This definitely seems like a cyclical thing. I'm aware that PayPal (owned by eBay) also went through a rewrite from C++ to Java over the last couple of years fo

This definitely seems like a cyclical thing. I'm aware that PayPal (owned by eBay) also went through a rewrite from C++ to Java over the last couple of years for its mid-tier web service stack (most but not all). The funny thing is that some of the services that never made it to the Java rewrite are now being considered to be rewritten in Scala.