Question library
Questions from real interviews. Drill any of them by voice in a couple of minutes, with an interviewer, a score and feedback.
Once a day you need to import a CSV with several million rows into the database through an existing JPA layer. How would you design the import so it doesn't run out of memory and finishes in time?Mid-levelOnce a day you need to process tens of millions of rows from the database and recompute data based on them, in Java with Spring and JPA. How would you design that processing?Senior