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coolvds.com › Blog › Security & Compliance

Zero-Trust Architecture on Linux: Killing the VPN Before It Kills You

· CoolVDS Team

The perimeter is dead. In a post-Schrems II world, relying on a single VPN gateway is negligence. We break down how to implement true Zero-Trust using WireGuard, mTLS, and sovereign Norwegian infrastructure.

coolvds.com › Blog › Database Management

Database Migration: Zero-Downtime Strategies for the Paranoid Sysadmin

· CoolVDS Team

Moving a live database is like performing open-heart surgery while the patient is running a marathon. Here are the battle-tested strategies for migrating critical data to Norwegian infrastructure without triggering a 500 error.

coolvds.com › Blog › DevOps & Infrastructure

Serverless on Metal: Implementing FaaS Patterns Without the Hyperscaler Tax

· CoolVDS Team

Dissecting serverless architecture patterns for Nordic enterprises. We move beyond the AWS Lambda hype to explore self-hosted FaaS on KVM, addressing GDPR compliance, latency in Norway, and the specific configurations required to make OpenFaaS sing on CoolVDS NVMe instances.

coolvds.com › Blog › DevOps & Infrastructure

Silence is Fatal: The Reality of Infrastructure Monitoring at Scale in 2022

· CoolVDS Team

Green dashboards don't mean happy users. We dissect the architecture of high-fidelity monitoring using Prometheus and Grafana, the pitfalls of standard cloud metrics, and why data sovereignty in Norway is more than just a legal checkbox.

coolvds.com › Blog › DevOps & Infrastructure

Microservices in Production: 4 Patterns to Avoid Distributed Monolithic Hell (2022 Edition)

· CoolVDS Team

Moving from monolith to microservices often results in a 'distributed monolith' that is harder to debug and slower to run. In this guide, we dissect the architectural patterns that actually work in 2022, focusing on API Gateways, resiliency, and the critical role of underlying infrastructure in the Norwegian market.

coolvds.com › Blog › Security & Compliance

Disaster Recovery for Norwegian VPS: Beyond the "3-2-1" Cliché

· CoolVDS Team

Relying on RAID is not a disaster recovery plan. In a post-Schrems II era, we explore how to architect immutable, encrypted backups for PostgreSQL on Norwegian infrastructure using BorgBackup and systemd, ensuring compliance with Datatilsynet while minimizing RTO.

coolvds.com › Blog › Database Management

Database Sharding Strategies: Architecting for Survival in High-Throughput Systems

· CoolVDS Team

Sharding is the nuclear option of scaling—complex, risky, yet necessary at a specific threshold. We dissect the architecture of horizontal partitioning, implement ProxySQL query routing, and explain why infrastructure latency in Oslo is the silent killer of distributed databases.