In a series of posts we’ll do “Firebase From Scratch”, an introduction to Firebase and its concepts and ideas. Hopefully, reading this series will give you a firm grasp of what Firebase is and what it can do.

The for service you are likely to want to write is a so called “login handler”. And that’s because it’s how you customize authentication in Cubeia Firebase. So this post will walk you through how to write a simple authentication mechanism of your choice.