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coolvds.com › Blog › Performance Optimization

PCIe 4.0 NVMe: The Throughput Upgrade Your Database is Begging For

· CoolVDS Team

Stop blaming your CPU. In 2021, the real bottleneck for high-load applications is storage I/O. We analyze the leap to PCIe 4.0, specific Linux kernel tuning for NVMe, and why physical proximity to the NIX in Oslo matters for total system latency.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking Deep Dive: Surviving the Overlay Chaos

· CoolVDS Team

Kubernetes networking is leaky abstraction. We dissect CNI choices, eBPF vs. iptables performance, and why your underlying VPS infrastructure dictates cluster stability.

coolvds.com › Blog › Database Management

Database Sharding Architectures: Scaling Beyond the Monolith in 2021

· CoolVDS Team

Vertical scaling has a ceiling. When your NVMe storage is saturated and connections hang, it's time to shard. This guide covers practical sharding strategies for MySQL and PostgreSQL, specifically tailored for high-availability setups in the Nordic region.

coolvds.com › Blog › DevOps & Infrastructure

Disaster Recovery in 2021: Surviving Schrems II and Server Failures

· CoolVDS Team

Post-Schrems II, your disaster recovery plan isn't just about uptime—it's about sovereignty. Here is how to architect a compliant, low-latency DR strategy in Norway using Ansible, Restic, and NVMe infrastructure.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking in 2021: Surviving the Packet Jungle and Schrems II

· CoolVDS Team

A battle-hardened guide to navigating CNI choices, debugging DNS latency, and ensuring GDPR compliance post-Schrems II. We dissect Calico vs. Cilium, optimize NGINX Ingress, and explain why your underlying infrastructure dictates network performance.