[winrid]

Not OP but also replaced a class. Very early in my career, I think I was 20, we were upgrading our Thrift version in a PHP/Java stack.

For some reason all calls were dog slow. Like minutes for simple pages.

Profiling revealed the class in question - and we were spending all our time in deserializing strings.

Copied the latest version of that class from the FB repo and luckily the interfaces were the same.

Worked for the next two years until we finally deprecated the PHP stuff.