Servers
How to Set Up an Nginx FastCGI Cache for WordPress on a Small Server
How to add a FastCGI page cache to a small WordPress blog on Nginx, with bypass rules, an X-Cache header, real timings and a safe rollback.
Servers
Linux server administration for hosting: memory, CPU and disk diagnostics, Nginx, PHP-FPM, databases and capacity planning.
Servers
How to Diagnose Memory Pressure on Linux
How to tell real memory pressure from normal Linux caching, with real free, vmstat and PSI output from a 1 GB production server.
Servers
How to Optimize MySQL and MariaDB on a Low-RAM WordPress Server
A measure-first guide to tuning MySQL or MariaDB on a small WordPress server without risking your data or your uptime.
Servers
How to Optimize PHP-FPM Workers for Limited RAM
A practical guide to sizing PHP-FPM workers on a low-RAM server, using real PSS measurements from a 1 GB production server.