---
phase: "03-"
plan: 01
subsystem: Gateway
tags: [gateway, cluster, domain-entities, yarp]
dependency_graph:
  requires: []
  provides: [GwCluster, GwDestination, GwHealthCheckConfig, GwSessionAffinityConfig]
  affects: [GwTenantRoute]
tech_stack:
  added:
    - GwCluster (cluster aggregate root)
    - GwDestination (destination endpoint value object)
    - GwHealthCheckConfig (health check config value object)
    - GwSessionAffinityConfig (session affinity config value object)
  patterns:
    - Owned Entity for value objects
    - GUID-based string IDs
    - Soft delete + optimistic concurrency
key_files:
  created:
    - Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwCluster.cs
    - Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwDestination.cs
    - Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwHealthCheckConfig.cs
    - Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwSessionAffinityConfig.cs
decisions:
  - "GwCluster uses string Id (GUID) for YARP compatibility"
  - "GwDestination as owned entity embedded in GwCluster"
  - "Value objects configured for Owned Entity in EF Core"
metrics:
  duration: ""
  completed_date: "2026-03-03"
---

# Phase 03- Plan 01: Gateway Cluster Entities Summary

## One-Liner

Created GwCluster aggregate root with embedded value objects (GwDestination, GwHealthCheckConfig, GwSessionAffinityConfig) to replace the old GwServiceInstance design, aligning with YARP ClusterConfig structure.

## Completed Tasks

| Task | Name | Commit | Files |
|------|------|--------|-------|
| 1 | Create GwHealthCheckConfig value object | 198dc2a | GwHealthCheckConfig.cs |
| 2 | Create GwSessionAffinityConfig value object | b07f56c | GwSessionAffinityConfig.cs |
| 3 | Create GwDestination value object | 7ec34fa | GwDestination.cs |
| 4 | Create GwCluster aggregate root | 774e3fb | GwCluster.cs |

## Verification

- [x] All 4 files created
- [x] Build passes with 0 errors
- [x] Value objects structure matches YARP configuration model

## Deviations from Plan

None - plan executed exactly as written.

## Auth Gates

None.

## Notes

The new GwCluster aggregate follows the existing GatewayAggregate code style with:
- GUID-based string Id for YARP compatibility
- Soft delete (IsDeleted) and optimistic concurrency (Version) fields
- Embedded destinations list and configuration value objects
- Standard audit fields (CreatedBy, CreatedTime, UpdatedBy, UpdatedTime)