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coolvds.com › Blog › Database Management

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

· CoolVDS Team

Database migration is the most dangerous operation in DevOps. This guide covers replication strategies, Schrems II compliance, and kernel-level optimizations to move data to Norwegian soil without dropping a single packet.

coolvds.com › Blog › Database Management

Database Sharding: The Nuclear Option for High-Traffic Apps in 2019

· CoolVDS Team

Sharding is complex, dangerous, and sometimes inevitable. We break down when to split your database, how to implement consistent hashing without losing your mind, and why infrastructure latency in Oslo matters more than your schema design.

coolvds.com › Blog › DevOps & Infrastructure

Observability vs Monitoring: Why Green Dashboards Lie (And How to Fix It)

· CoolVDS Team

It is April 2019. Your Nagios checks are green, but customers are churning. We dissect the critical difference between monitoring uptime and observing system behavior, featuring Prometheus, ELK, and the infrastructure required to run them.

coolvds.com › Blog › DevOps & Infrastructure

Slash Your Build Times: A Battle-Hardened Guide to CI/CD Optimization

· CoolVDS Team

Is your pipeline stuck in 'pending'? We dissect the I/O bottlenecks killing your deployment speed, explore 2018's best Docker caching strategies, and explain why hardware location in Norway matters for your dev loop.

coolvds.com › Blog › Security & Compliance

The CLOUD Act, GDPR, and Your Latency: Why Hybrid Cloud is Norway's Only Safe Bet

· CoolVDS Team

With the US CLOUD Act signed and GDPR enforcement just 28 days away, relying solely on AWS or Azure is now a compliance minefield. Here is the pragmatic architect's guide to a hybrid strategy that keeps your data sovereign in Oslo and your latency under 3ms.

coolvds.com › Blog › DevOps & Infrastructure

Observability vs Monitoring: Why Your "All Systems Green" Dashboard is a Lie

· Pavel Dvořák

It is June 2016. Microservices are rising, but your Nagios checks are stuck in 2010. Learn why traditional monitoring fails to catch latency spikes and how to build true observability using ELK and StatsD on high-performance infrastructure.

coolvds.com › Blog › DevOps & Infrastructure

Latency Kills: Why Centralized Cloud Fails Nordic Users (and How to Fix It)

· CoolVDS Team

Physics doesn't negotiate. While major cloud providers push centralized regions in Frankfurt or Ireland, Norwegian users pay the price in latency. Here is a battle-tested guide to deploying 'Edge' infrastructure using distributed KVM VPS instances in Oslo.

coolvds.com › Blog › DevOps & Infrastructure

Docker in Production: Surviving the Orchestration Wars of 2015

· CoolVDS Team

Docker 1.9 just changed the game, but managing containers at scale is still a battlefield. We pit Kubernetes 1.1 against Swarm and Mesos to find the best stack for Norwegian infrastructure post-Safe Harbor.

coolvds.com › Blog › DevOps & Infrastructure

Stop SSH-ing into Production: The Git-Driven Infrastructure Workflow

· CoolVDS Team

Manual server tweaks are a ticking time bomb. We explore how to implement a 'Source of Truth' workflow using Git, Jenkins, and Ansible to automate deployments on high-performance Norwegian VPS infrastructure.