Issue #5: Implement Standardized Health Check System #17
Description
Issue #5: Implement Standardized Health Check System
Summary
Implement a standardized health check system across all microservices to enable reliable monitoring, load balancing, and orchestration. This system should provide consistent health endpoints that can be consumed by Kubernetes liveness/readiness probes, API gateways, and monitoring systems.
Background
Currently, services lack standardized health check endpoints. This makes it difficult to:
- Configure Kubernetes liveness and readiness probes
- Monitor service health in production
- Implement proper load balancing
- Detect and handle degraded service states
- Integrate with monitoring and alerting systems
Proposed Changes
-
Create shared health check package
- Add
packages/health/package with reusable health check utilities - Support for basic health, readiness, and liveness checks
- Database connectivity checks
- Dependency health checks (external services, etc.)
- Add
-
Implement health endpoints in all services
- Add
/health,/health/ready, and/health/liveendpoints - Integrate with existing services (transcription, documentation, coding)
- Return standardized JSON responses
- Add
-
Update Kubernetes configurations
- Add liveness and readiness probes to service deployments
- Configure appropriate timeouts and thresholds
-
Add health check tests
- Unit tests for health check logic
- Integration tests for health endpoints
Acceptance Criteria
-
packages/health/package created with reusable health check utilities - All services expose
/health,/health/ready, and/health/liveendpoints - Health endpoints return standardized JSON responses
- Database connectivity is checked in readiness probes
- Kubernetes manifests updated with liveness/readiness probes
- Unit and integration tests added for health checks
- Documentation updated with health check usage
Implementation Details
Health Check Types
- Liveness: Indicates if the service is running (should always return 200 if process is alive)
- Readiness: Indicates if the service is ready to accept traffic (checks dependencies like DB)
- Health: Comprehensive health status including dependencies
Response Format
{
"status": "healthy" | "degraded" | "unhealthy",
"timestamp": "2024-01-01T00:00:00Z",
"checks": {
"database": {
"status": "healthy",
"responseTime": 5
},
"memory": {
"status": "healthy",
"usage": 45.2
}
}
}Status: Completed
Related Issues
- Issue CI/CD Pipeline with GitHub Actions #2: Monorepo Developer Experience
- Issue Rework CI/CD pipeline plan after PR #11 review #15: CI/CD Pipeline (health checks needed for deployment)