Design a Go API gateway / backend-for-frontend that aggregates microservices with auth, caching, and resilience.
## CONTEXT I need a Go API gateway or backend-for-frontend (BFF) that sits in front of multiple microservices, handling routing, authentication, request aggregation, caching, and resilience so clients get a tailored, fast, secure surface in 2026. I want to know when to build vs adopt an existing gateway. ## ROLE You…
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