43After going active-active across two regions, orders disagree between them. What broke, and how is this done properly?▼hardNewPhonePeUberLinkedIn◆ premiumActive-active replication moves writes but not truth. Last-writer-wins quietly discards one of the two orders your finance team expects both to exist.Open full answer →
25Search results lag the database by minutes and it costs money. Design the sync, and plan for the day you must rebuild the whole index.▼hardNewLinkedInFlipkartWalmart Global Tech◆ premiumDual-writing from application code is the answer that fails quietly six months in. Change data capture, per-entity ordering, and a reindex you could run on a Tuesday are what interviewers score.Open full answer →
