Prompt

Design federated GraphQL architecture.

<existing_services>
{list microservices and their APIs}
</existing_services>

<data_relationships>
{cross-service data needs}
</data_relationships>

<performance_requirements>
{query complexity limits}
</performance_requirements>

Design:
1. Schema federation
2. Entity resolution
3. Gateway setup
4. Performance optimization
5. Error handling
6. Schema governance