Issue
I have a Servlet which calls some business methods and have a requirement to generate a unique transaction id for each and every request this servlet process and we need to pass this transaction id to the business methods.
One solution would be passing this transaction id as a parameter to all the business methods. But this is not a good solution as the code is redundant and unnecessary.
Solution
I have solved this by use of ThreadLocal.
Thread Local can be considered as a scope of access, like a request scope or session scope. It’s a thread scope. You can set any object in Thread Local and this object will be global and local to the specific thread which is accessing this object. I have referred this article to fix this.
Answered By - Rohit
