# Phoenix Observability Stack

**Category**: PLATFORM_SERVICES  
**Publisher**: Phoenix Cloud Services  
**Status**: PUBLISHED  
**Version**: 1.0.0

## Overview

Phoenix Observability Stack provides comprehensive observability with distributed tracing, structured logs with correlation IDs, and SLO monitoring. Features OpenTelemetry integration, distributed tracing across services, and SLOs for ledger posting, message delivery, and transaction settlement.

## Key Features

- **Distributed tracing**: End-to-end request tracking
- **OpenTelemetry integration**: Standard observability protocol
- **Structured logging**: JSON logs with correlation IDs
- **SLO monitoring**: Service level objective tracking
- **Metrics collection**: Prometheus-compatible metrics
- **Alerting**: Configurable alerting rules
- **Correlation IDs**: Request correlation across services

## API Endpoints

### Get Traces

```http
GET /observability/traces?correlationId=req_123&serviceName=ledger-service
```

### Get Metrics

```http
GET /observability/metrics?serviceName=ledger-service&metricName=request_rate&timeRange=1h
```

### Get Logs

```http
GET /observability/logs?correlationId=req_123&level=ERROR&limit=100
```

### Get SLO Status

```http
GET /observability/slos?serviceName=ledger-service&metricName=uptime
```

## Pricing

- **Model**: Usage-based
- **Per Metric**: $0.0001
- **Per Log**: $0.00005
- **Per Trace**: $0.001
- **Free Tier**: 1,000,000 metrics/logs/month, 7-day retention

## Compliance

- SOC 2 Type II

## SLA

- **Uptime**: 99.9%
- **Latency**: <100ms p95

## Architecture

- OpenTelemetry collectors
- Distributed tracing backend
- Log aggregation pipeline
- SLO calculation engine
