On a VPS, disk I/O is usually the first performance wall you hit. CPU and RAM are easy to reason about, but storage performance depends on the host’s hardware, the…
Read MoreCaddy vs Nginx vs Apache on a VPS: Configuration, TLS, and Performance Compared
Nginx, Apache, and Caddy are the three web servers you will most often encounter on a VPS, and they take very different approaches to the same job. Apache remains the…
Read MoreMonitoring with Prometheus and Grafana on a VPS: Metrics Collection for Small Deployments
You do not need a commercial monitoring platform to keep an eye on a small VPS. Prometheus and Grafana together form a complete, self-hosted metrics stack: Prometheus scrapes and stores…
Read MoreHow to Monitor VPS CPU, RAM, and Disk Usage in Real Time
When a VPS slows down, the first question is always the same: what is consuming the CPU, RAM, or disk right now? Guessing wastes time — the Linux kernel already…
Read MoreSwapfile vs zram on a VPS: Setup, Monitoring, and Swappiness
Swap is the emergency reservoir Linux uses when physical RAM runs out — and on a VPS it is either a lifesaver or the thing that makes your server feel…
Read MoreNginx FastCGI Cache and Microcaching on a VPS: Configs for Dynamic Sites
Every PHP request on a typical WordPress or Laravel VPS spends 100–300 ms in PHP-FPM even when the rendered page barely changes. Nginx’s fastcgi_cache stores the finished HTML and serves…
Read Moresystemd Service Hardening: Sandboxing, Capabilities, and Resource Limits
A freshly installed service on Ubuntu 24.04 typically scores 8–9 on systemd-analyze security — marked EXPOSED — because the default unit grants full filesystem, network, and capability access. The same…
Read MoreZero-Downtime Deploys on a Single VPS: systemd, Blue-Green, and Rollback
A plain systemctl restart app drops every in-flight request, closes established connections, and leaves a visible gap in your error log. On a single VPS you cannot spin up a…
Read MoreSetting Up a Mail Server on a VPS: Postfix and Dovecot with SPF, DKIM, and DMARC
Sending mail from a VPS without authentication setup is a one-way ticket to the spam folder: receiving servers check your IP’s reverse DNS, your SPF record, and your DKIM signature…
Read MoreDocker Resource Limits and cgroup Tuning on a VPS: Keep One Container from Starving the Host
Containers on a VPS share the host kernel — and the host’s CPU, memory, and I/O. The classic failure mode: a single container with a memory leak or a runaway…
Read More