1st round How will you debug slow sql query Compare sql and no sql What are microservices Explain project Your roles and responsibilities Group by sql query Event loop explanation

Round 1: Cv ShortListed Round 2: Techincal interview, Interview started with self-introduction after that they directly jump on questions, basic oops concept(polymorphisms, encapsulation, abstract class), how we can create objects if we create an object of the subclass can we call a constructor of the superclass. What is EmitterLoop in nodejs,callback function,events. if in the array all value is null they what will be print on the screen. Difference between while and do-while loop. Puzzle question: How minimum cuts are required to cut a cake in 8 equal parts. Round 3: They asked questions from java and data structure(Basic) because I do competitive programming. In java what will call first. collections in java. black tree. Round 4: Hr They asked about me and my family. Tell me one difficulty which you faced till now.