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coolvds.com › Blog › DevOps & Infrastructure

The Serverless Trap: Building High-Performance FaaS on Bare-Metal VPS

· CoolVDS Team

Serverless doesn't mean no servers—it usually means unpredictable bills and cold starts. Discover how to architect a private Serverless platform using K3s and OpenFaaS on high-performance NVMe infrastructure in Norway.

coolvds.com › Blog › DevOps & Infrastructure

Kernel-Level Truth: Using eBPF for Deep System Observability in 2024

· CoolVDS Team

Stop guessing why your production server is stalling. We dive deep into using eBPF tools (BCC, bpftrace) to debug latency and I/O bottlenecks on Linux, explaining why true KVM virtualization is non-negotiable for modern observability.

coolvds.com › Blog › DevOps & Infrastructure

Observability vs. Monitoring: Why Green Dashboards Lie to You

· CoolVDS Team

Monitoring tells you the server is up. Observability tells you why the checkout is slow. We dive deep into the ELK vs. LGTM stacks, GDPR implications in Norway, and why self-hosting your telemetry on CoolVDS is the only safe bet in 2024.

coolvds.com › Blog › DevOps & Infrastructure

Observability vs. Monitoring: Why Your "All Green" Dashboard is Lying to You

· CoolVDS Team

Monitoring tells you the server is up. Observability tells you why the checkout API is timing out only for users in Bergen. We dismantle the difference, architect a full LGTM stack, and explain why data sovereignty in Norway is critical for your logs.

coolvds.com › Blog › DevOps & Infrastructure

Microservices Architecture Patterns: A Nordic DevOps Perspective

· CoolVDS Team

Monolithic apps are safe. Microservices are a distributed network nightmare waiting to happen. Here is how to architect for resilience, low latency, and GDPR compliance using patterns that actually work in production environments.

coolvds.com › Blog › DevOps & Infrastructure

Microservices Architecture Patterns: A Field Guide for High-Stakes Deployments

· CoolVDS Team

Monoliths are safe; microservices are a distributed headache waiting to happen. Learn the battle-tested patterns—from Circuit Breakers to Sagas—that keep architecture resilient, and why hardware latency is the silent killer of distributed systems in Norway.

coolvds.com › Blog › DevOps & Infrastructure

Serverless Patterns Without the Bill Shock: Self-Hosted FaaS on KVM

· CoolVDS Team

Stop overpaying for AWS Lambda cold starts and egress fees. Learn how to deploy a GDPR-compliant, low-latency OpenFaaS cluster on CoolVDS using K3s and NVMe storage for maximum throughput in Norway.

coolvds.com › Blog › DevOps & Infrastructure

Surviving the Microservices Hype: Patterns That Won't Wake You at 3 AM

· CoolVDS Team

Microservices solve scalability but introduce network chaos. Here are three battle-tested architecture patterns—Gateway Aggregation, Circuit Breaking, and Async Eventing—that prevent distributed monolith disasters. Written for the Norwegian DevOps engineer dealing with GDPR and latency constraints.

coolvds.com › Blog › DevOps & Infrastructure

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

· CoolVDS Team

Your dashboard says 200 OK, but users are seeing timeouts. We dissect the critical difference between monitoring and observability, focusing on the "unknown unknowns," with practical config examples for Prometheus, Loki, and OpenTelemetry on Norwegian infrastructure.