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DRY, KISS, YAGNI — explain with examples.

FresherFundamentalsSoftware Engineering & Tools
Model answer

DRY, KISS, YAGNI

For DRY, KISS, YAGNI — explain with examples., interviewers listen for a crisp definition, how the pieces interact in a real system, and one trade-off or failure mode you have seen or would guard against.

  • DRY: one source of truth—don't copy-paste validation.
  • KISS: simplest design that works.
  • YAGNI: don't build features "just in case".
DRY ≠ premature abstraction—two similar lines OK until pattern clear.