# Story 8.3: Additional Sample Feature Services

## Metadata
- **Story ID**: 8.3
- **Title**: Additional Sample Feature Services
- **Epic**: 8 - Advanced Features & Polish
- **Status**: Pending
- **Priority**: Low
- **Estimated Time**: 12-15 hours
- **Dependencies**: 4.1

## Goal
Create additional sample feature services to demonstrate different use cases and patterns. Each service is independently deployable with its own entry point, gRPC server, and database schema.

## Description
This story creates additional sample feature services (Notification Service, Analytics Service) to show different service patterns and use cases. Each service follows the same pattern as Blog Service: independent entry point, gRPC server, database schema, and Consul registration.

## Deliverables

### 1. Notification Service
- Service entry point: `cmd/notification-service/main.go`
- Service structure: `services/notification/`
- gRPC service definition: `api/proto/notification.proto`
- Features:
  - Email templates
  - Notification preferences
  - Notification history
  - gRPC API for sending notifications
- Database schema: `notification` schema
- Service registration with Consul

### 2. Analytics Service
- Service entry point: `cmd/analytics-service/main.go`
- Service structure: `services/analytics/`
- gRPC service definition: `api/proto/analytics.proto`
- Features:
  - Event tracking
  - Analytics dashboard API
  - Export functionality
- Database schema: `analytics` schema
- Service registration with Consul
- Uses Event Bus for event ingestion

## Acceptance Criteria
- [x] Notification Service is independently deployable
- [x] Analytics Service is independently deployable
- [x] Each service has its own entry point and gRPC server
- [x] Services register with Consul
- [x] Services demonstrate different patterns (event-driven, etc.)
- [x] Services are well-documented

## Related ADRs
- [ADR-0029: Microservices Architecture](../../adr/0029-microservices-architecture.md)
- [ADR-0030: Service Communication Strategy](../../adr/0030-service-communication-strategy.md)
- [ADR-0033: Service Discovery Implementation](../../adr/0033-service-discovery-implementation.md)

## Files to Create/Modify
- `cmd/notification-service/main.go` - Notification Service entry point
- `services/notification/` - Notification Service implementation
- `cmd/analytics-service/main.go` - Analytics Service entry point
- `services/analytics/` - Analytics Service implementation