Articles & Guides
Useful resources for web developers and system administrators
SEO
Title and Meta Description Tags: How to Write and Check Them
How to write title and meta description tags: length in pixels, formulas and templates by page type, how to inspect yours and a competitor's, common mistakes.
Security
SSH Key Authentication: Generate, Install and Disable Password Login
How to generate an ed25519 SSH key, install it on a server, fix 700/600 permissions, disable password login and debug Permission denied (publickey) errors.
Infrastructure
Shared Hosting vs VPS vs Dedicated Server vs Cloud: What to Choose
How shared hosting, VPS, dedicated servers and cloud differ: resource isolation, limits, root access, control panels and the signs it is time to migrate.
Monitoring
High Server Load: How to Find the Cause in 15 Minutes
High server load troubleshooting: find the cause in 15 minutes — CPU, memory, disk, inodes, I/O, network and processes. Real Linux commands and a triage table.
SEO
How to Build a Semantic Core: From Keyword List to Site Structure
How to build a semantic core: seed sources, keyword operators, frequency types, cleanup, intent checks, clustering and mapping clusters to landing pages.
Security
Hosting a website for Russian users: data localisation and provider requirements
Why a Russian audience forces data residency: which sites must host locally, how the provider registry works, and how it compares with GDPR transfers.
Infrastructure
Nginx Logs: Where They Live, How to Read Them, and How to Rotate Them
Where nginx logs live, how to read the combined format, build a custom log_format, decode error.log, analyse traffic with awk and set up logrotate correctly.
Infrastructure
Nginx configuration from scratch: config files, contexts, server blocks and testing
Nginx configuration from scratch: where config files live, context hierarchy, a minimal server block, location order, proxy_pass, nginx -t and safe reload.
DNS
How to Change Your DNS Server on Windows, macOS, Linux, Android, iOS and Router
How to change the DNS server on Windows 10 and 11, macOS, Linux, Android, iOS and your router: step-by-step paths, PowerShell and resolvectl commands, verification.
Infrastructure
Free Website Hosting: What Is Actually Free and What It Really Costs
Free website hosting explained: static Git hosting, free hoster plans and cloud free tiers, what you pay with, when it is fine, and how to migrate without losses.