Having 12+ Years of Experience in Software Development
Prerequisites and Initial Setup for Ubuntu 24.04 LTS This guide assumes you have a fresh Ubuntu 24.04 LTS (Noble Numbat) server instance. Ensure you have root or sudo privileges. Before proceeding, update your package lists and upgrade existing packages to their latest versions. This is crucial for security and compatibility. Next, we need to install […]
Prerequisites and Initial Setup This guide assumes a fresh RHEL 9 installation with root or sudo privileges. We’ll be setting up a robust, isolated multisite WordPress environment leveraging Nginx’s powerful `map` directive for efficient virtual host routing. This approach is highly scalable and simplifies management compared to traditional per-site Nginx configuration files. Ensure the following […]
Diagnosing wp_cron Failures WordPress’s built-in scheduler, wp_cron, is a critical component for tasks like publishing scheduled posts, checking for updates, and running various plugin/theme hooks. When wp_cron fails to execute reliably, it can lead to a cascade of operational issues. Common symptoms include scheduled posts not publishing, plugin notifications not appearing, and general site sluggishness […]
Assessing the PHP 8.3 Upgrade Impact on WordPress Child Themes Migrating a WordPress environment from PHP 7.4 to PHP 8.3, especially when dealing with custom child themes, necessitates a thorough review of theme code. PHP 8.x introduced stricter type checking, new features, and deprecated older functionalities. Child themes, often built incrementally over time, can accumulate […]
MariaDB Query Cache Deprecation and InnoDB Buffer Pool Tuning As of MariaDB 10.0, the Query Cache has been deprecated and removed entirely in MariaDB 10.5. For WordPress sites on Debian 12 Bookworm running MariaDB, relying on the Query Cache for performance optimization is a relic of the past. The focus must shift entirely to the […]
Nginx FastCGI Cache Configuration for WooCommerce Optimizing Nginx’s FastCGI cache is paramount for high-traffic WooCommerce stores. This involves carefully tuning cache zones, key generation, and cache purging strategies to minimize database load and accelerate page delivery. We’ll focus on Ubuntu 24.04 LTS, assuming a standard LEMP stack with PHP-FPM. Defining Cache Zones and Parameters The […]
Prerequisites and System Setup This guide assumes a functional openSUSE Leap 15.5 installation with root or sudo privileges. We will be setting up HAProxy to distribute traffic across multiple Nginx instances serving Magento 2. Ensure your Nginx servers are already configured and accessible on a specific port (e.g., 8080) for the backend Magento 2 applications. […]
Identifying the Memory Leak: Initial Observations and Tools When encountering persistent memory growth in MariaDB instances running on openSUSE Leap 15.5, particularly after recent upgrades or configuration changes, a systematic diagnostic approach is paramount. The first step involves confirming the leak and gathering baseline metrics. Tools like top, htop, and ps are invaluable for real-time […]
Assessing the Perl Upgrade Landscape on openSUSE Leap 15.5 Enterprise environments often rely on specific Perl versions for critical applications. Upgrading Perl on a stable distribution like openSUSE Leap 15.5, particularly from 5.34 to 5.38, necessitates a meticulous approach, especially when dealing with custom-compiled CPAN modules that link against system libraries or have C/C++ extensions […]
Understanding `dirty_ratio` and `dirty_background_ratio` On Linux systems, the virtual memory subsystem manages how data is written from RAM to persistent storage. A critical aspect of this management involves the concept of “dirty” pages. A page is considered dirty when it has been modified in memory but has not yet been written back to its underlying […]