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coolvds.com › Blog › DevOps & Infrastructure

Stop Watching, Start Asking: Why Monitoring Fails and Observability Saves Production

· CoolVDS Team

Monitoring tells you the server is up. Observability tells you why the checkout failed for a user in Bergen on an iPhone 8. We dissect the critical difference, provide implementation code for 2021's stack (Prometheus, Jaeger, ELK), and explain why infrastructure choice dictates your debugging speed.

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

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

Silence the Noise: A Pragmatic Guide to Infrastructure Monitoring at Scale

· CoolVDS Team

Stop relying on passive ping checks. This guide details how to architect a robust Prometheus and Grafana stack for high-traffic environments, handling NVMe I/O bottlenecks and ensuring GDPR compliance in the post-Schrems II era.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking Deep Dive: Surviving the Overlay Network Tax

· CoolVDS Team

Kubernetes networking is often treated as a black box until production latency spikes. We analyze CNI choices, IPVS vs iptables, and why underlying hardware stability is critical for overlay networks in the post-Schrems II era.

coolvds.com › Blog › DevOps & Infrastructure

Beyond Green Dashboards: Why Monitoring Fails and Observability Saves Your Stack

· CoolVDS Team

It is late 2020. Stop relying on simple ping checks and CPU graphs. We break down the architectural shift from Monitoring to Observability, how to handle high-cardinality data without crashing your budget, and why Schrems II makes self-hosting your metrics in Norway a legal necessity.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes vs. Docker Swarm: The 2021 Infrastructure Reality Check

· CoolVDS Team

With Kubernetes 1.20 deprecating Docker support, the orchestration wars are heating up again. We dissect the trade-offs between K8s complexity and Swarm simplicity, while proving why underlying NVMe storage is the only metric that truly matters for cluster stability.

coolvds.com › Blog › DevOps & Infrastructure

API Gateway Latency: Tuning Nginx for Sub-Millisecond Performance

· CoolVDS Team

Is your API gateway becoming a bottleneck? Learn how to tune the Linux kernel and Nginx for high-throughput, low-latency traffic. We cover file descriptors, TCP stack optimization, and why hardware selection matters more than code in 2020.

coolvds.com › Blog › DevOps & Infrastructure

Container Security in 2021: Why Your Dockerfile is a Liability

· CoolVDS Team

It is late 2020, and running containers as root is still the industry's most dangerous habit. From dropping capabilities to navigating the post-Schrems II landscape in Norway, here is how to lock down your infrastructure before the next CVE hits.

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.