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+-------------------+ +-------------------+ +-------------------+ | Front‑End SDK | HTTPS | API Gateway | gRPC | Recommendation | | (JS / iOS / Android) | ----> | (Kong / AWS API) | ------> | Service (Rust) | +-------------------+ +-------------------+ +-------------------+ | ^ | (Tag events) | | (Model config) | +-------------------+ | | | | Event Ingestor |<------------+ +---------------------> | | (Kafka) | | Scoring Engine (Python) | +-------------------+ +--------------------------+ | +-------------------+ | User‑Profile Store| | (Redis + ClickHouse)| +-------------------+

: Training for technicians qualified to de-energize HV systems and perform work on "non-live" components. ure093

Formerly known as BGI 8686, this guideline provides a framework for employers to ensure safe working conditions when employees face potential electrical hazards such as electric shocks or arcing. Why It Matters | Field | Type |

: Establishing designated work areas that prevent unauthorized access to live systems. Why It Matters ure093

| Field | Type | Description | |-------|------|-------------| | eventId | UUID | Unique id | | tenantId | string | Tenant namespace | | userIdHash | string (SHA‑256) | Hashed user identifier | | itemId | string | Id of content item | | tag | string | Tag value (lower‑cased, trimmed) | | action | enum( add , remove ) | Tag operation | | timestamp | epoch ms | Event time |