# The difference between log4j and logback

**URL:** <https://discuss.elastic.co/t/the-difference-between-log4j-and-logback/140293>\
**Category:** Logstash\
**Created:** [July 17, 2018, 9:29am UTC](https://discuss.elastic.co/t/the-difference-between-log4j-and-logback/140293 "2018-07-17T09:29:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![springCkWyy](https://avatars.discourse-cdn.com/v4/letter/s/ce73a5/32.png) [@springCkWyy](https://discuss.elastic.co/u/springCkWyy)\
**Post date:** [July 17, 2018, 9:29am UTC](https://discuss.elastic.co/t/the-difference-between-log4j-and-logback/140293/1 "2018-07-17T09:29:00Z")

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Now, Logstash collect log by "log4j" and "logback"， But I need to compare them, and Do you have some materials for me? the different between them.

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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:** [August 14, 2018, 9:29am UTC](https://discuss.elastic.co/t/the-difference-between-log4j-and-logback/140293/2 "2018-08-14T09:29:01Z")

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