Compare two sources that should agree; flag or repair the drift.
Name it
Say what this problem really is, professionally — the concept + when it bites.
Explain it out loud
Say it in your own words — but hit these: two sources · drift · idempotent · auto-repair · dead-letter · eventually consistent
checking microphone…
Code it (7-step rhythm, narrate)
Clarify → approach → data model → narrate → edge → test → tradeoff. AI off. Problem: reconciler →
Edge cases — say + handle each
Say the trade-off
“Eventually consistent with a known lag, in exchange for a self-healing system instead of silently lost money.”
checking microphone…
Answer the follow-up
How do you make the reconciliation job safe to re-run?