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Thanks, that's the exact info I was looking for.

I've unfortunately been bitten before by choosing json as a serialization format, specifically in go, due to JSON performance dominating processing.

No criticism though, JSON is the right choice for many types of APIs.

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You can and should use Twirp's protobuf serialization instead for almost all applications. The JSON serialization is really intended for developers and low-throughput cross-language clients.

Protobuf serialization isn't free, but it's definitely cheaper than JSON serialization.

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