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coolvds.com › Blog › Database Management

Zero-Downtime Database Migration: The 2018 Survival Guide for Sysadmins

· CoolVDS Team

Database migrations are where careers go to die. Learn the master-slave replication strategy using MySQL 5.7 and Percona XtraBackup to migrate terabytes of data with minimal downtime, while navigating the upcoming GDPR requirements.

coolvds.com › Blog › Security & Compliance

GDPR Countdown: Automating Security Compliance on Norwegian VPS Infrastructure

· CoolVDS Team

With the May 2018 GDPR enforcement deadline approaching, manual security hardening is a liability. Learn how to automate compliance audits and server hardening on Ubuntu 16.04 using Ansible and OpenSCAP, ensuring your infrastructure satisfies Datatilsynet requirements.

coolvds.com › Blog › DevOps & Infrastructure

Cloud Cost Optimization in 2017: Escaping the Hyperscaler Price Trap

· CoolVDS Team

The cloud promise was simple: pay only for what you use. The reality? You are paying for zombie instances, unattached storage, and hidden bandwidth fees. Here is a pragmatic guide to cutting infrastructure costs by 40% without sacrificing performance.

coolvds.com › Blog › DevOps & Infrastructure

Stop Bleeding Cash: A Systems Architect’s Guide to Cloud Cost Control

· CoolVDS Team

The cloud promise of 'pay for what you use' often turns into 'pay for what you forgot to turn off'. Learn actionable strategies to slash infrastructure costs without sacrificing performance, from kernel tuning to selecting the right virtualization technology.

coolvds.com › Blog › DevOps & Infrastructure

Tuning Nginx as an API Gateway: The 2017 Guide to Sub-Millisecond Latency

· CoolVDS Team

Default configurations are the enemy of performance. In this deep dive, we strip down Nginx and the Linux kernel to handle high-concurrency API traffic, specifically targeting the unique latency profile of the Nordic infrastructure.

coolvds.com › Blog › Security & Compliance

When RAID Fails: A Battle-Tested Disaster Recovery Guide for 2017

· CoolVDS Team

RAID is not a backup. In this deep dive, we explore RTO/RPO strategies, script automated offsite backups with rsync, and discuss why data sovereignty in Norway matters more than ever before the 2018 GDPR rollout.

coolvds.com › Blog › DevOps & Infrastructure

API Gateway Performance Tuning: Nginx, Lua, and the 10ms Goal

· CoolVDS Team

A battle-hardened guide to tuning your API Gateway for maximum throughput and minimal latency using 2017's best practices. From sysctl kernel tweaks to upstream keepalives, we dissect the stack.