Can Kaya
Security Specialist
CISSP-certified security expert creating content on cybersecurity, DDoS protection, and server hardening.
15
articles
Can Kaya — articles
PostgreSQL Performance Optimization - Index Strategies & Query Tuning
PostgreSQL ships with conservative, general-purpose defaults. Achieving high performance in production requires tuning memory settings, index strategies, query optimization, and maintenance tasks to match your workload. This guide walks through concrete steps from detecting slow queries with EXPLAIN
Read Replicas for Database Load Distribution - Master-Slave Replication
When a single database server handles both reads and writes, response times increase and CPU/IO saturate as traffic grows. Read replicas distribute the database load by keeping write operations on the primary (master) while routing read queries to one or more replica servers. Since most web applicat
What Is a Helm Chart? Standardizing Kubernetes Deployment
Kubernetes applications can consist of dozens of YAML files: Deployment, Service, ConfigMap, Secret, Ingress, and more. Managing these files separately for each environment (dev, staging, prod) is error-prone. Helm is a package manager for Kubernetes that bundles these YAML files into parameterized
Managing Cloud Infrastructure as Code with Terraform
Creating servers and network resources by clicking through a web panel carries serious risks for repeatability and auditability. Terraform is an open-source IaC tool that lets you define your infrastructure as code. This guide covers HCL syntax, state management, module structure, and production bes
CI/CD in Monorepo Structure: Turborepo and GitHub Actions Integration
Managing multiple applications and packages in a single repository can turn into chaos without the right tools. Turborepo dramatically speeds up CI/CD processes in monorepo projects with its smart caching and task pipeline mechanism. This guide walks you through Turborepo setup, GitHub Actions integ
Distributed Tracing with OpenTelemetry - Microservice Troubleshooting
In a microservice architecture, a single user request passes through multiple services, and latency or failure at any point affects the entire chain. Finding which service creates the bottleneck through traditional log analysis can take hours. With OpenTelemetry distributed tracing, you can track ea
Headless WordPress: How to Set Up a Decoupled Architecture with Next.js
Traditional WordPress handles both content management and frontend rendering in a single monolith. In a headless architecture, WordPress serves only as a backend CMS while a modern framework like Next.js takes over the frontend. The result: faster page loads, better developer experience, and unlimit
What Is a DDoS Attack and How Does It Work? Layered Protection Strategy
DDoS (Distributed Denial of Service) attacks aim to overwhelm a server or network with excessive traffic, rendering it unable to serve legitimate users. In 2025, the average DDoS attack volume exceeded 1.5 Tbps, and 65% of attacks lasted less than 10 minutes - making detection and response speed cri
Isolating Your Cloud Infrastructure with VPC: Virtual Private Cloud Guide
VPC (Virtual Private Cloud) lets you create an isolated network segment in the cloud that belongs exclusively to you. Even on shared infrastructure, your traffic is completely separated from other customers. A properly configured VPC blocks unauthorized access, controls network traffic, and helps yo
Database Security: Access Control and Encryption for MySQL and PostgreSQL
Databases hold your application's most valuable asset - data. A database breach can lead to customer data leaks, financial loss, and reputation damage. Default installations of MySQL and PostgreSQL do not provide adequate security for production environments. This guide covers all layers of database
Container Security: Scanning and Securing Docker Images
Containers simplify application deployment but misconfigured containers create serious security risks. According to Snyk's 2024 report, 75% of popular images on Docker Hub contain known vulnerabilities. This guide covers Docker image scanning, minimal base image usage, rootless containers, and runti
Bare Metal vs Cloud Server: 2026 Comparison
Differences between bare metal and cloud servers: performance, cost, scalability, and use cases. Which one for which workload in 2026?
Proxmox VE Bare Metal Virtualization Setup Guide
Proxmox VE setup on bare metal server: creating KVM virtual machines and LXC containers, network configuration, and backup steps.
LiteSpeed vs Nginx vs Apache: Which Is Faster? 2026 Comparison
We compare LiteSpeed, Nginx, and Apache web servers in terms of architecture, performance, security, and cost. Which one should you choose for which scenario, backed by benchmark data?
Linux VPS SSH Hardening: Port, Keys, Fail2Ban
Harden SSH security on your Linux VPS: port changing, key-based authentication, Fail2Ban setup, and sshd_config settings. Step-by-step security guide.