What's included

• productive-level system

  Working code does not equal "productive-level". After being will-tested, "productive-level" code should think about things like:: - performance - easy to observe and debug online - easy to upgrade or bug fix for other people without docs - easy to back up/restore - easy to migrate - easy to use (UX, automatic function, fail-safe and so on) - better performance to growing data - Solution for big traffic coming - recovering automaticly