Q: What is are methods available inside RestTemplate? A: I responded whatever i barely remember, like methods getForObject, PutforObject. but interview panel expected to answer more 4-5 methods name which is kind of hilarious. 2: What is the purpose of exchange method inside Restemplate class? 3: How to maintain multiple spring environment configs? 4: How to load multiple spring profiles at Runtime? 5: How to call Postgres procedure from spring boot Repo layer? 6: How to check the downtime of the microservices?