# Logstash plugin is successfully installed but not found
**URL:** https://discuss.elastic.co/t/logstash-plugin-is-successfully-installed-but-not-found/58596
**Category:** Logstash
**Created:** [August 22, 2016, 5:01pm UTC](https://discuss.elastic.co/t/logstash-plugin-is-successfully-installed-but-not-found/58596 "2016-08-22T17:01:59Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@sen](https://discuss.elastic.co/u/sen)
#### Post date: [August 22, 2016, 5:01pm UTC](https://discuss.elastic.co/t/logstash-plugin-is-successfully-installed-but-not-found/58596/1 "2016-08-22T17:01:59Z")
Hi folks,
I am using logstash 2.3.2 and for one of my project I have to save some data in RAM. I asked a question on stackoverflow (Logstash: is it possible to save documents in memory?) to get a filter for that and the most appropriate filter is memcached (even if this one is unofficial).
I downloaded the plugin, I generated the gem file (which is not empty) and I successfully installed the plugin.
However, when i run logsatsh by using this filter in my configuration file, I get the following error:
:reason=\>"Couldn't find any filter plugin named 'memcached'. Are you sure this is correct? Trying to load the memcached filter plugin resulted in this error: no such file to load -- logstash/filters/memcached", :level=\>:error}
Moreover, when i use the command bin/logstah-plugin list,the filter memcached is not present.
I don't understand why it is happening. I followed this discussion ( [Logstash plugin installed but not found](https://discuss.elastic.co/t/logstash-plugin-installed-but-not-found/24369) ) but without success !
So, do you know how I can solve this problem ?
Thank you for your attention and your help.
S
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 4:42am UTC](https://discuss.elastic.co/t/logstash-plugin-is-successfully-installed-but-not-found/58596/2 "2017-07-06T04:42:13Z")