This article analyzes the performance of CRUD operations in two popular frameworks: Spring Boot and ASP.NET Core, evaluating speed, efficiency, and resource usage. Performance tests revealed that ASP.NET Core excels in CPU-intensive tasks, making it more suitable for applications requiring high computational efficiency. In contrast, Spring Boot offers more stable memory usage and better handling of complex queries, making it ideal for resource-constrained systems. The findings indicate that the choice of technology should depend on project requirements, and the paper provides practical guidance for optimizing the development of scalable applications.