I want to understand why the protocol buffers solution for .NET developed by Marc Gravell is as fast as it is.
I can understand how the original Google solution achieved its performance: it pre-generates optimized code for object serialization; I've written some serialization by hand and know that it is possible to write pretty fast code this way if you avoid reflection. But Marc's library is a runtime solution that uses attributes and doesn't produce any generated code. So how does it work ?