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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 › DevOps & Infrastructure

API Gateway Performance Tuning: Surviving the Thundering Herd in 2020

· CoolVDS Team

Default configurations are the enemy of scale. We dissect the Linux kernel and Nginx settings required to handle 10k+ RPS without melting your CPU, specifically tailored for the Nordic infrastructure landscape.

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 users in Bergen. We break down the technical differences, the 2020 stack (Prometheus, ELK, Jaeger), and why infrastructure matters.

coolvds.com › Blog › Security & Compliance

Stop Running as Root: The 2020 Guide to Hardening Containers in Production

· CoolVDS Team

Container isolation is a myth if you stick to defaults. From dropping kernel capabilities to managing secrets without environment variables, here is the battle-tested guide to securing your infrastructure against runC exploits and privilege escalation.