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coolvds.com › Blog › DevOps & Infrastructure

Stop Guessing: A Battle-Hardened Guide to APM and Infrastructure Visibility in 2019

· CoolVDS Team

Is your application slow, or is it the network? In this deep dive, we move beyond 'top' and implement a full Prometheus + Grafana stack on Ubuntu 18.04. We analyze disk I/O latency, debug MySQL bottlenecks, and explain why hosting location in Norway matters for your metrics.

coolvds.com › Blog › DevOps & Infrastructure

Microservices in Production: 3 Architecture Patterns That Actually Work (2019 Edition)

· CoolVDS Team

Moving from monolith to microservices introduces network complexity that can kill performance. We analyze three battle-tested patterns—API Gateways, Circuit Breakers, and Asynchronous Eventing—and explain why underlying hardware latency is the silent killer of distributed systems.

coolvds.com › Blog › DevOps & Infrastructure

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

· CoolVDS Team

It's 2019, and 'green' dashboards don't mean happy users. We dissect the critical shift from passive monitoring to active observability, covering the ELK stack, Prometheus, and why high-cardinality data demands the NVMe performance found in CoolVDS infrastructure.

coolvds.com › Blog › DevOps & Infrastructure

Deconstructing Microservices: Architecture Patterns for High-Performance Infrastructure

· CoolVDS Team

Microservices aren't a silver bullet; they're a complex trade-off between agility and operational chaos. This guide explores the critical patterns—API Gateways, Circuit Breakers, and Service Discovery—needed to survive the transition in 2019, specifically within the context of Nordic network constraints.

coolvds.com › Blog › DevOps & Infrastructure

GitOps Architectures in 2019: Killing Manual Deployments on Kubernetes

· CoolVDS Team

Stop SSH-ing into your servers. In this deep dive, we explore why Pull-based GitOps workflows using Flux and Helm are the only scalable way to manage Kubernetes clusters in compliance-heavy Norwegian environments.

coolvds.com › Blog › DevOps & Infrastructure

API Gateway Tuning: Squeezing Milliseconds Out of Nginx & Kong on Linux

· CoolVDS Team

Default Linux settings are killing your API performance. In this deep dive, we strip down the kernel, optimize Nginx upstreams, and discuss why hardware isolation matters for low-latency implementations in the Nordic region.

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.