We have a fairly big protobuf (~37MB). Here is the breakup of times:

Serializing proto to binary std::string  ~= 110ms
Serializing proto to json std::string     ~= 4200ms (size ~ 115MB)

Parsing from binary std::string           ~= 700ms

Parsing from json std::string              ~= 35 mins !!!!!

In comparison,

Parsing same json using rapidjson   ~= 800ms

Code I used to serialize and parse:

std::string json;

google::protobuf::util::JsonStringToMessage(json, &proto);

std::string json;

google::protobuf::util::MessageToJsonString(proto, &json);

Surely this is a not as expected right?

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