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coolvds.com › Blog › DevOps & Infrastructure

Surviving the Split: Battle-Tested Microservices Patterns for 2021

· CoolVDS Team

Monoliths are safe; microservices are a distributed headache waiting to happen. Learn the architecture patterns—from Circuit Breakers to Sagas—that keep your cluster alive, and why infrastructure latency in Norway is your biggest hidden bottleneck.

coolvds.com › Blog › Database Management

Zero-Downtime Database Migration: A Survival Guide for Norwegian DevOps

· CoolVDS Team

Migrating a production database shouldn't feel like defusing a bomb. Learn battle-tested replication strategies, specific config tuning for MySQL 8 and PostgreSQL 13, and how to navigate GDPR/Schrems II requirements while keeping your data on Norwegian soil.

coolvds.com › Blog › Database Management

Database Sharding Architectures: When Vertical Scaling Fails and How to Survive the Split

· CoolVDS Team

Sharding is the nuclear option of database scaling. It introduces complexity, latency, and maintenance nightmares. But when your primary key integer overflows and your IOPS hit the ceiling, it's the only path left. Here is the battle-tested guide to implementing sharding on high-performance infrastructure without losing data.

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

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

Orchestration Wars: Kubernetes vs. Swarm vs. Nomad in a Post-Schrems II World

· CoolVDS Team

It is late 2020. Kubernetes has won the marketing war, but does your architecture actually require that level of complexity? We analyze the trade-offs between K8s, Docker Swarm, and HashiCorp Nomad, focusing on overhead, persistence, and why running these on compliant Norwegian NVMe VPS is critical for GDPR.