Having 12+ Years of Experience in Software Development
Understanding Swap Space and its Role Swap space is a crucial component of memory management on Linux systems. When physical RAM (Random Access Memory) becomes exhausted, the kernel can move less frequently used memory pages from RAM to a dedicated disk partition or file, known as swap space. This process, called swapping or paging out, […]
Understanding NVMe Write Caching on Linux Modern NVMe SSDs offer significant performance advantages, but by default, Linux kernel parameters might not fully leverage their write caching capabilities, especially in high-I/O workloads like database operations. This can lead to suboptimal write throughput and increased latency. The primary mechanism we’ll focus on is the `writeback` mode for […]
Prerequisites and System Preparation This guide assumes you have a clean Ubuntu 24.04 LTS (Noble Numbat) server with root or sudo privileges. Before proceeding, ensure your system is up-to-date to avoid potential dependency conflicts. Execute the following commands to update your package lists and upgrade existing packages: sudo apt update && sudo apt upgrade -y […]
Prerequisites and Initial Setup This guide assumes you have two distinct openSUSE Leap 15.5 servers: one dedicated to running Dockerized Discourse and its dependencies (let’s call it discourse-host), and another acting as an isolated Nginx reverse proxy (proxy-host). Both servers should have static IP addresses and be accessible within your internal network. Ensure that discourse-host […]
Understanding PostgreSQL Lock Contention During Discourse Upgrades Major version upgrades of PostgreSQL, especially when performed on a production Discourse instance, can introduce complex challenges. One of the most common and disruptive issues is database lock contention, which can halt the upgrade process or, worse, lead to data corruption. This often manifests during the `pg_upgrade` utility […]
Nginx Reverse Proxy Tuning for Discourse on Rocky Linux 9 This document details advanced Nginx configuration strategies for optimizing caching, buffering, and timeouts when acting as a reverse proxy for a Discourse instance on Rocky Linux 9. These settings are critical for ensuring high availability, responsiveness, and efficient resource utilization under heavy load. Understanding Nginx […]
Transitioning from Daphne to Uvicorn with uvloop on Debian 12 This guide details the process of migrating a Django ASGI application deployment on Debian 12 (Bookworm) from the Daphne ASGI server to the more performant Uvicorn server, leveraging the uvloop event loop for enhanced throughput. This transition is crucial for enterprise environments demanding high concurrency […]
System Preparation and Initial Setup This guide focuses on deploying and optimizing FastAPI applications using Uvicorn and Gunicorn on Ubuntu 24.04 LTS. We’ll cover the installation, configuration, and advanced tuning required for high-traffic scenarios. Ensure your system is up-to-date before proceeding. Begin by updating your package lists and upgrading existing packages: sudo apt update && […]
Prerequisites and Base System Setup This guide assumes a fresh installation of openSUSE Leap or Tumbleweed. We’ll be leveraging Docker for containerization, which is the most efficient way to manage isolated, lightweight environments. Ensure Docker is installed and running on your host system. On openSUSE, installation is straightforward: Install Docker: sudo zypper install docker docker-compose […]
Understanding CodeIgniter 4 CSRF and Proxy Headers CodeIgniter 4’s built-in Cross-Site Request Forgery (CSRF) protection is a critical security feature. It works by generating a unique token for each user session and embedding it in forms. When a form is submitted, the application verifies that the submitted token matches the one stored in the session. […]