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Daniel Oh

@danieloh30.bsky.social
2.2K followers 4 following 1.4K posts

Java Champion, CNCF Ambassador & TAG DevEX Co-Chair, Microsoft MVP, Developer Advocate, Technical Marketing, Keynote Speaker, Published Author bit.ly/danielohtv

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Daniel Oh @danieloh30.bsky.social · 5h
Quarkus 3.40 LTS - new LTS version quarkus.io/blog/quarkus... via @quarkusio
quarkus.io
Quarkus 3.40 LTS - new LTS version
We released Quarkus 3.40 LTS, our new LTS version.
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Daniel Oh @danieloh30.bsky.social · 11h
developers.redhat.com/articles/202...
developers.redhat.com
How we cut CI failure triage from hours to minutes using AI | Red Hat Developer
Implement enterprise-wide automation with Pipeline Failure Analyzer: AI-powered CI/CD failure diagnosis.
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Daniel Oh @danieloh30.bsky.social · 11h
developers.redhat.com/articles/202...
developers.redhat.com
Red team your AI model with garak | Red Hat Developer
Learn how to use garak, an open source LLM vulnerability scanner developed by NVIDIA, to perform red teaming on AI models.
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Daniel Oh @danieloh30.bsky.social · 11h
developers.redhat.com/articles/202...
developers.redhat.com
Distributed training on OpenShift AI 3.4 with Kubeflow Trainer v2 | Red Hat Developer
Learn how to simplify distributed training with Kubeflow Trainer 2 on OpenShift AI by replacing framework-specific CRDs with a unified TrainJob resource.
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Daniel Oh @danieloh30.bsky.social · 29/09/2026
The case for a cloud native agent harness www.cncf.io/blog/2026/09... #cncf via @CloudNativeFDN
cncf.io
The case for a cloud native agent harness
Coding agents became useful when they stopped being a chat box. Four things changed the shape of the problem: capable tools, a shared repository and filesystem, subagents, and skills that capture what...
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Daniel Oh @danieloh30.bsky.social · 28/09/2026
View my verified achievement from @linuxfoundation. www.credly.com/badges/0761e... via @credly
credly.com
AGNTCon + MCPCon Japan 2026 Speaker Badge was issued by The Linux Foundation to Daniel Oh.
Earners of this badge are speakers, selected by the Program Committee, who have provided thought-leadership and shared best practices with attendees during their talk(s) at AGNTCon + MCPCon Japan 2026...
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Daniel Oh @danieloh30.bsky.social · 25/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Managing edge solutions with Red Hat: A layered approach | Red Hat Developer
Learn how to manage edge computing at scale with Red Hat solutions for secure, consistent operations across distributed environments.
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Daniel Oh @danieloh30.bsky.social · 25/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Build golden path CI/CD workflows in Red Hat Developer Hub | Red Hat Developer
Learn how to author Red Hat Developer Hub golden path templates to scaffold Go microservices and monitor Tekton, Argo CD, and Quay in a unified portal.
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Daniel Oh @danieloh30.bsky.social · 25/09/2026
Security Slam 2026 – Fall edition www.cncf.io/blog/2026/09... #cncf via @CloudNativeFDN
cncf.io
Security Slam 2026 – Fall edition
The Open Source Security Foundation (OpenSSF) is partnering with the Cloud Native Computing Foundation (CNCF) Security Technical Advisory Group (TAG Security) to support the 2026 Security Slam at…
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Daniel Oh @danieloh30.bsky.social · 24/09/2026
Day 1 at WeAreDevelopers just kicked off😎😎 Look forward to catching up with Java and AI developers this week💪💪 Eric Deandrea Ignacio Riesgo
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Daniel Oh @danieloh30.bsky.social · 24/09/2026
Static thresholds for canary rollouts are officially brittle. Don't let standard Prometheus queries cause alert fatigue. Join me TODAY at 10:20 AM on Stage 2 at #WeAreDevelopers NA!
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Daniel Oh @danieloh30.bsky.social · 24/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Self-encrypting VM images for confidential environments hands on | Red Hat Developer
Learn how to create a self-encrypting VM image using Fedora Rawhide for data protection in runtime with AMD's SEV-SNP and Intel's TDX technologies.
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Daniel Oh @danieloh30.bsky.social · 24/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Scaling GitOps: The "pull" architecture for global fleets | Red Hat Developer
Find out the results of a performance test that assessed how the Argo CD Agent pull architecture scales to robust enterprise requirements.
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Daniel Oh @danieloh30.bsky.social · 24/09/2026
Quarkus 3.39.5 - Maintenance release quarkus.io/blog/quarkus... via @quarkusio
quarkus.io
Quarkus 3.39.5 - Maintenance release
Quarkus is a Java framework for building fast, efficient, cloud-native applications. It is Kubernetes-native, supports JVM and native executable deployments, provides live reload and delightful develo...
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Daniel Oh @danieloh30.bsky.social · 23/09/2026
Java is essential for the future of AI-native enterprise platforms. ☕️🚀Join my upcoming session: "Building Intelligent Enterprise Agents: Agent Patterns, MCP, and the Future of AI Native Design" at 2 pm today at #AIContext #AIAgents #ModelContextProtocol #EnterpriseAI #SoftwareArchitecture
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Daniel Oh @danieloh30.bsky.social · 23/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
How I massively improved my AI inference performance without buying new hardware | Red Hat Developer
Optimize LLM inference performance with a 71% latency reduction on NVIDIA H200 GPUs. Learn how to cut TTFT from 995ms to 287ms with smarter request routing.
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Daniel Oh @danieloh30.bsky.social · 23/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Build OpenJDK container images locally using the standalone S2I tool | Red Hat Developer
Master Java container builds with the S2I standalone toolkit and OpenShift BuildConfigs. Explore code examples, custom runtime scripts, and certificate options.
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Daniel Oh @danieloh30.bsky.social · 22/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Scaling localnet user-defined networks (CUDNs) in Red Hat OpenShift to 3,500 networks | Red Hat Developer
Boost Red Hat OpenShift performance with 3,500 Localnet CUDNs: Learn how to scale networks and reduce control plane overhead.
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Daniel Oh @danieloh30.bsky.social · 22/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
AI threat modeling shouldn't be a bottleneck, so we open sourced ours | Red Hat Developer
Learn about Red Hat's open-source AI-assisted threat modeling tool, agentic-threat-modeling, for faster, more efficient code security.
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Daniel Oh @danieloh30.bsky.social · 22/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Comparison of Cluster Autoscaler and KEDA MachineSet Autoscaling on Red Hat OpenShift | Red Hat Developer
Compare Cluster Autoscaler and KEDA's MachineSet Autoscaler in Red Hat OpenShift, focusing on their differences and the best choice for workload demand.
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Daniel Oh @danieloh30.bsky.social · 18/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Catching poor LLM performance and accuracy before deployment | Red Hat Developer
Implement a regression detector for Red Hat AI Inference, catching performance regressions in CI/CD before release. Learn how in this guide.
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Daniel Oh @danieloh30.bsky.social · 18/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
From hours to minutes: Optimizing Red Hat Developer Hub performance testing with immutable LDAP images | Red Hat Developer
Optimize Red Hat Developer Hub performance testing with pre-built LDAP images, reducing setup time and improving testing framework performance.
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Daniel Oh @danieloh30.bsky.social · 18/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Build a unified CI/CD control plane with Red Hat Developer Hub | Red Hat Developer
Discover how to deploy Red Hat Developer Hub and configure plug-ins for Argo CD and Tekton to lower cognitive load and streamline OpenShift pipelines.
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Daniel Oh @danieloh30.bsky.social · 18/09/2026
OpenTelemetry everywhere: Migrating a metrics platform at scale www.cncf.io/blog/2026/09... #cncf
cncf.io
OpenTelemetry everywhere: Migrating a metrics platform at scale
For most of the last decade our metrics pipeline ran on gostatsd, the open-source StatsD implementation we maintain. It primarily did two jobs: as sidecar on every host and the aggregation tier at the...
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Daniel Oh @danieloh30.bsky.social · 17/09/2026
Quarkus 3.39.4 - Maintenance release quarkus.io/blog/quarkus... via @quarkusio
quarkus.io
Quarkus 3.39.4 - Maintenance release
Quarkus: Supersonic Subatomic Java
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Daniel Oh @danieloh30.bsky.social · 17/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Why your Kafka topic ignores retention.ms (and how to fix it) | Red Hat Developer
Fix unexpected Kafka retention delays. Discover how segment rolling impacts log deletion and align segment.ms with retention.ms to clear old records.
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Daniel Oh @danieloh30.bsky.social · 17/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Constraining AI agents with Red Hat AI: Containment, identity, and governance | Red Hat Developer
Learn how to restrict, verify, and control agent actions with Red Hat OpenShift AI.
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Daniel Oh @danieloh30.bsky.social · 17/09/2026
Running OpenBao on Kubernetes with a CloudNativePG PostgreSQL backend www.cncf.io/blog/2026/09... #cncf
cncf.io
Running OpenBao on Kubernetes with a CloudNativePG PostgreSQL backend
Managing infrastructure secrets on Kubernetes needs a backend that is self-healing and free of vendor lock-in, and that is exactly what OpenBao (the Linux Foundation’s open-source fork of HashiCorp…
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Daniel Oh @danieloh30.bsky.social · 17/09/2026
View my verified achievement from @linuxfoundation. www.credly.com/badges/124f6... via @credly
credly.com
Speaker: KubeCon + CloudNativeCon + OpenInfra Summit + Pytorch China 2026 was issued by The Linux Foundation to Daniel Oh.
Earners of this badge are speakers, selected by the Speaker: KubeCon + CloudNativeCon + OpenInfra Summit + Pytorch China 2026 Co-Chairs, who have provided thought-leadership and shared best practices ...
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Daniel Oh @danieloh30.bsky.social · 16/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Red Hat Developer Hub: Preventing compliance violations with AI coding agents | Red Hat Developer
Connect AI coding agents to Red Hat Developer Hub to enforce governance rules, prevent compliance violations, and ground architectural choices in your catalog.
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Daniel Oh @danieloh30.bsky.social · 11/09/2026
Building a reliable cloud native foundation for distributed AI training www.cncf.io/blog/2026/09... #cncf
cncf.io
Building a reliable cloud native foundation for distributed AI training
AI workloads are changing what platform teams need from infrastructure. Provisioning GPUs and standing up a cluster no longer makes a platform “AI-ready.” Once training spans more than one node…
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Daniel Oh @danieloh30.bsky.social · 11/09/2026
Connecting AI agents directly to backend MCP servers is a massive production security risk. No auth, no RBAC, and zero guardrails. ❌ My new @DZone guide fixes this using agentgateway to secure your Quarkus backend:👉 dzone.com/articles/goo... #AIagents #MCP #AppSec
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Daniel Oh @danieloh30.bsky.social · 11/09/2026
Want the power of AI coding assistants without exposing sensitive enterprise data? Join me TODAY at 16:10 JST at #AGNTCon + #MCPCon Japan (Hall 1F) to learn how to build your own open-source Claude Code using local LLMs & AI guardrails! 🚀📍 sched.co/2QlEY #AICoding #LocalLLM #OpenSource #IBM #RedHat
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Daniel Oh @danieloh30.bsky.social · 11/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
From token consumer to token provider: Building your org's AI API | Red Hat Developer
Manage AI infrastructure costs and governance with Red Hat AI 3.4's Model-as-a-Service.
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Daniel Oh @danieloh30.bsky.social · 10/09/2026
Starting in 25 mins at #AGNTCon + #MCPCon Japan! 🇯🇵Learn to architect autonomous, production-ready Java systems with Daniel & @kevindubois.com 🛠️ Hands-on multi-agent design patterns🤝 Agent-to-Agent (A2A) collaboration👁️ Observability & guardrails🕒 16:10 JST | 📍 Hall B🔗
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Daniel Oh @danieloh30.bsky.social · 09/09/2026
Part 2: Securing and Scaling Goose-to-Java Agent Traffic With agentgateway dzone.com/articles/goo... via @DZoneInc
dzone.com
Part 2: Securing and Scaling Goose-to-Java Agent Traffic
Deploy agentgateway as a security proxy between Goose AI agents and Quarkus MCP servers to enforce JWT auth, RBAC, and tool-poisoning guardrails.
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Daniel Oh @danieloh30.bsky.social · 09/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Use a local and open source code assistant | Red Hat Developer
Learn how to install and configure OpenCode, an open source AI coding assistant, for local development with Ollama, OpenVINO, or Red Hat AI.
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Daniel Oh @danieloh30.bsky.social · 09/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Personalize your product's text-to-speech voice for any language: Fine-tuning with Kubeflow Trainer on Red Hat OpenShift AI | Red Hat Developer
Learn how to fine-tune your text-to-speech model for Turkish with Red Hat OpenShift AI and Kubeflow Trainer, reducing speech errors by over 90%.
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Daniel Oh @danieloh30.bsky.social · 09/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Deploy NeMo Guardrails on Red Hat OpenShift AI | Red Hat Developer
This article demonstrates how to deploy a NeMo Guardrails configuration on a Red Hat OpenShift AI cluster. It covers prerequisites, the deployment process, and testing the deployed server.
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Daniel Oh @danieloh30.bsky.social · 09/09/2026
How cloud native goes AI native www.cncf.io/blog/2026/09... #cncf
cncf.io
How cloud native goes AI native
“A sales guy writing code” used to be the lead-up to a joke. But now no one’s laughing. Designers used to sit meekly waiting for the high priests of code to make their designs real. Now they don’t…
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Daniel Oh @danieloh30.bsky.social · 09/09/2026
Whose GPUs are these, anyway? Secure, self-service metrics for multi-tenant Kubernetes www.cncf.io/blog/2026/09... #cncf
cncf.io
Whose GPUs are these, anyway? Secure, self-service metrics for multi-tenant Kubernetes
It was a routine cost review. The slide showed the month’s GPU spend, the biggest line on the whole infrastructure bill, and someone asked a five-word question: “Are we using these things?
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Daniel Oh @danieloh30.bsky.social · 09/09/2026
KubeCon Shanghai was an absolute blast! 🚀 Huge thanks to @CloudNativeFdn and everyone who stopped by my session. The cloud-native community in China is building at an incredible scale—the energy and technical Q&As were top-tier. See you at the next one! 🇨🇳💻 #KubeCon #CloudNative
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Daniel Oh @danieloh30.bsky.social · 08/09/2026
🚀 Happening TODAY in Shanghai! If you are attending KubeCon + CloudNativeCon + OpenInfra Summit + PyTorch Conference China 2026, do not miss our tech session on the future of DevOps and autonomous infrastructure!! @kevindubois.com 4:15 pm at Mandarin Hall I #AgenticAI #ArgoCD #IBM
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Daniel Oh @danieloh30.bsky.social · 08/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Reference architecture for HA scanning with Red Hat Advanced Cluster Security for Kubernetes | Red Hat Developer
Learn how to eliminate scan API downtime with Red Hat Advanced Cluster Security for Kubernetes using a reference architecture with two Central service instances and client-side failover
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Daniel Oh @danieloh30.bsky.social · 08/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Understanding W8A8 INT8 LLM quantization: Half the size, better performance, same accuracy | Red Hat Developer
Cut Llama 3.1 8B VRAM by 46% without losing accuracy. Master the mechanics of INT8 W8A8 quantization, SmoothQuant, and GPTQ using llm-compressor
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Daniel Oh @danieloh30.bsky.social · 08/09/2026
Handling vulnerability reports: Recipe card www.cncf.io/blog/2026/09... #cncf
cncf.io
Handling vulnerability reports: Recipe card
Set the Station: Define a clear reporting path in your README.md and SECURITY.md so reporters know where to deliver ingredients. Taste Test First: Determine if a report is a real vulnerability or just...
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Daniel Oh @danieloh30.bsky.social · 08/09/2026
Quarkus 3.39.2, 3.33.3.2 LTS, 3.27.5.2 LTS - Maintenance releases quarkus.io/blog/quarkus...
quarkus.io
Quarkus 3.39.2, 3.33.3.2 LTS, 3.27.5.2 LTS - Maintenance releases
Quarkus: Supersonic Subatomic Java
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Daniel Oh @danieloh30.bsky.social · 07/09/2026
Weather in Shanghai is top-tier today! Perfect excuse for a long city walk. 🌤️🚶‍♂️
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Daniel Oh @danieloh30.bsky.social · 04/09/2026
Build governed, cloud-native Java MCP tool services for Goose agents using Quarkus LangChain4j, Java 25, and Jakarta Bean Validation. dzone.com/articles/gov...
dzone.com
Part 1: Building Governed MCP Tool Services
Build governed, cloud-native Java MCP tool services for Goose agents using Quarkus LangChain4j, Java 25, and Jakarta Bean Validation.
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Daniel Oh @danieloh30.bsky.social · 04/09/2026
developers.redhat.com/articles/202...
developers.redhat.com
Build AI-assisted firewall workflows with Ansible Automation Platform | Red Hat Developer
Automate firewall changes with Ansible Automation Platform, ServiceNow, and AI. Learn to build a governed, event-driven workflow with human approvals
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