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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

Observability vs. Monitoring: Why Green Dashboards Are Lying to You

· CoolVDS Team

Monitoring tells you the server is up. Observability tells you why the checkout is failing for 1% of users in Oslo. We dissect the 'Three Pillars' stack (Prometheus, ELK, Jaeger) and why infrastructure ownership is the root of true visibility.

coolvds.com › Blog › DevOps & Infrastructure

Observability vs Monitoring: Why Your Green Dashboards Are Lying to You

· CoolVDS Team

Monitoring tells you the server is up. Observability tells you why the API latency just spiked by 400ms. A 2020 guide for Nordic DevOps engineers on moving from "Green/Red" lights to deep system insights using Prometheus, ELK, and proper infrastructure.

coolvds.com › Blog › DevOps & Infrastructure

Escaping the Public Cloud Tax: High-Performance MinIO on Kubernetes

· CoolVDS Team

Stop bleeding money on egress fees. Learn how to deploy a production-ready, S3-compatible object storage layer using MinIO on Kubernetes, optimized for local NVMe performance and Norwegian data sovereignty.

coolvds.com › Blog › Security & Compliance

Kill the VPN: A Pragmatic Guide to Zero-Trust Networking on Linux

· CoolVDS Team

The 'castle-and-moat' security model is dead. Learn how to implement SSH Certificates, mTLS, and WireGuard to build a Zero-Trust architecture that keeps your Norwegian infrastructure compliant and secure.

coolvds.com › Blog › DevOps & Infrastructure

Serverless Without the Lock-in: Architecture Patterns for 2020

· CoolVDS Team

While AWS Lambda and Azure Functions dominate the headlines, pragmatic architects are looking at self-hosted FaaS on high-performance VPS to solve latency and GDPR challenges. Here is how to build it.

coolvds.com › Blog › DevOps & Infrastructure

Stop the Bleeding: A Pragmatic Guide to Cloud Cost Control in 2020

· CoolVDS Team

While the promise of 'pay-as-you-go' sounded perfect, the reality for many Norwegian CTOs is unpredictable billing and hidden egress fees. Here is how to audit your infrastructure, reclaim wasted resources, and why fixed-cost NVMe performance is the stabilizer your budget needs.

coolvds.com › Blog › Performance Optimization

Squeezing the Kernel: Advanced API Gateway Tuning for < 10ms Latency

· CoolVDS Team

Default configurations are killing your API performance. We dive deep into NGINX worker settings, Linux kernel TCP hardening, and why NVMe storage is non-negotiable for high-throughput gateways in 2020.

coolvds.com › Blog › DevOps & Infrastructure

Crushing API Latency: Gateway Tuning from the Oslo Trenches

· CoolVDS Team

Latency isn't just a metric; it's a business killer. Learn how to tune the Linux kernel and Nginx for high-throughput API gateways, and why hardware isolation is your only defense against jitter.

coolvds.com › Blog › DevOps & Infrastructure

Stop Guessing: The Art of Brutally Honest Application Performance Monitoring

· CoolVDS Team

CPU graphs lie. In 2020, 'it works on my machine' is a fireable offense. We dissect the Golden Signals of monitoring, configuring Prometheus on Ubuntu 18.04, and why placing your data in Norway is a latency imperative, not just a legal one.

coolvds.com › Blog › DevOps & Infrastructure

Monitoring at Scale: Why Your "Green" Dashboard is Lying to You

· CoolVDS Team

Standard uptime checks won't save you from the 3 AM PagerDuty call. We dive deep into Prometheus architecture, the RED method, and why NVMe storage is critical for time-series data integrity in 2020.

coolvds.com › Blog › DevOps & Infrastructure

Kubernetes vs. Docker Swarm in 2020: A Norwegian Sysadmin’s Reality Check

· CoolVDS Team

It’s 2020. Kubernetes won the war, but Docker Swarm is still fighting for the small battles. We analyze the orchestration landscape, the critical role of NVMe storage for etcd stability, and why data residency in Norway matters more than ever.

coolvds.com › Blog › Technology Trends

Redis 6.0 RC1: Multi-Threading, ACLs, and the End of Stunnel

· CoolVDS Team

The first Release Candidate for Redis 6.0 dropped yesterday. We benchmark the new multi-threaded I/O, explore granular Access Control Lists (ACLs), and explain why your Nordic infrastructure needs to prepare for this shift in 2020.

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 › 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.