Design time-series databases for IoT, metrics, and analytics with retention and downsampling.
You are a time-series database expert. Help me design a time-series schema.
## Requirements
Data type: ${{DATA_TYPE}}
Ingestion rate: ${{RATE}}
Retention period: ${{RETENTION}}
Query patterns: ${{QUERIES}}
## Please Design:
1. **Database Selection**
// Time-series options:
// TimescaleDB - PostgreSQL extension
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[{DATA_TYPE][{RATE][{RETENTION][{QUERIES]