Mask, Hide & Replace Sensitive Data In Spring Boot Logs | Console Appender | Rolling File Appender

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Know how to hide or mask or replace sensitive log details printed in JSON or To-String format in the console appender or rollingFile appender using replace (aka %replace expression)
This masking works in both console and rolling-File-Appender. See the complete video to know more.
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The replace expression, Example:
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Hint# Replace toString data: %replace(%msg){((?i)\bproductName\b(=)\w*),"productName=*******"}
Hint# Replace Json String: %replace(%msg){((?i)"\bsellerName\b(":\w*))"[^"]+",$1"*******"}

#A Sample Input Data:
1. Json Data: {"productId":1, "productName":"p1", "sellerName": "s1"}
2. toString Data: [productId=1, productName="p1", sellerName="s1"]
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# Output:
1. Json Data: {"productId":1, "productName":"******", "sellerName": "******"}
2. toString Data: [productId=1, productName="*******", sellerName="******"]
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Development Frameworks & Tools:
#springboot
#postman
#lombok
#slf4j
#log4j
#logging

Feel free to add comments with your suggestions.

~Thank you

[pvsg]

But this is not very optimal solution. What happens if i have to encrypt some 30 fileds? Logback will parse the same log 30 times before printing?

[tiger]

How to replace only last 3 character, instead of entire text????

[rameshkanakarajan]

Hi Codevice, can we create 2 rolling file in same time? one with masking and the other file without masking. I have added two rolling file appender in my logaback file but one rolling file only getting logs and other file is empty.

[GauravSingh-zlcv]

Hello Sir, could you please add regex pattern in description, I couldn't find any

[sangmeshwarrajure]

Please can you share logback.xml file?