Backend Frameworks and Ecosystem Questions

Covers fundamentals of backend technology stacks and the surrounding ecosystem. Topics include common server side frameworks and stacks such as Node js with Express, Python with Django or Flask, and Java with Spring, and key concepts such as routing, middleware, request handling, project and folder structure, dependency management, object relational mapping usage, application configuration, error handling, testing and debugging strategies, security basics, deployment considerations, and how frameworks fit into overall system architecture and service boundaries.