# Question about fingerprint and de-duplicating

**URL:** <https://discuss.elastic.co/t/question-about-fingerprint-and-de-duplicating/403>\
**Category:** Logstash\
**Created:** [May 8, 2015, 2:02pm UTC](https://discuss.elastic.co/t/question-about-fingerprint-and-de-duplicating/403 "2015-05-08T14:02:34Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![logstash\_user](https://avatars.discourse-cdn.com/v4/letter/l/f19dbf/32.png) [@logstash\_user](https://discuss.elastic.co/u/logstash_user)\
**Post date:** [May 8, 2015, 2:02pm UTC](https://discuss.elastic.co/t/question-about-fingerprint-and-de-duplicating/403/1 "2015-05-08T14:02:34Z")

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I have in my setup properly setup de-duplication based on fingerprinting messages. I had a question to the community as in is there a way to count the number of duplicates and store it as a field which increments every time a duplicate of a type is seen. Any leads on this will be great ...

thanks

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [May 12, 2015, 12:44am UTC](https://discuss.elastic.co/t/question-about-fingerprint-and-de-duplicating/403/2 "2015-05-12T00:44:58Z")

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[http://logstash.net/docs/1.4.2/filters/metrics](http://logstash.net/docs/1.4.2/filters/metrics) may do what you want.

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**Author:** ![JeremyinNC](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jeremyinnc/32/44868_2.png) [@JeremyinNC](https://discuss.elastic.co/u/JeremyinNC)\
**Post date:** [May 12, 2015, 12:13pm UTC](https://discuss.elastic.co/t/question-about-fingerprint-and-de-duplicating/403/3 "2015-05-12T12:13:22Z")

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Would you put your config here? I am interested in doing this but cannot find a good end to end document on how to do it.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 5:39am UTC](https://discuss.elastic.co/t/question-about-fingerprint-and-de-duplicating/403/4 "2017-07-06T05:39:59Z")

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