SPRING BOOT 3 AND JAVA 21: ADVANCING MODERN APPLICATION DEVELOPMENT FOR FINANCIAL SERVICES

Abstract

This paper looks at how Spring Boot 3 and Java 21 changes the performance, security features and resources in financial services applications. A major focus is placed on how these technologies solve important problems like the high volume of transactions, security risks, and integration with modern cloud infrastructure that financial systems face. The most important results suggest that data protection and compliance regulative measures Virtual Threads in Java 21 substantially enhances the ability to concurrently process transactions. At the same time, Spring Boot 3 increases the state of security features with regards to regulatory compliance. The research also notes that Spring Cloud's integration with other components of the system improves cloud integration and the Observation API increases observability of the application. Furthermore, AOT Compilation and GraalVM Native Images optimize resources, increase speed of the application’s start-up and reduce memory usage. Collectively, these technology advances allow financial institutions to develop secure, scalable, and highly efficient applications optimally required by the financial services industry.