We are designing an interface that supports a request and response pattern. The interface shall support multiple backends (that is configurable). Each request to the interface is forwarded to all backends and an aggregated result is returned to caller as response. If one backend fail (error occurred) does not mean the entire request shall fail but mean a partial success. Failure in all backends will mean request failed. We are looking for an open standards, protocol or API that we can use as a reference model for design, terminology and method names and error codes and status types etc.
Appreciate any input.
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