Idempotent-filter

1. IDEMPOTENT FILTER
EXAMPLE

2. AGENDA
• Introduction
• Example
• Running
• Testing
• Reference

3. Introduction
Ensures that only unique messages are received by a service by
checking the unique ID of the incoming message. Note that the ID used
can be generated from the message using an expression defined in the
'idExpression' attribute.
By default, the expression used is '#[message:id]', which means the
underlying endpoint must support unique message IDs for this to work.
Otherwise, a UniqueIdNotSupportedException is thrown.

4. Example
Message Flow

5. Example
XML

6. Explanation
Here you can see that we have configured our Idempotent Filter with simple-text-file-store. So, now this
filter will restrict any duplicates message it finds.
simple-text-file-store technique will store all the messages in file and will check the file to detect duplicates
whenever it receive a input message. For each message the files will be generated.

7. Run the Application

8. Testing
First time
Second time

9. Reference
https://docs.mulesoft.com/mule-user-guide/v/3.7/idempotent-filter

10. THANK YOU