Today the first HTTP::Engine release appeared that replaces Moose with Shika. Shika provides the essential class-building tools that HTTP::Engine needs with a Moose-compatible syntax, and strips out the rest of the magic.
The performance improvement was dramatic. The "Hello World" time dropped to 0.19seconds on the same hardware (almost 10 times as fast!) and the memory usage dropped to 6.6 Megs.
Catalyst is currently slated to use Moose in the next major version. Now that HTTP::Engine has switched away from Moose for better performance and memory savings, will other projects follow suit?