> ## Documentation Index
> Fetch the complete documentation index at: https://docs.flowwarden.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Event-Driven Notifications

> Trigger notifications on database changes in real time

<Note>This page is a placeholder. Full content coming soon.</Note>

## Overview

Use FlowWarden to send **emails, push notifications, or webhooks** whenever specific documents are inserted or updated in MongoDB.

```mermaid theme={null}
flowchart LR
    A[(MongoDB)] -->|Change Stream| B[FlowWarden]
    B -->|@OnInsert| C[Send welcome email]
    B -->|@OnUpdate| D[Push notification]
    B -->|@OnChange| E[Fire webhook]
```

## Why FlowWarden

* **`@OnInsert` / `@OnUpdate`** handlers target exactly the events you care about
* **Retry with exponential backoff** handles transient email/API failures
* **DLQ** ensures no notification is silently dropped