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coolvds.com › Blog › DevOps & Infrastructure

API Gateway Performance Tuning: Surviving the Thundering Herd in 2021

· CoolVDS Team

Stop blaming your code for latency spikes. We dive deep into Linux kernel tuning, Nginx optimization, and the critical role of NVMe storage for API gateways handling high concurrency in the post-Schrems II era.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes vs. Swarm in 2021: Stop Over-Engineering Your Infrastructure

· CoolVDS Team

It is August 2021. Everyone wants Kubernetes, but few need the headache. We benchmark orchestration overhead, analyze the Schrems II impact on hosting choices, and explain why high-IOPS NVMe is non-negotiable for etcd stability.

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 › DevOps & Infrastructure

Escaping the Lambda Trap: Self-Hosted Serverless Architectures on NVMe

· CoolVDS Team

Public cloud serverless functions are convenient until the billing shock hits or GDPR compliance becomes a nightmare. Learn how to build a high-performance, self-hosted FaaS platform using K3s and OpenFaaS on Norwegian infrastructure.

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 › DevOps & Infrastructure

Disaster Recovery in a Post-Schrems II World: A Norwegian CTO’s Playbook

· CoolVDS Team

Backups are not a strategy. Following the OVH Strasbourg fire and the Schrems II ruling, relying on luck or US cloud giants is negligence. Here is the technical blueprint for a GDPR-compliant, warm-standby disaster recovery architecture in Norway.

coolvds.com › Blog › DevOps & Infrastructure

Microservices Architecture: Survival Patterns for the Nordic DevOps

· CoolVDS Team

Monoliths are predictable. Microservices are chaos. Discover the 5 essential architectural patterns to keep your Kubernetes clusters sane, compliant with Schrems II, and performant on Nordic infrastructure.

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.