# Topic & Stream Conventions
Format: utp.<env>.<realm>.<event_type>.<partition>
Examples:
- `utp.prod.chamber_us.quotes.tick.ES`
- `utp.prod.chamber_us.gex.levels.SPX`
- `utp.prod.brain-007.signals.zgzd.NQ`
DLQ naming:
- `<topic>.dlq` (same partitioning)
Retention:
- quotes/trades: 24–72h on bus (persist to Timescale indefinitely)
- signals/control: 7–30d
Idempotency key (recommended):
- hash(event_type, source_id, partition, event_time|sequence, checksum)