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What experience do you have with server-side languages?
I have experience with several server-side languages, including Java, Python, and Node.js. I've worked on projects using these languages extensively, focusing on building robust APIs and handling server requests efficiently.
How do you ensure scalability and performance in your back-end applications?
I ensure scalability and performance by designing my applications with a microservices architecture, optimizing database queries, implementing caching strategies, and using load balancers and distributed systems when necessary.
What databases are you familiar with?
I am familiar with both relational databases like MySQL and PostgreSQL, and NoSQL databases such as MongoDB and Cassandra. I choose the database based on the project's specific needs.
How do you handle error management and logging in a back-end application?
I use structured error handling with try-catch blocks and integrate logging libraries or tools like Log4j, Winston, or ELK stack to collect and monitor log data for error analysis and diagnostics.
Can you explain your experience with RESTful API design?
I have designed and implemented many RESTful APIs. I focus on ensuring they adhere to REST principles, use appropriate HTTP methods, and return clear, actionable error messages. Security and documentation are also key aspects of my design process.
Describe how you would set up authentication and authorization in a back-end system?
I typically use JWT (JSON Web Tokens) for stateless authentication or OAuth 2.0 for more complex systems. For authorization, I implement role-based access control (RBAC) to restrict or grant access to various parts of the application.
What role does version control play in your development process?
Version control is essential in my development process, ensuring reliable code management and collaboration. I primarily use Git, enabling me to track changes, manage branches, and collaborate with other developers efficiently.
How do you handle data validation and sanitation for back-end processes?
I validate and sanitize data both on the client side and server side using validation libraries or custom validation scripts to prevent security vulnerabilities like SQL injection or cross-site scripting (XSS).
What tools and practices do you use for continuous integration and deployment?
I use tools like Jenkins, Travis CI, or GitHub Actions for continuous integration and deployment (CI/CD). These tools help automate testing, integration, and deployment processes, enhancing productivity and code reliability.
How do you stay updated with new developments in back-end technologies?
I stay updated by following tech blogs, attending webinars and conferences, participating in online communities, and contributing to open source projects. This helps me keep my skills current and learn about upcoming trends and best practices.
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