Elif Demir
Cloud Solutions Architect
Specializing in enterprise cloud migration projects and hybrid infrastructure design with 8 years of experience in AWS, Azure, and private cloud environments.
16
articles
Elif Demir — articles
MySQL vs PostgreSQL vs MongoDB - 2026 Database Comparison
Database selection directly impacts your project's performance, scalability, and maintenance costs. MySQL's ubiquity, PostgreSQL's advanced features, and MongoDB's flexible schema each provide advantages in different scenarios. The wrong choice creates technical debt that requires costly migration i
Database Backup Automation - pg_dump, mysqldump & Object Storage
Every system without database backups is a potential disaster waiting to happen. A disk failure, an accidental DROP TABLE command, or a ransomware attack can wipe out years of data in minutes. Manual backups get forgotten, skipped, or end up inconsistent. This guide covers creating automated backup
Kubernetes HPA: Auto-Scaling Pods Under Load
Manually adjusting replica counts during traffic spikes is both slow and error-prone. Kubernetes Horizontal Pod Autoscaler (HPA) automatically scales Pod count up or down based on CPU usage, memory consumption, or custom metrics. This guide covers HPA configuration from scratch, Metrics Server setup
Building a CI/CD Pipeline with GitHub Actions: Node.js Example
Manual testing and deployment processes are both slow and error-prone. GitHub Actions is a free CI/CD platform that automatically runs test, build, and deploy steps when code is pushed. This guide builds a complete pipeline for a Node.js application including testing, Docker image building, security
Blue-Green and Canary Deployment Strategies: Zero Downtime Updates
Users experiencing downtime during application updates is unacceptable. Blue-Green deployment switches instantly between two environments, while Canary deployment minimizes risk by routing a small percentage of traffic to the new version. This guide compares both strategies with Kubernetes and Nginx
Centralized Log Management with ELK Stack
Checking logs from multiple servers and applications one by one via SSH is inefficient and error-prone. With ELK Stack (Elasticsearch, Logstash, Kibana), you can collect, search, and visualize all your logs in a centralized location. This guide covers ELK architecture, Docker Compose setup, Logstash
WooCommerce Performance Optimization: 12 Techniques to Improve Core Web Vitals
WooCommerce is the most popular e-commerce platform running on WordPress, but plugin bloat, unoptimized images, and database overhead can easily push page load times beyond 4-6 seconds. Since Google's Core Web Vitals are a direct ranking factor, a slow store means both lost customers and declining o
SSL/TLS Certificate Types: DV, OV, EV and Wildcard Differences
SSL/TLS certificates encrypt communication between your website and visitors while verifying your site's identity. But not all certificates are equal: DV (Domain Validation) only confirms domain ownership, while EV (Extended Validation) performs comprehensive organization verification. This guide co
OWASP Top 10 2025: Most Common Security Vulnerabilities in Web Applications
OWASP (Open Web Application Security Project) Top 10 is a globally referenced standard that ranks the most critical security risks in web applications. This list defines the vulnerabilities that developers and security teams should prioritize. In this guide, we cover each risk with real-world exampl
Server and Backup Strategies Against Ransomware Attacks
Ransomware attacks cause over $20 billion in global damage annually in 2025. Attackers encrypt your files and demand ransom for the decryption key. If you have no backups or your backups are also encrypted, your options are extremely limited. This guide covers prevention, detection, and recovery str
WordPress Staging Environment Setup and Safe Transition to Live
Making direct theme updates, plugin installations, or PHP version changes on your live WordPress site is risky - a single error can crash the entire site. A staging environment creates an exact copy of your live site, allowing you to safely test changes before deploying. In this guide, we cover sett
VPS Network Performance: Bandwidth and Latency Optimization
Boost network performance on your VPS server: TCP BBR, kernel tuning, DNS optimization, and bandwidth monitoring. Latency reduction techniques guide.
IPMI and iDRAC Physical Server Monitoring Guide
Remotely manage your physical server with IPMI and iDRAC: hardware monitoring, remote console, power control, and out-of-band management guide.
What Is a GPU Server? AI and Render Workloads Guide
What is a GPU server and which workloads is it used for? GPU selection and configuration guide for machine learning, LLM training, 3D rendering, and video processing.
cPanel Alternatives: Best Free and Paid Panel Comparison
Is web site management possible without cPanel? We compare DirectAdmin, CyberPanel, CloudPanel, HestiaCP, and other alternatives in terms of features, price, and performance.
Cloud Server Resource Monitoring and Optimization Guide
Monitor CPU, RAM, disk, and network usage on your cloud server with monitoring tools and optimization techniques. Detect performance issues with htop, vmstat, and iostat.