Why is gRPC so much faster than a JSON-based REST API? (Benjamin Cane) itnext.io
Why is gRPC so much faster than a JSON-based REST API? Two primary reasons are HTTP/2 and Protobuf.
You’ll find many performance benchmarks for REST with JSON vs. gRPC if you look around. Some of these show that gRPC reduces the latency per request by half.
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