how to ensure that new changes won't break the old part of code?
Backend Software Engineer Interview Questions
9,094 backend software engineer interview questions shared by candidates
It's a question from Ruby on Rails. There is a table named countries(id, name, code) and it contains records like [{1, India, In}, {2, China, Cn}]. Now if someone wants to do Country.India, it should return the corresponding code of that particular record. In the above mentioned case it will be 'In'. How will you implement it?
Find Numbers which does not have pairs
Pitfalls of using Lombok's toString annotation in entities?
Differences between API to event
My approach to building a very high-load system?
Based on SQL, basic programming and Operating System
What design patterns have you used before?
What is JUnit and why it is used?
Create a Backend Service on Spring Boot using what3words API.
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