# How Periodic\_flush common setting helpful in ruby logstash filter?
**URL:** https://discuss.elastic.co/t/how-periodic-flush-common-setting-helpful-in-ruby-logstash-filter/318980
**Category:** Logstash
**Created:** [November 15, 2022, 4:43pm UTC](https://discuss.elastic.co/t/how-periodic-flush-common-setting-helpful-in-ruby-logstash-filter/318980 "2022-11-15T16:43:04Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@priti](https://discuss.elastic.co/u/priti)
#### Post date: [November 15, 2022, 4:43pm UTC](https://discuss.elastic.co/t/how-periodic-flush-common-setting-helpful-in-ruby-logstash-filter/318980/1 "2022-11-15T16:43:04Z")
I added periodic\_flush =\> true in ruby filter but I didn't found any difference.
```auto
ruby {
path =>
periodic_flush => true
}
```
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [November 15, 2022, 6:45pm UTC](https://discuss.elastic.co/t/how-periodic-flush-common-setting-helpful-in-ruby-logstash-filter/318980/2 "2022-11-15T18:45:37Z")
The periodic\_flush option is [defined](https://github.com/elastic/logstash/blob/9242105c3c31ad9d6c2a6e0f5b2b755069b3b47c/logstash-core/lib/logstash/filters/base.rb#L133) in the base filter class which every filter inherits, so the option can be set on any filter, but has no effect on most of them.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 13, 2022, 6:45pm UTC](https://discuss.elastic.co/t/how-periodic-flush-common-setting-helpful-in-ruby-logstash-filter/318980/3 "2022-12-13T18:45:54Z")
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