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Designing the BFF Contract: Request Aggregation & Client-Specific Shaping
In the previous article, we established when a BFF earns its overhead. This article assumes you have made that decision and are now facing the harder question: how do you actually design the thing wel
devpath-traveler.nguyenviettung.id.vn15 min read
#bff#backend-for-frontend#api-design#versioning#api-contract#frontendarchitecture#vuejs#request-batching#caching#microservices#composition#backend-orchestration#payload-design#contract-testing#performance
Archit Mittal
BFF patterns are underappreciated in the API design world. The request aggregation approach you describe is exactly what I implement when building automation dashboards — the frontend needs very specific data shapes that don't map cleanly to individual microservice responses. One pattern I've found useful: versioning BFF contracts independently from backend services, so mobile and web clients can evolve at different speeds without breaking each other. The caching layer at the BFF level is also a game changer for reducing downstream load.