iac/docs/apps/subscriptions.md

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# subscriptions
Подписки и доставка уведомлений. Namespace: `subscriptions`.
```mermaid
flowchart LR
PG[(PostgreSQL)]:::data
Redis[(Redis)]:::data
Kafka[[Kafka]]:::msg
MsgHub[message-hub]:::peer
subgraph NS["ns: subscriptions"]
Backend[deployment: backend<br/>Service]:::comp
end
MsgHub -->|deliver| Backend
Kafka -->|consume notify.*| Backend
Backend <-->|pub/sub| Redis
Backend --> PG
classDef comp fill:#ec4899,stroke:#9d174d,stroke-width:2px,color:#fff
classDef peer fill:#fce7f3,stroke:#9d174d,color:#000
classDef data fill:#10b981,stroke:#065f46,color:#fff
classDef msg fill:#ef4444,stroke:#991b1b,color:#fff
style NS fill:#fdf2f8,stroke:#ec4899,stroke-width:2px
```