Horizontal Scaling with Session Preservation of PHP Applications with MVC Architecture

Abstract

This paper explores horizontal scaling of PHP MVC applications with session preservation for enhanced availability and resource efficiency. It covers theoretical aspects of MVC architecture, PHP in web development, session handling, and horizontal scaling methods, including load balancers, Docker, and Kubernetes. The practical methodology details environment setup, application development, session management, Dockerization, Kubernetes integration, and horizontal scaling configuration. Performance testing reveals significant improvements, showing a response time decrease from an unresponsive state at 1000 RPS (5111 ms) to 32 ms at 2500 RPS with horizontal scaling. The study contributes insights and practical guidance for highly available and scalable web applications.