Paper Title
Comparison of Performance And Efficiency of Backend Frameworks: Spring Boot and Express.JS

Abstract
Backend frameworks are the core of modern web development and can be considered as structured tools with scalable, maintainable, and efficient applications. This paper offers an extensive comparative study of two of the most widely adopted backend frameworks: Spring Boot and Express.js. Of course, Spring Boot is famous for its robustness and large ecosystem built atop the Java platform and so widely used in enterprise-level applications. Express.js is a lightweight framework for Node.js, and light architecture and its flexibility that the framework is preferred for quick development of applications. This paper discusses performance and efficiency across several key metrics-including request-handling capacity, response time, memory usage, and CPU utilization-by the two frameworks using sets of benchmarking tests combined with qualitative analysis. The results show that though Spring Boot scales better and reliably for larger applications, Express.js is more effective regarding lower latency and resource usage in smaller applications. The analysis conducted above will help a developer choose the best possible framework according to the needs of an application and the requirements of the project in which it will be implemented. Keywords - Spring Boot, Express.js, Backend Frameworks, Performance, Efficiency, Scalability