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coolvds.com › Blog › Database Management

Database Sharding Strategies: Surviving the Write Cliff in 2021

· CoolVDS Team

When vertical scaling hits a wall, sharding is the only way forward. We explore practical strategies for splitting your database while maintaining ACID compliance, minimizing latency, and adhering to strict Norwegian data sovereignty laws.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking Deep Dive: Surviving the Packet Jungle in 2021

· CoolVDS Team

A battle-hardened look at K8s networking internals, CNI choices, and reducing latency for Norwegian deployments. We dissect overlays, BGP, and why underlying infrastructure dictates your cluster's fate.

coolvds.com › Blog › Database Management

Database Sharding Architectures: Scaling Beyond the Monolith in 2021

· CoolVDS Team

Vertical scaling has a ceiling. When your NVMe storage is saturated and connections hang, it's time to shard. This guide covers practical sharding strategies for MySQL and PostgreSQL, specifically tailored for high-availability setups in the Nordic region.

coolvds.com › Blog › DevOps & Infrastructure

Serverless Without the Cloud Tax: Self-Hosted FaaS Patterns for Nordic Ops

· CoolVDS Team

Public cloud serverless functions promise simplicity but often deliver latency spikes and unpredictable bills. We explore architectural patterns for running OpenFaaS on high-performance NVMe VPS, combining the developer experience of serverless with the cost-control and GDPR compliance of private infrastructure.

coolvds.com › Blog › DevOps & Infrastructure

Container Security in 2019: Stop Running Docker as Root or Get Hacked

· CoolVDS Team

It's late 2019, and the 'runc' vulnerability is still haunting production environments. Here is a battle-hardened guide to locking down containers, managing capabilities, and why the underlying hardware in Oslo matters more than you think.

coolvds.com › Blog › Security & Compliance

Disaster Recovery in 2018: Surviving Data Loss and GDPR in Norway

· CoolVDS Team

It is July 2018. GDPR is in full effect. Is your disaster recovery plan compliant and battle-tested, or just a PDF gathering dust? We dissect real-world recovery strategies using KVM and NVMe storage.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking Deep Dive: Escaping iptables Hell in 2018

· CoolVDS Team

Overlay networks, CNI plugins, and the shift to IPVS. We dissect the packet flow in Kubernetes v1.10 and explain why low-latency infrastructure is non-negotiable for production clusters post-GDPR.

coolvds.com › Blog › DevOps & Infrastructure

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

· CoolVDS Team

It is May 2018. Nagios says your server is fine, but customers in Trondheim are timing out. Here is why traditional monitoring is dead, how to build an observability stack with Prometheus and ELK, and why infrastructure sovereignty in Norway is your safety net before GDPR hits later this month.

coolvds.com › Blog › DevOps & Infrastructure

Observability vs Monitoring: Why Your Green Dashboard is Lying to You

· CoolVDS Team

In 2017, seeing 'OK' on Nagios isn't enough. Discover why high-performance DevOps teams in Norway are shifting from passive monitoring to active observability using ELK, Prometheus, and KVM-backed infrastructure.