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coolvds.com › Blog › Database Management

Zero-Downtime Database Migration: A DevOps Survival Guide for 2021

· CoolVDS Team

Migrating production databases is high-risk. Learn battle-tested strategies for MySQL and PostgreSQL migrations, covering replication, NVMe performance tuning, and Norwegian data compliance (GDPR/Schrems II).

coolvds.com › Blog › DevOps & Infrastructure

Observability vs Monitoring: Stop Staring at CPU Graphs While Your App Burns

· CoolVDS Team

Monitoring tells you the server is up; observability tells you why the checkout button is broken for users in Bergen. We dissect the difference, the tech stack (Prometheus, ELK, Jaeger), and why high-IOPS infrastructure is non-negotiable for data-heavy tracing.

coolvds.com › Blog › Performance Optimization

API Gateway Tuning: Squeezing Microseconds Out of Nginx & Kong in 2021

· CoolVDS Team

Stop blaming your backend code for high latency. Learn how to tune kernel parameters, optimize Nginx workers, and leverage NVMe-backed KVM instances to handle 10k+ RPS with sub-millisecond overhead in a post-Schrems II landscape.

coolvds.com › Blog › DevOps & Infrastructure

Preparing for the API Apocalypse: Kubernetes 1.22 Deprecations & The End of v1beta1

· CoolVDS Team

Kubernetes 1.22 is scheduled for release later this year, and it brings a hard stop to many beta APIs. If your Ingress or CRD manifests still use legacy versions, your deployments will fail. Here is a battle-plan for Norwegian DevOps teams to migrate before the deadline.

coolvds.com › Blog › Performance Optimization

APM Deep Dive: Why Your Uptime Monitor Is Lying to You

· CoolVDS Team

Ping checks aren't enough. In 2021, professional grade monitoring requires observability into system calls, database latencies, and sovereignty over your metrics. Here is how to build a robust APM stack on Norwegian infrastructure.

coolvds.com › Blog › DevOps & Infrastructure

Self-Hosted APM: A GDPR-Safe Architecture for High-Performance Tracing

· CoolVDS Team

Stop relying on US-based SaaS for observability. Learn how to deploy a production-ready, self-hosted Elastic APM stack on NVMe infrastructure to satisfy Norwegian data sovereignty laws while debugging microservices latency.

coolvds.com › Blog › DevOps & Infrastructure

Cloud Cost Optimization: Escaping the Hyperscaler Tax in 2021

· CoolVDS Team

Is your AWS bill growing faster than your user base? We analyze the hidden costs of cloud infrastructure, from egress fees to IOPS limits, and detail how moving workloads to Norwegian KVM instances can slash TCO while solving Schrems II compliance headaches.

coolvds.com › Blog › DevOps & Infrastructure

Surviving the Spike: High-Fidelity Infrastructure Monitoring at Scale

· CoolVDS Team

Most monitoring setups fail exactly when you need them: during high-load incidents. Here is how to architect a resilient Prometheus and Grafana stack on dedicated NVMe resources, ensuring visibility when the rest of the world goes dark.

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.