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coolvds.com › Blog › DevOps & Infrastructure

Stop Praying for Uptime: Bulletproof Load Balancing with HAProxy

· CoolVDS Team

Discover how to scale your infrastructure using HAProxy on Linux. We dive into configuration strategies, session persistence, and why hardware isolation matters for high-traffic Norwegian sites.

coolvds.com › Blog › DevOps & Infrastructure

Cloud Storage in 2011: Why Latency and Shared SANs Are Killing Your Web App

· CoolVDS Team

It is 2011, and the 'Cloud' buzzword is everywhere. But for systems architects, the reality is often high I/O wait and unpredictable performance. We explore why local RAID 10 storage beats centralized SANs and how to tune your Linux stack for speed.

coolvds.com › Blog › Server Administration

Xen vs. KVM: Why Kernel Integration Wars Define Your VPS Performance

· CoolVDS Team

Red Hat Enterprise Linux 6 has shifted the battlefield from Xen to KVM. We analyze the kernel-level differences, I/O scheduling, and why 'containers' like OpenVZ might be killing your database performance.

coolvds.com › Blog › Server Administration

Why RHEL 6 Dropped Xen: The Case for KVM in Production Environments

· CoolVDS Team

OpenVZ containers are lying to you about RAM. With Red Hat's recent shift to KVM in Enterprise Linux 6, the era of oversold virtualization is ending. Here is how to configure KVM for true hardware isolation and low latency in Norway.

coolvds.com › Blog › Database Management

Stop Blaming PHP: Why Your MySQL 5.5 Config is the Real Bottleneck

· CoolVDS Team

Is your web application crawling during peak hours? Before you rewrite your code, look at your database configuration. We analyze how to tune MySQL 5.5 on Linux for maximum throughput and why disk I/O is usually the culprit.