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monthly digest may
Product update
May 27, 2026
6 min read

GreenNode May Digest: PostgreSQL Cluster on the Portal, a major ACL upgrade, and more flexible LB Autoscale

This May, GreenNode introduced new infrastructure enhancements, from PostgreSQL Cluster for production workloads to upgraded ACL and easier LB Autoscale configuration.
A Practical Backend Playground with Go Gin, Keycloak, Temporal, and gRPC
May 26, 2026
8 min read

From a Tech Stack Email to a Working Playground: A Mini Order System

A hands-on guide to learning Go Gin, Keycloak, Temporal, MySQL, MongoDB, and gRPC by building and running a mini Order System with auth, databases, workflow, and internal service calls.
kubernetes-oidc-authentik-part-2
Tutorial
May 24, 2026
8 min read

Kubernetes User Authentication with OIDC Part 2: Using Self-Hosted Authentik

Learn how to use self-hosted Authentik for Kubernetes OIDC authentication, including kube-apiserver setup, kubelogin configuration, and RBAC by group.
contract-free-ai-inference-flexible-gpu
Insight
May 22, 2026
8 min read

Best AI Compute for Inference Without Long-Term Contracts in 2026

Explore contract-free AI inference options in 2026, from on-demand GPU to MaaS, and learn how to choose the right provider for your region.
object-storage-for-ai-workloads
May 20, 2026
8 min read

Object Storage for Big Data & AI: Architecture, Cost Optimization & Enterprise Deployment Guide 2026

Discover how object storage powers enterprise AI pipelines at scale — from data lake architecture and S3 API integration to hidden egress costs and Vietnam data sovereignty compliance. Learn why 1,000+ enterprises choose GreenNode vStorage over AWS S3 for Big Data and AI workloads in 2026.
Cloud Migration in Vietnam 5 Providers Worth Considering.png
Insight
May 13, 2026
6 min read

Best Cloud Migration Providers in Vietnam for Enterprise Growth

Looking for a cloud migration partner in Vietnam? Compare five providers across infrastructure, compliance, support, and AI capabilities.
openclaw-native-a2a-limitations-production.png
Tutorial
May 12, 2026
15 min read

OpenClaw Multi-Agent Workflows Part 2: Native A2A, Limitations, and What's Next

Explore OpenClaw’s native A2A model through session tools, production limitations, security risks, and the orchestration paths needed for reliable multi-agent deployment.
How Patroni Delivers High Availability for PostgreSQL on Kubernetes.png
May 12, 2026
10 min read

How Patroni Delivers High Availability for PostgreSQL on Kubernetes

Learn how Patroni delivers PostgreSQL high availability on Kubernetes through leader locks, automatic failover, resourceVersion, and failsafe mode.
Affordable Cloud GPU Services for Startups
Insight
May 11, 2026
6 min read

Affordable Cloud GPU Services for AI Startups in 2026: Cost, Scale, and Performance

Cheap GPUs are not enough. See why regional infrastructure, low latency, data sovereignty, and local support matter more over time.