[signa11]

> What troubles has protobuf caused you?

we are primarily a c++ shop, so all comments are from that vantage point. in no particular order following:

     1. extremely bloated generated code.

     2. wire format is not optimal, specifically for large nested messages which trashes the cache on a already severely constrained h/w.

     3. not easy to perform shared-memory exchange for large messages, for example, if you have 'string' types in your messages, those cannot be allocated on arenas.

     4. <this space is for rent>