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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 › DevOps & Infrastructure

CI/CD Pipelines Are Dying on Cheap Disk I/O: A 2022 Survival Guide

· CoolVDS Team

Slow builds aren't just annoying; they bleed budget. Discover how to identify I/O bottlenecks, optimize Docker layer caching, and why NVMe storage is non-negotiable for serious DevOps in the Nordic market.

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.

coolvds.com › Blog › Security & Compliance

Zero-Trust Architecture: Imploding the Perimeter on Linux Infrastructure

· CoolVDS Team

The castle-and-moat security model is obsolete. Learn how to implement a true Zero-Trust network using WireGuard, mTLS, and strict firewalling on Norwegian infrastructure, ensuring compliance with Schrems II while maintaining low latency.

coolvds.com › Blog › DevOps & Infrastructure

Observability vs. Monitoring: Why Your Green Dashboard Is Lying to You

· CoolVDS Team

It's 3 AM. Your dashboard shows all systems green, but customers are screaming about 502 errors. This is the monitoring gap. We dissect the critical shift from 'checking health' to 'understanding behavior' in a post-Schrems II world.

coolvds.com › Blog › DevOps & Infrastructure

Stop Watching, Start Asking: Why Monitoring Fails and Observability Saves Production

· CoolVDS Team

Monitoring tells you the server is up. Observability tells you why the checkout failed for a user in Bergen on an iPhone 8. We dissect the critical difference, provide implementation code for 2021's stack (Prometheus, Jaeger, ELK), and explain why infrastructure choice dictates your debugging speed.

coolvds.com › Blog › DevOps & Infrastructure

Database Migration War Games: Strategies for Zero Downtime in 2021

· CoolVDS Team

A battle-hardened DevOps guide to migrating high-load databases without losing data or sleep. We cover replication strategies, specific config tuning, and why local NVMe storage in Norway is your safety net.

coolvds.com › Blog › DevOps & Infrastructure

Optimizing CI/CD Pipelines: Reducing Build Latency on Norwegian Infrastructure

· CoolVDS Team

Slow pipelines kill developer momentum. Learn how to crush build times by targeting the hidden bottleneck: Disk I/O. We analyze Docker caching strategies, self-hosted GitLab runners, and why NVMe storage in Oslo is your best compliance strategy post-Schrems II.