Pergunta de entrevista da empresa Simple Energy
1. What is your experience working with databases and how have you optimized queries for better performance? 2. Can you explain the difference between synchronous and asynchronous processing and give an example of when you might use each? 3. How do you approach debugging complex issues in a production environment, and what tools do you typically use for troubleshooting?
Resposta da entrevista
Sigiloso
1. In my database work, I've optimized queries by analyzing execution plans, optimizing indexing, and rewriting queries. Caching and leveraging database caching mechanisms also help. 2. Synchronous processing executes tasks sequentially, while asynchronous processing allows tasks to run independently. For example, banking transactions typically use synchronous processing, while asynchronous processing suits tasks like file uploads in web applications. 3. When debugging in production, I gather information, isolate the issue through hypothesis testing and code inspection, and use tools like logging frameworks, monitoring systems, and debugging tools such as gdb or VisualVM. Collaboration and version control are essential, too.