Your Infrastructure Lives in One System. Now Procurement Can, Too.

Performance Has Layers

Oxide Computer Company chia sẻ cách họ tối ưu hiệu năng mạng xuyên suốt mọi lớp trong hệ thống rack tự xây dựng, bao gồm điều chỉnh jumbo frames (MTU 8500 cho guests, 9000 cho underlay), TCP segmentation offloads, phân bổ CPU cho worker threads của virtual NIC, và tận dụng ECMP cùng IPv6. Họ giải thích lý do MTU nên đặt trên instance thay vì switch port, cũng như rủi ro vận hành khi ICMP path-MTU discovery bị drop.

Một lập trình viên cần đọc bài này để hiểu cách tối ưu hóa hiệu suất mạng từ cấp hạ tầng vật lý đến giao diện ứng dụng, giúp họ có kiến thức toàn diện về cách thiết kế và tối ưu hóa hệ thống mạng hiệu quả hơn trong các dự án phần mềm.

OTel and mesh-derived metrics: A 2026 reference

A practical reference for integrating Linkerd service mesh metrics into an existing OpenTelemetry Collector pipeline. Covers what OTel app instrumentation provides versus what Linkerd's sidecar proxy exposes at the network layer, where the two overlap (request rate, latency, errors) and where they don't (mTLS identity, business semantics, distributed traces). Includes a working OTel Collector config using a dedicated prometheus/mesh receiver with Kubernetes pod discovery, OTTL-based metric filtering, and resource enrichment to tag mesh metrics with layer=mesh. Also discusses cardinality implications of proxy label sets, a known $-expansion gotcha in Collector relabel configs, and how to visualize both layers side-by-side in Grafana using a mixed datasource panel. The reference stack uses K3s, Linkerd edge-26.5.5, OTel Demo (Astronomy Shop), OTel Collector contrib 0.118.0, VictoriaMetrics, and Grafana.

Anbox Cloud on C4A metal: Android, at scale, without friction

Canonical's Anbox Cloud now supports Google Cloud's C4A metal instances, which are Axion-based Arm bare-metal servers. This combination eliminates the long-standing trade-off between native Android performance and cloud scalability. Developers can run large-scale Cuttlefish environments directly on Arm hardware without nested virtualization, enabling system-level Android development, CI/CD pipelines, and validation workflows that previously required physical device labs. Anbox Cloud also spans C4A and N4A instances, letting teams mix bare-metal and virtual infrastructure within a single deployment.

I use a single PC for my coding, gaming, and self-hosting tasks without them sabotaging each other

A developer shares how they use a single gaming PC for coding, gaming, and self-hosting by leveraging virtualization. The setup uses Hyper-V with a NixOS VM as the primary dev environment, WSL2 for Debian and Arch Linux instances, Windows Sandbox for risky PowerShell experiments, and Podman Desktop for containerized self-hosted apps. Games requiring kernel-level anti-cheat run natively on bare-metal Windows 11, while lighter games stream from a separate Proxmox node. Syncthing handles file sync between the VM and host.

I tried passing an NPU through Proxmox, and the software just isn't ready to catch up with the hardware

An attempt to pass an NPU from an ASUS NUC 14 Pro+ (Intel Core Ultra 7 155H) through Proxmox into an LXC container revealed that while the device appears under /dev/accel/, the software stack isn't ready. OpenVINO crashed with a memory error before enumerating available hardware, and the absence of /dev/dri/ made the environment lopsided. The conclusion: device visibility in Proxmox doesn't equal a usable accelerator. The kernel, firmware, drivers, and user-space libraries all need to align, and for NPUs in Proxmox containers, they currently don't. The recommendation is to wait for the ecosystem to mature and use CPU or GPU inference in the meantime.

The Hot Fix

A tech support worker responds to a ticket about a printer in HR printing gibberish instead of documents. Upon arrival, he finds a manager using a hair dryer on the printer, which he defuses diplomatically. After basic troubleshooting fails, the team discovers the printer is outputting anonymous HR complaints submitted through a supposedly decommissioned intranet system, leading them to trace the network source of the misdirected print jobs.

South Africa’s fibre underdogs are beating the giants

The Internet Service Providers' Association (Ispa) of South Africa released its February 2026 FNO Perception Survey, where ISPs rate the fibre network operators they buy wholesale access from. Six smaller operators — Lightspeed, Open Fibre, Lightstruck, Evotel, Seacom FibreCo, and WeCom — scored between 6.6 and 7.1 out of 10, outperforming most of the eight largest networks. Octotel retained the top spot among the major players at 7.5, while Vumatel showed the biggest year-on-year improvement (+1.0). The survey covered 406 ratings from 45 ISPs across 11 metrics including reliability, technical proficiency, and open-access adherence. Ispa notes the smaller operators' strong results are promising but carry less statistical weight due to fewer raters.