WebSockets provide full-duplex communication channels over a single TCP connection, enabling real-time features such as live chat, push notifications, collaborative editing, gaming, and live dashboards. Unlike standard HTTP, which is request-response, WebSocket connections are persistent and bidirectional — the server can push data to clients at any time without a client request. Nginx can act […]
🟡 Medium ⏱ 5–30 min Last verified: 10 November 2025 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related […]
Even when free trusted certificates from Let’s Encrypt are available for public domains, self-signed certificates serve important roles: development environments, internal network services, IoT devices, automated testing pipelines, and machine-to-machine communication within a private network. Unlike Let’s Encrypt certificates, self-signed certificates require no domain ownership verification or outbound internet access — they can be generated […]
A LAMP stack — Linux, Apache HTTP Server, MySQL (or MariaDB), and PHP — is the original and most widely deployed open-source web hosting stack. It has powered millions of websites since the early 2000s and remains the default for hosting control panels (cPanel, Plesk, DirectAdmin) and many shared hosting environments. Apache’s .htaccess support, mod_rewrite, […]
A LEMP stack — Linux, Nginx, MySQL (or MariaDB), and PHP — is the standard modern web server stack for hosting PHP applications such as WordPress, Laravel, Drupal, and Magento. Compared to the traditional LAMP stack, Nginx handles concurrent requests more efficiently under high load due to its event-driven non-blocking architecture, making it the preferred […]
OpenLiteSpeed (OLS) is the open-source version of LiteSpeed Web Server — one of the highest-performance HTTP servers available, purpose-built for serving PHP applications. OpenLiteSpeed uses an event-driven architecture similar to Nginx but includes a built-in PHP engine (LSAPI) that processes PHP requests 3–5x faster than PHP-FPM behind Nginx, eliminating the socket overhead of the FastCGI […]
HAProxy (High Availability Proxy) is a battle-hardened open-source load balancer and proxy for TCP and HTTP workloads. Where Nginx load balancing is sufficient for simple round-robin HTTP distribution, HAProxy provides a richer feature set: advanced health checks with multiple failure thresholds, ACL-based routing, Layer 4 TCP load balancing for non-HTTP protocols (MySQL, Redis, SMTP), detailed […]
Introduction This tutorial covers How to Set Up Nginx Load Balancing on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: […]
Varnish Cache is a high-performance HTTP reverse proxy designed specifically for caching. Unlike Nginx FastCGI cache which caches PHP output files on disk, Varnish stores cached objects entirely in RAM and can serve tens of thousands of requests per second from memory. Varnish operates in front of your web server: it listens on port 80 […]
Introduction This tutorial covers How to Install Apache on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Install Apache zypper install -y apache2 Step 2 — Enable […]
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