Dependencies
- auth-service RestClient for internal user reads.
- feed-service RestClient.
- Redis streams, search-history rate limit, and nearby presence (H3).
- Configured base URLs for messaging and media.
Timeouts and circuit breakers belong on the client adapter, not in the use case. A failed downstream call for a non-critical side effect should become an outbox or inbox retry, not a user-facing 500, when the business write has already committed.