backendserviceexternalqueuedatabase

Notification System

Multi-channel notification platform with preferences, templating, and delivery tracking.

9 components8 connections5 types

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Components

backend

Event Trigger

Receives notification requests from internal services via API or events.

service

Channel Router

Routes notifications to correct channels based on user preferences and priority.

service

Template Engine

Renders notification content from templates with user-specific data.

external

Email Service

SendGrid/SES integration for transactional and marketing emails.

external

Push Service

FCM/APNs for mobile push notifications with badge counts.

external

SMS Gateway

Twilio integration for OTP, alerts, and critical notifications.

queue

Message Queue

Rate-limited delivery queue with retry logic and dead letter handling.

database

Preferences DB

User notification preferences, channel opt-ins, quiet hours, frequency caps.

database

Delivery Log

Notification history, delivery status, open/click tracking.

Data Flow

Event TriggerChannel RouterNotifyhigh

Channel RouterPreferences DBCheck prefshigh

Channel RouterTemplate EngineRenderhigh

Template EngineMessage QueueEnqueuehigh

Message QueueEmail ServiceSend emailmedium

Message QueuePush ServiceSend pushmedium

Message QueueSMS GatewaySend SMSlow

Message QueueDelivery LogLog deliveryhigh

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