What happens when two developers use GitHub Copilot to build the same #Java app live, under quality gates? @rabauer.dev turned his stream with @edelveis.dev into a write-up on what worked, what broke, and which prompting approach held up better once the checks kicked in: rabauer.dev/blog/vibe-co...

Getting the last element of ordered collections in Java used to be awkward, especially with LinkedHashSet. Java 21 changed that with JEP 431, introducing sequenced collections and methods like getFirst(), getLast(), and reversed() for encounter-ordered types. A neat upgrade for everyday code 👇

This Wednesday: @edelveis.dev and Joe Kutner on buildpacks. Why they exist, what they fix, and why they can be a better alternative to Dockerfiles when you want faster, cleaner, more consistent image builds. 📅 Wednesday at 16:00 CET www.youtube.com/live/x0uLOhh...

CyberJAR crossed 100,000 views on YouTube. 🥳 For us, that is more than a number. It means people keep coming back for practical #Java content from @asm0dey.site and @edelveis.dev, and that means a lot. Thank you for watching, sharing, and helping the channel grow: www.youtube.com/@cbrjar

🧵 THREAD: Spring Developer Roadmap 2026. If you work with Spring and want a clearer map of what matters next, this is the stack to focus on: data, architecture, communication, security, and observability.

Too many imports for a tiny example? JEP 511 adds module import declarations, so one import module statement can replace a whole stack of type imports. Small change, much cleaner exploratory code 👇

Most #Java roadmaps teach tools. This one teaches order. @asm0dey.site breaks down a practical Java roadmap for 2026 from core Java to Spring, SQL, testing, deployment, and concurrency, with production in mind from the start. youtu.be/tSDCpN3I2_s

How do you build better container images for Java apps? In our recent webinar, @edelveis.dev introduced #Buildpacks and other techniques for creating smaller, faster, and more secure container images using a #SpringBoot + #Vaadin app. Watch the full webinar: www.youtube.com/watch?v=z1I2...

Intelligent CIO published a piece by Dmitry Chuyko on choosing container base images for #Java apps. Security, performance, Java support, operational efficiency, licensing, support. The full picture matters more than a single metric. www.intelligentcio.com/north-americ...

Interesting Java API in work: JEP 531, Lazy Constants. The idea is simple: defer initialization until first use, keep the value immutable after that, and avoid the usual hand-rolled lazy-field boilerplate. Tiny example 👇

🧵 THREAD: Liquibase makes database changes in Spring Boot much less fragile. This is a practical guide to the parts that matter most in real projects: changelogs, rollbacks, preconditions, diff, and what makes migrations safe in CI/CD.

New video with @edelveis.dev: 5 lightweight Linux distros for containers, side by side. Alpine, Alpaquita, Chiseled Ubuntu, RHEL UBI Micro, and Wolfi, compared on libc, size, package ecosystem, release model, and supply chain security: youtu.be/geXIQtXSqus

If you missed Miikka Andersson’s session with @edelveis.dev on Docker images for #Java apps, he turned it into a solid write-up. Multi-stage builds, layered JARs, buildpacks, AOT cache, native images, hardened runtime images: vaadin.com/blog/buildin...

Java 26 shipped. Java 27 is already lining up security upgrades. JEP 527 adds post-quantum hybrid key exchange for TLS 1.3 in javax .net.ssl, combining ML-KEM with classical ECDHE. Default JSSE configs get the upgrade automatically. Custom group selection stays simple 👇

Greetings from #JavaOne! @asm0dey.site is there this week, meeting the community and taking in everything the event has to offer. 😎

Liberica JDK 26 is out. 10 JEPs in this release: HTTP/3, faster G1, stricter final fields, AOT cache with any GC, Applet API removal, and more. Plus 2,825 fixes across JDK and JavaFX. Details and downloads: bell-sw.com/blog/liberic...

🧵 THREAD: Lombok spares you from a lot of boilerplate, but it also changes your code in ways that aren’t always obvious. This is a quick look at where it helps, where it tends to cause trouble, and what to use instead when the trade-off stops making sense.

🚀 JDK 26 lands tomorrow. Non-LTS, still a release worth paying attention to: stricter final fields, HTTP/3, faster G1, applets gone. We have a video walkthrough of all 10 JEPs: youtu.be/wtTdWkosCIc

Most Java AI demos are still just model calls with extra steps. This Embabel guide shows a different approach: typed goals, typed actions, LLM for the fuzzy parts, Java for the hard rules. Take a look: bell-sw.com/blog/build-a...

New video with @edelveis.dev: jOOQ in a real Spring Boot 4 app. CTEs, MULTISET, dynamic queries, nested DTOs, row-level locking, Testcontainers. If your persistence layer is getting complicated, start here: youtu.be/J47iBW3TTUc

JEP 524 lands in upcoming #Java26 with a second preview of standard PEM API. PEMEncoder and PEMDecoder handle keys, certs, CRLs, and more in just a few lines. Enable preview and make a round-trip from KeyPair to PEM text 👇

eSecurityPlanet covered our Devoxx 2025 container security survey and the problems teams keep running into in practice: slow remediation, human error, bloated base images, and reactive updates. www.esecurityplanet.com/threats/why-...

JDK 26 is where some long-running #Java stories move forward: final fields get stricter, HTTP client gets HTTP/3, G1 gets faster, and applets finally leave for good. Dmitry Chuyko put all JEPs into one readable overview: bell-sw.com/blog/an-over...

🌱 New video: Spring Developer Roadmap 2026. @asm0dey.site goes past Spring Boot features into the stuff that decides whether your system holds up in prod: real SQL, architecture trade-offs, messaging vs RPC, security, Docker and Kubernetes, and observability. youtu.be/nuldl1m3pqA

⚡ We’re live now with @edelveis.dev and @rabauer.bsky.social building a Spring Boot/Vaadin/OpenAI app in VS Code with GitHub Copilot, with strict CI gates turned on, so the code has to be good for real: www.youtube.com/watch?v=ukcQ...

🧵 THREAD: JDBC, JPA, Hibernate, jOOQ. The same words show up in every #Java persistence discussion, and they’re easy to mix up. This is a quick map of where each one sits in the stack and when it makes sense. Save it for the next architecture review 📚

In #Java26, JEP 522 cuts G1 GC sync overhead. A second card table makes write barriers cheaper, giving 5–15% throughput gains for reference-heavy workloads and slightly better pause times. No code changes. Just faster G1. 👇

Tomorrow: live vibe coding battle. @edelveis.dev + @rabauer.bsky.social build a Spring Boot + Vaadin + Spring AI app in VS Code with Copilot. Strict CI gates on: PMD, SpotBugs, JaCoCo, Trivy, OWASP ZAP. 🔔 www.youtube.com/watch?v=ukcQ...

Liquibase vs Flyway. Pick your fighter. @asm0dey.site and @antonarhipov.bsky.social are doing the side-by-side at @devnexus.bsky.social on Wed, Mar 4: formats, rollbacks, versioning, runtime, cost. Details: devnexus.com/events/the-u...

Most Java UIs start as a quick internal screen. Then it becomes login, roles, a grid, and filtering... This Vaadin walkthrough builds the baseline with Spring Boot: security, layouts, a Grid backed by a CallbackDataProvider, plus filter and search that stays readable. bell-sw.com/blog/how-to-...

🔥 We’re live now, come join the conversation! @edelveis.dev + @yourjavaguy.bsky.social on what actually makes #Java communities grow and stay healthy: www.youtube.com/live/2zaWyaH...

In #Java26, JEP 504 finally removes the Applet API. java.applet.Applet, javax.swing.JApplet, etc. are gone. If you still extend Applet/JApplet, you’ll need an older JDK or a real desktop UI (AWT/Swing/JavaFX). Minimal repro that breaks on 26 👇

This Thu: live chat on the human side of Java. @edelveis.dev + @yourjavaguy.bsky.social on how dev communities grow, stay healthy, and help people beyond the code. Feb 26, 18:00 CET / 09:00 PT 🔔 www.youtube.com/live/2zaWyaH...

23% of 427 DevOps pros we surveyed at Devoxx 2025 reported a container security incident in the past year.

A thorough, workload-driven Java GC guide from JEE.gr. Clear guidance on picking the right collector, plus good context on G1 vs Generational ZGC and how container limits change the outcome: jee.gr/the-ultimate...

🧵 THREAD: SBOMs and image signing often get treated like “compliance paperwork.” In practice, they solve two very operational problems: knowing what’s inside an image, and proving that the image you deploy is the image you intended to deploy.

In #Java26, JEP 500 makes “final” more final. Reflective writes to final fields warn by default (--illegal-final-field-mutation=warn), can be allowed (--enable-final-field-mutation), or denied (--illegal-final-field-mutation=deny). Hacks still work, but cleanup is coming. Repro 👇

Happy Lunar New Year to everyone celebrating today. 新年快乐! 祝大家新的一年马到成功 🧧

Berlin: @asm0dey.site is hosting Spring User Group Berlin this Thu (Feb 19). K8s Secrets in Spring, the production way (env vars vs files, rotation) + Kotlin for Spring 7 (pros/cons). 18:30 CET. RSVP: www.meetup.com/spring-user-...

Platform adoption can fail even when the tech is fine. Mandates create “usage,” then teams build workarounds to keep shipping. You pay the platform cost and you still inherit the extra tech debt. Good breakdown here on what changes the outcome: platformengineering.com/features/why...

We’re live now with @dashaun.com and @cat-edelveis.bsky.social. Real talk on container security from the Devoxx 2025 survey. Join here: www.youtube.com/watch?v=Sqmx...

Your container security strategy might be setting you up for failure and you won't know until it matters. ⚡ Live TODAY 09:30 ET: @dashaun.com & @cat-edelveis.bsky.social break down the 2025 State of Container Security survey from Devoxx: www.youtube.com/watch?v=Sqmx...

Spring Data MongoDB takes the best of MongoDB and Spring Data. @cat-edelveis.bsky.social covers indexing, projections, custom queries, and aggregation pipelines. Real queries, actual data volumes, analytics. Practical patterns for production use: youtu.be/LCHMQk_uAv4

Most Java security incidents are predictable engineering debt: vulnerable deps, weak boundaries, and no visibility when things break. We wrote a practical #Java app security checklist that covers code, runtime, and containers: bell-sw.com/blog/a-guide...

In the upcoming #Java26, lazy constants get their second preview (JEP 526). java.lang.LazyConstant lets the app initialize them on demand with at-most-once semantics even under concurrency. Once initialized, the JVM can treat the value as a true constant and apply constant folding.👇

Onboarding a new team taking weeks instead of hours is usually a symptom, not the problem itself. This article explains how ad-hoc DevOps practices stop working at scale, and where platform engineering really helps: platformengineering.com/social-faceb...

🧵 Thread: CVEs in container images don’t “end” just because you cleaned up an image once. If you run containers in prod, save this for later.

If you missed the stream on why JDBC connection pools break down in microservices, the recording is up. Failure modes + what to do instead: www.youtube.com/live/j13zs_L...

New Liberica NIK CPU builds: 23.0.11 (JDK 17), 23.1.10 (JDK 21), 25.0.2 (JDK 25). Includes security + stability fixes and addresses 11 CVEs. Details: bell-sw.com/blog/liberic... Download: bell-sw.com/pages/downlo...

We’re live now: JDBC connection pools in microservices, why they break down, and what to do instead. Join: www.youtube.com/live/j13zs_L...