Falcor vs GraphQL: What are the differences?

1. Data Fetching Model: Falcor utilizes a "path" concept to fetch data directly from a JSON-like graph structure, enabling users to request specific data using paths. In contrast, GraphQL uses a declarative data fetching model where clients can specify the exact data needed using queries.

2. Data Caching: Falcor has built-in caching mechanisms to help reduce network requests by storing fetched data locally, allowing for efficient data retrieval when needed. GraphQL does not have built-in caching mechanisms and relies on the client to manage caching strategies.

3. Server-Side Implementation: Falcor is typically server-centric, with most of the logic residing on the server to handle data fetching and manipulation. On the other hand, GraphQL puts more emphasis on the client-side, providing flexibility for clients to define their data requirements without server modifications.

4. Response Structure: Falcor typically returns complete JSON responses containing the requested data along with metadata, which can be tailored to fit specific use cases. In contrast, GraphQL responses mirror the shape of the query, providing precise data requested by the client without additional metadata clutter.

5. Batching Requests: Falcor allows for batching multiple requests into a single network call, enhancing efficiency and reducing overhead. In contrast, GraphQL inherently supports requesting multiple resources in a single query, minimizing network round trips for complex data requirements.

6. Type System: GraphQL enforces a strongly typed schema where clients must adhere to predefined types and structures, ensuring consistency and reliability in data fetching processes. Falcor, while providing schema-like capabilities with its JSON graph structure, does not enforce strict types on clients, offering more flexibility but potentially leading to data integrity issues.

In Summary, Falcor and GraphQL differ in their data fetching models, caching mechanisms, server-side implementation, response structures, request batching capabilities, and type system enforcement.