i'm doing a lot of json encoding/decoding in a web app. does capn proto or another help speeding up? it seems like it is not like one funcion call to use these.
For Cap'n Proto to help, you have to switch from using JSON format to using Cap'n Proto format, which is indeed a lot more than just one function call. But it should be orders of magnitude faster than JSON. So if profiles show you're spending a lot of time in JSON handling, then, yes, it could help.
Right now, Cap'n Proto makes the most sense for server <-> server communications, e.g. between a front-end and a back-end. In the future I hope to have a production-ready implementation in Javascript, which would allow you to use Cap'n Proto all the way up the stack.
