VPS know-how & server operations
Tutorials, optimization and server operations for developers and sysadmins. Practical, concise, and well-sourced.
How much RAM does a WordPress VPS need in 2026
A practical RAM sizing guide for a WordPress VPS, with real numbers for 1 GB, 2 GB, 4 GB and 8 GB plans, and how to check what your site actually uses.
VPS vs dedicated server which one do I need
So sánh VPS và dedicated server dựa trên chi phí, hiệu năng, khả năng mở rộng và bảo trì để xác định lựa chọn phù hợp cho dự án của bạn.
VPS vs shared hosting for a growing website
So sánh VPS và shared hosting cho website đang tăng trưởng: khi nào cần nâng cấp, khác biệt về tài nguyên, root access, hiệu năng và chi phí cho nhà phát triển.
How to Enable Swap on a Low-RAM VPS
A practical guide to adding swap space on a low-RAM VPS so Linux stops killing processes, with exact commands and verification steps for Ubuntu 24.04 and Debian 12.
How to benchmark NVMe disk speed on a VPS
A practical guide to benchmarking NVMe disk speed on a VPS with fio and dd. Learn the exact commands, how to read the metrics, and why testing with fio's keep-io-depth matters.
Why my VPS runs out of RAM and how to fix it
Find why your VPS runs out of RAM, diagnose top memory consumers, and reclaim gigabytes with practical fixes for Ubuntu 24.04 and Debian 12.
How to reduce memory usage on a Linux VPS
Learn how to reduce memory usage on a Linux VPS with practical steps: tuning MySQL/MariaDB, optimizing PHP-FPM, configuring swap, and identifying RAM hogs.
How to tune MySQL for a low-RAM VPS
Cut MySQL memory usage on a 1GB-2GB VPS: buffer pool, per-session buffers, performance_schema, swap. Run it on Ubuntu 24.04 with verify commands.
How to install and configure Redis on a Linux VPS
Step-by-step guide to install Redis on an Ubuntu 24.04 VPS: apt install, systemd, persistence, security, firewall and verify steps for production use.
Install WordPress on a LiteSpeed VPS in 2026
Step-by-step guide to install WordPress on a LiteSpeed VPS: install LiteSpeed, PHP 8.3, MariaDB, configure LSCache and secure the site.
Configure logrotate and manage logs on a VPS
A practical guide to setting up logrotate on a Linux VPS: configure rotation intervals, compression, and retention, then verify it works. Prevents disk-full outages.
Configure Varnish Cache in Front of a Web Server on Ubuntu 24.04
Hướng dẫn chi tiết cấu hình Varnish cache reverse proxy trước Nginx/Apache trên Ubuntu 24.04 VPS: cài đặt, tinh chỉnh RAM, logging, tối ưu TTFB và xử lý lỗi phổ biến.
VPS Performance Benchmarking with fio sysbench iperf3
Learn how to benchmark a VPS with fio, sysbench, and iperf3 to measure disk, CPU, and network performance. Includes actionable commands and real verification steps.