A mobile client makes seven separate requests to seven different REST endpoints to populate a single dashboard screen. Each request returns a response with many fields that the screen does not display. Reviewing the API design, the change that is most likely to reduce both response time and network energy is to:

Question

Accepted Answer

Introduce a composed endpoint that returns only the fields the dashboard requires in a single response, removing both the unused payload and most of the round trips.

Answer

Compress every existing response with a stronger compression algorithm so that the seven calls transmit less data while keeping the seven separate round trips intact.

Answer

Switch the seven endpoints from JSON responses to a binary format such as Protocol Buffers without changing the number of round trips or the set of fields returned.

Answer

Open a long-lived connection from the mobile client to each endpoint at application start, so that the per-request connection setup cost is paid only once at launch.

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A mobile client makes seven separate requests to seven different REST endpoints ...

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