Networking

The Ambition: A Hybrid-Cloud K3s Cluster When building out the underlying infrastructure for vinhthang.dev, I had a bold idea: what if I could seamlessly blend Oracle Cloud Infrastructure (OCI) instances with external, high-RAM physical nodes into a single, cohesive Kubernetes cluster? The goal was to leverage a beefy 32GB RAM external node (which we called oracle10) to host heavy Java microservices and stateful applications (like a PostgreSQL replica and Apache Pulsar), while keeping the control plane firmly rooted in my OCI Always Free arm10 instance. ...

One of the most frustrating bottlenecks in self-hosting is uploading large files to overseas cloud servers. Whether you are uploading a 45 GB lossless FLAC music collection to Navidrome, backing up 4K video files to FileBrowser, or transferring gigabytes of PDF datasets to an AI vector store, standard public internet routing often degrades performance to an agonizing crawl. In this post, I will explain why international cross-border uploads stall, and how we used Cloudflare WARP and Anycast Edge Ingestion to boost our file upload throughput by 5x to 10x directly into our cloud fleet at vinhthang.dev. ...