Prompt

Implement real-time analytics system.

<data_streams>
{streaming data sources}
</data_streams>

<analytics_needs>
{real-time metrics and dashboards}
</analytics_needs>

<latency_requirements>
{acceptable delay for insights}
</latency_requirements>

Implement:
1. Stream processing choice
2. Window strategies
3. State management
4. Output sinks
5. Alerting rules
6. Backpressure handling