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coolvds.com › Blog › DevOps & Infrastructure

Kubernetes Networking Deep Dive: Surviving the Overlay Chaos

· CoolVDS Team

Kubernetes networking is leaky abstraction. We dissect CNI choices, eBPF vs. iptables performance, and why your underlying VPS infrastructure dictates cluster stability.

coolvds.com › Blog › Security & Compliance

The Perimeter is Dead: Implementing Zero-Trust Infrastructure in a Post-Schrems II World

· CoolVDS Team

The 'Castle and Moat' security model failed spectacularly in 2020. With the recent SolarWinds fallout and strict GDPR enforcement in Norway, relying on a simple VPN is negligence. Here is how to architect true Zero-Trust using WireGuard, mTLS, and compliant Norwegian infrastructure.

coolvds.com › Blog › DevOps & Infrastructure

Serverless Architecture on Bare Metal: Escaping the Vendor Trap in 2021

· CoolVDS Team

Public cloud serverless functions offer convenience at the cost of control and compliance. Learn how to deploy a high-performance, GDPR-compliant FaaS platform on Norwegian infrastructure using OpenFaaS and Kubernetes.

coolvds.com › Blog › DevOps & Infrastructure

Container Security in 2020: Surviving the Wild West of Microservices

· CoolVDS Team

Container isolation is a myth if you're running as root. In this deep dive, we dismantle common Docker security failures, analyze the impact of Schrems II on your hosting choices, and show you how to lock down your stack before it hits production.

coolvds.com › Blog › AI & Machine Learning

Edge ML in Norway: Deploying Low-Latency Inference while Surviving Schrems II

· CoolVDS Team

Cloud latency kills real-time AI. In the wake of the Schrems II ruling, moving inference to the edge isn't just about performance—it's about compliance. Here is the 2020 architecture for deploying quantized TensorFlow models on Norwegian infrastructure.

coolvds.com › Blog › Performance Optimization

API Gateway Optimization: Crushing Latency on High-Traffic Nodes

· CoolVDS Team

Your API Gateway is likely the bottleneck you haven't tuned. We dive deep into Linux kernel adjustments, NGINX upstream keepalives, and why NVMe I/O is non-negotiable for low-latency routing in 2020.

coolvds.com › Blog › Database Management

Database Sharding Strategies: Breaking the Monolith Without Breaking Production

· CoolVDS Team

Vertical scaling has a ceiling. When your InnoDB buffer pool exceeds physical RAM and NVMe I/O waits spike, it is time to talk about sharding. We explore application-level versus middleware-based sharding strategies relevant for high-traffic European workloads in 2020.

coolvds.com › Blog › Security & Compliance

Building a Zero-Trust Bastion: Why the Perimeter is Dead (and How to Fix It)

· CoolVDS Team

The 'castle and moat' security model failed the moment your team went remote in 2020. Here is a battle-tested guide to implementing Zero-Trust architecture on Linux using WireGuard, Nginx mTLS, and rigorous kernel hardening, specifically tailored for Norwegian data sovereignty.

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 › 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.