Data Storage Rules

Configuration Item	Default	Description
Project data-bucket retention period	1 year	New projects default to one year. Historical projects are automatically upgraded from the previous 14-day default.
Data-point storage limit	100 points per operation	The API returns a 400 error when the limit is exceeded.
Data-point storage switch	User-configurable	Configured through the /data/setStore API.
Cloud SCADA trial period	30 days	Calculated from gateway creation and cannot be renewed.
Cloud SCADA behavior after expiration	WebSocket push and storage stop	Existing data is not deleted.

Data-Bucket Management

What Is a Data Bucket?

A data bucket is a logical storage unit in InfluxDB. The platform creates data buckets by project to isolate time-series data belonging to different projects.

Retention Policy

• New projects: a data bucket with a default one-year retention period is created.
• Historical projects: the system automatically detects and upgrades the storage period for older projects from the previous default of 14 days to one year.
• After expiration: new data is no longer written. Existing data is retained but cannot be queried.

Data-Point Storage Control

Users can precisely control whether historical data is stored for each data point:

1. Open Gateway Details > Data-Point Management.
2. Select the data points whose history should be stored, up to 100 points per operation.
3. Call the /data/setStore API to save the configuration.
4. Data from selected points is written to InfluxDB. Unselected points continue to support real-time push only.

Storage Architecture

Edge Gateway ──MQTT──▶ data Module ──Write──▶ InfluxDB Bucket
                                             │
                              ┌──────────────┴──────────────┐
                              ▼                             ▼
                         Real-Time Query API          Historical Query API
                           (Redis Cache)                (InfluxDB Query)