| definition | latency | description |
|---|---|---|
| Online System | < 100ms | Web content, interactive featurses (e.g chat) transaction processing (OLTP) |
| Nearline Systems | < 1 secs/mins | Dynamic content (freshness matters), recommendation systems, dashboards/monitoring |
| Batch Processing System | > 1 hours | Offline processing, analytics (OLAP) |