Challenges : 1. Creation of stripe payment intent
2. When payment succeeded get the webhook event data back and put it in postgres db asynchronously

Solution : I studied the stripe api documentation very thoroughly after that, Writing the code for creation of payment intent was tough but I looked into other resources and medium documentation. After that I started developing REST endpoints and functions which will help me to create stripe payment intent. Payment intent is a type of whole lifecycle of the payment from begin to end. This is very necessary for the payment to succeed. Then after that I wrote the java code line by line understanding it and testing it live on the go. It worked after lots of debugging and testing.

Solution : To webhook event data, now webhook are asynchronous events which are sent by stripe server to the frontend server on a post request made to listen if there is any updates on the payments done, whether it is successfull, failed or processing at the moment. So here I need to update whatever the data of webhook comes into postgres db.
It was not easy to do this as this should only be done if the payment succeeds . So I need to create a webhook event and listener for that purpose and a REST endpoint where it would listent these events.
After developing REST endpoint, I was not able to understand how to put data into postgres, Then I setup the postgres with my project, but still how to put data. Then i learnt about flyway migration from some resource i use that to create table on the go whenever the data comes and then to put data I used jdbcTemplate autowired and used sql.update() command with the refrence of this jdbcTemplate. I was able to do it.