Happiest Minds Technologies Technical Lead - Java interview questions

They conducted the scheduled interview, candidates should attend the office premises to take virtual interview from there, it's a scheduled face to face They asked me few questions in java , spring boot ,jpa, microservices and one medium dsa question 1. I was able to answer all questions in every aspect only few questions not able to provide answer and got bit confused between qualifer annotation usage and circular dependency And I have solved dsa question in most efficient way, but the interviewer itself not aware of complexity in time and space , he said he has shorter approach without knowing whats the time and space complexity of them But it was quite good experience, sometimes interviewer thinks we don't know anything,if we are swinging our heads for all of their answers