatically lower CPU and no warmup time. The episode also highlights ecosystem updates across Java/GraalVM tools (e.g., Floci AWS emulator), JavaFX (JVP support and JavaFX 26/27 rendering changes), observability for Spring Boot (Dash0 Kubernetes Operator injecting instrumentation), and Grails end-of-support planning, alongside JVM diagnostics/memory improvements (jcmd and post-mortem via JEP 528) and AI approaches like Context-Augmented Generation (CAG) for Spring Boot systems.

Topics Covered

JavaFX 26/27 ecosystem roundup (JVP & macOS Metal)

Java crashed JVM diagnostics with jcmd and core dumps (JEP 528)

Spring Boot + CAG: Beyond RAG context-aware AI systems

Article: Beyond RAG: Architecting Context-Aware AI Systems with Spring Boot

Helidon 4.4 aligns with OpenJDK cadence; adds JVP support

Helidon 4.4.0 Introduces Alignment with OpenJDK Cadence and Support via Java Verified Portfolio

Java news roundup: TornadoVM 4.0, Google ADK for Java, Grails, Tomcat, Log4j, Jakarta EE 12

Java News Roundup: TornadoVM 4.0, Google ADK for Java 1.0, Grails, Tomcat, Log4j, Gradle

Spring AI MCP Security integration (announcement/promo only)

the Spring AI MCP Security integration is about to get even nicer! Make sure to listen to the amazing discussion with lead Daniel Garnier-Moiroux! https://bootifulpodcast.podbean.com/e/daniel-garnier-moiroux-on-mcp-security/

Spring community: SpringAI talk snippets (Mellum model mention; promotion/RT)

RT by @starbuxman: And the @jetbrains Mellum model makes an appearance in the Spring AI talk by @JamesWard and @starbuxman at @VoxxedAmsterdam

This Week in Spring (March 31, 2026) highlights

Another wonderful rip-roaring and wonderful week in Spring https://spring.io/blog/2026/03/31/this-week-in-spring-march-31st-2026

Bootiful #SpringAI and agentic DevOps promos (JDConf APAC preview)

RT by @starbuxman: @bbenz just dropped the #JDConf 2026 APAC livestream preview 🔥 @starbuxman leads with Bootiful #SpringAI, plus agentic #DevOps, multi-agent orchestration & app mod from Alibaba, CERN & more. Free. Online. Earn Rewards. April 8-9. Register → http://jdconf.com

Testing patterns for very large (400+ module) Spring Boot applications

RT by @starbuxman: Testing a 400+ Module Spring Boot Application: Patterns That Actually Scale https://medium.com/all-things-software/testing-a-400-module-spring-boot-application-patterns-that-actually-scale-6288c5e9e6ed @springboot @starbuxman

Spring Boot birthday celebration (April 1, 2014 promo)

Happy (belated) birthday to spring boot, which was released on April 1, 2014!

Java Flight Recorder / Project Babylon / Project Panama interview podcast promo

it was awesome chatting with Java developer advocate Ana-Maria Mihalceanu about Java Flight Recorder, Project Babylon, Project Panama, and so many other amazing things in the Java ecosystem https://www.podbean.com/ew/pb-6xydn-1a8b92f

trivago: GraphQL gateway performance jump via GraalVM native image

Huge win for @springboot too

Helidon/Java Verified Portfolio + Oracle JDK workforce reaction (discussion promo)

to all my friends at Oracle who’ve lost their role and rhythm today: I’m very sorry Happy to endorse and promote you

Java microservices modernization (legacy to modern runtimes, event-driven, no downtime)

Migrating Legacy Microservices to Modern Java and TypeScript

Deploying Java on Arm64 with Kubernetes (container awareness & resource limits)

Deploying Java applications on Arm64 with Kubernetes

Memory optimization & utilization for Java 25 LTS (practical best practices)

Memory Optimization and Utilization in Java 25 LTS: Practical Best Practices

Beyond schema tuning: Spring MDC transaction logging with MDC context

Spring MDC Transaction Logging https://vladmihalcea.com/spring-mdc-transaction-logging/

SQL query tracing for Hibernate-generated statements

How to find the source of an SQL query generated by Hibernate https://vladmihalcea.com/source-sql-query-hibernate/

JPA mapping micro-lessons (selective association modeling patterns)

For the full list of sources that inspired this episode, view all sources and show notes.

Tips, comments, or feedback? Mail us at podcast@sourcelabs.nl

The Weekly JVM Podcast - 2026-03-30

Mon, 30 Mar 2026 10:27:15 GMT

JDK 26 is now generally available, shipping 10 JEPs, alongside related ecosystem releases like LibericaJDK 26, GlassFish 9.0 progress, Micronaut updates, and ClawRunr—an AI assistant built by composing existing Java ecosystem components (Spring AI, Spring Events, JobRunr, Spring Modulith). Spring tooling is also moving rapidly with many milestone releases plus GraalVM Native Build Tools 1.0 and EclipseLink 5.0 GA, while Grails 7.0.0 reaches GA as a modernized Apache ASF project and dramatically reduces build/repo complexity. The rest focuses on practical JVM/architecture topics—AI inference resilience patterns, managing latency for agent workflows, Clean Architecture with Spring + MongoDB, reactive streaming best practices, native memory management via FFM arenas/malloc, MicroProfile health migration to Spring Actuator, Java container image standardization from Azul, renewed GlassFish “production-ready” positioning, Kotlin updates, and arguments for why language choice still matters with AI (especially readability and verification).

Sources:

For the full list of sources that inspired this episode, view all sources and show notes.

Tips, comments, or feedback? Mail us at podcast@sourcelabs.nl

The Weekly JVM Podcast - 2026-03-16

Mon, 16 Mar 2026 10:01:18 GMT

The episode discusses the upcoming release of Java 26, highlighting features like the removal of the Applet API, improvements to the G1 garbage collector, and structured concurrency. It also covers JVM diagnostics in Kubernetes, new Java library extensions using the Service Loader API, and reactive programming performance benefits. Additionally, it touches on Kotlin advancements, including an AI observability library called Tracy and new tools for Compose performance management.

Sources:

For the full list of sources that inspired this episode, view all sources and show notes.

Tips, comments, or feedback? Mail us at podcast@sourcelabs.nl

The Weekly JVM Podcast - 2026-03-09

Mon, 09 Mar 2026 10:01:08 GMT

Java 26 is set to release on March 17th, introducing significant features like HTTP/3 support and LazyConstant for optimized value initialization. Recent performance enhancements from JDK 25 have been detailed, alongside insights into role-based access control in Java applications. Additionally, KotlinConf 2026 announced its schedule, and JavaFX 27 has adopted Metal as its default rendering pipeline on macOS, improving performance for desktop applications.

Sources:

For the full list of sources that inspired this episode, view all sources and show notes.

Tips, comments, or feedback? Mail us at podcast@sourcelabs.nl

The Weekly JVM Podcast

The Weekly JVM Podcast - 2026-04-06

Topics Covered

JavaFX 26/27 ecosystem roundup (JVP & macOS Metal)

Floci: high-performance GraalVM AWS emulator

Dash0 end-to-end observability without code changes

Grails EOL timelines and migration planning to Spring Boot

Java + MongoDB Atlas Search: faceted full-text API

Does Java use too much memory? JEP-backed myth-busting

Java crashed JVM diagnostics with jcmd and core dumps (JEP 528)

Spring Boot + CAG: Beyond RAG context-aware AI systems

Helidon 4.4 aligns with OpenJDK cadence; adds JVP support

Java news roundup: TornadoVM 4.0, Google ADK for Java, Grails, Tomcat, Log4j, Jakarta EE 12

Spring AI MCP Security integration (announcement/promo only)

Spring community: SpringAI talk snippets (Mellum model mention; promotion/RT)

This Week in Spring (March 31, 2026) highlights

Bootiful #SpringAI and agentic DevOps promos (JDConf APAC preview)

Testing patterns for very large (400+ module) Spring Boot applications

Spring Boot birthday celebration (April 1, 2014 promo)

Java Flight Recorder / Project Babylon / Project Panama interview podcast promo

trivago: GraphQL gateway performance jump via GraalVM native image

Helidon/Java Verified Portfolio + Oracle JDK workforce reaction (discussion promo)

Java microservices modernization (legacy to modern runtimes, event-driven, no downtime)

Deploying Java on Arm64 with Kubernetes (container awareness & resource limits)

Memory optimization & utilization for Java 25 LTS (practical best practices)

Beyond schema tuning: Spring MDC transaction logging with MDC context

SQL query tracing for Hibernate-generated statements

JPA mapping micro-lessons (selective association modeling patterns)

The Weekly JVM Podcast - 2026-03-30

The Weekly JVM Podcast - 2026-03-16

The Weekly JVM Podcast - 2026-03-09