Instead of creating a "Unified Data Store" that forces you to migrate terabytes of legacy data into a single database engine, the Unified Repository pattern uses GraphQL to create a .
In this architecture, the AppSync API becomes the "Repository" interface. It sits between the client applications and the backend data sources, abstracting the complexity of the underlying infrastructure. Whether your user profiles are in Amazon RDS, your product catalog is in DynamoDB, and your payment history is accessible via a legacy REST API, AppSync presents them to the client as a single, cohesive graph. appsync unified repo
The transforms AWS AppSync from a mystical, console-dependent service into a developer-friendly, auditable, and scalable asset. Instead of creating a "Unified Data Store" that
test('getPost generates correct DynamoDB GetItem request', () => { const context = { args: { id: '123' } }; const result = evaluateMappingTemplate(requestTemplate, context); expect(result).toEqual({ operation: 'GetItem', key: { id: { S: '123' } } }); }); Whether your user profiles are in Amazon RDS,