Book 5 · Lesson 5.10

Log replay and reprocess history

  • Explain consumer group offset reset
  • Relate ON CONFLICT to safe replay
  • Use KafkaOffsetRewind conceptually

Prerequisites: 5.9 · 2.7

log end offset: 10 · consumer at: 10 · lag: 0

Reprocessing enriched topic re-runs LLM/heuristics — idempotent Postgres writes prevent duplicate PK errors.

Teach-back prompt

Dev vs prod offset reset — what changes?

Offset replay dev

Lesson 5.10 check

1. Safe replay needs…