Json is simple, but the common idiom is to read it al at once into memory and forget the difficult stuff (which encoding is this json in anyway). Then don't do

Json is simple, but the common idiom is to read it al at once into memory and forget the difficult stuff (which encoding is this json in anyway). Then don't do the other difficult stuff (is this a string or a date type)... so it's faster (maybe) to parse but it doesn't scale for large datasets and your application will need additional deserialization logic. A broad sweeping performance statement like this is just spreading fud.