[racket] R5.3 and #lang web-server compilation

Eli, Matt, and Jay

Under 5.3, there's been a near order-of-magnitude improvement in 
compilation time for the web-server language.

I didn't notice prior discussion of this, although Jay has mentioned 
compilation time as a potential drawback in implementing stateless code.

Its a very meaningful positive change for developer productivity, and I 
think Jay's concern is now obsolete with 5.3.

Could I ask what has changed?

On a separate topic, I extensively load tested the ffi/com library 
Saturday through Wednesday. Found nothing adverse to report. Really nice 
job, especially compared to MysterX. Performance was breathtaking 
compared to its predecessor. Thanks again.


R./

Zack