Saturday, April 22, 2017

The Power of Invisible reCaptcha from Google and How to Integrate it With Your Web Application (Spring Boot)



In this post I will talk about the exciting new version of Google reCaptcha, the invisible reCaptcha (well, almost invisible)! Also, I will demonstrate how to integrate it with a typical Spring Boot web app and then do some customizations to better control its behavior.

Generate a unique N letters word sequence (by using relationship between Factoradic base system and Lexicographic Permutation Order of a String)

Lets say that you want to generate a unique 3 letters code sequence to be used as a primary key for some data recodes. Also let assume ...