[cdekok]

Probably by the php extension in c :) I would think that phalcon router will be faster too.

[fooyc]

The README says that the c extension is only 1.5x-2x faster than the pure PHP Pux. So this doesn't explain 50x faster.

[pedro93]

1.5x-2x different is from apache.

the pure dispatching speed can be 10+x faster with C extension.