1. Brief about yourself. 2. What is collection library in python 3. Can a list be key of dictionary in python 4. What is difference between load balancer and api gateway 5. What is primary and secondary index 6. What are types of nosql dbs 7. Mongodb is what type of nosql 8. How services communicate in microservices 9. What is aggregate framework in mongodb 10. Which is better to keep same mongodb for all microservices or separate mongodb. If separate then how to maintain transactions 11. What is lifecycle of serverless lambda function