# Elasticsearch cache configuration
**URL:** https://discuss.elastic.co/t/elasticsearch-cache-configuration/16034
**Category:** Elasticsearch
**Created:** [February 26, 2014, 2:02pm UTC](https://discuss.elastic.co/t/elasticsearch-cache-configuration/16034 "2014-02-26T14:02:09Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Hediye\_Delkhosh](https://discuss.elastic.co/u/Hediye_Delkhosh)
#### Post date: [February 26, 2014, 2:02pm UTC](https://discuss.elastic.co/t/elasticsearch-cache-configuration/16034/1 "2014-02-26T14:02:09Z")
Hello.
I've installed Elasticsearch on web server and it use most part of memory,
I searched and finally found cache module and it's configuration but I
don't know how config Elasticsearch. Where should I insert below
configurations???
index.cache.field.max\_size: 50000
index.cache.field.expire: 10m
index.cache.field.type: soft
should I enabale Cache module?? and where??
Thank you so much 🙂
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### Author:  [@Binh\_Ly\_2](https://discuss.elastic.co/u/Binh_Ly_2)
#### Post date: [February 26, 2014, 2:59pm UTC](https://discuss.elastic.co/t/elasticsearch-cache-configuration/16034/2 "2014-02-26T14:59:04Z")
For ES 1.0, the field data settings are here:
[http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-fielddata.html](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-fielddata.html)
The filter cache settings are here:
[http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-cache.html](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-cache.html)
The easiest way is to set these in the elasticsearch.yml file.
I would caution that you'll probably need to first investigate and
understand your memory usage before trying to change any of these settings.
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### Author:  [@Hediye\_Delkhosh](https://discuss.elastic.co/u/Hediye_Delkhosh)
#### Post date: [February 26, 2014, 3:19pm UTC](https://discuss.elastic.co/t/elasticsearch-cache-configuration/16034/3 "2014-02-26T15:19:40Z")
@Binh Ly thank you for reply.
I don't know where should I insert this configs.
I've installes FOS-elastica in my project, there is a elasticsearch.yml in
my project and another one is in /etc/elasticsearch. where should I insert
configs?
I've tested server memory usage. Elasticserach service use memory alot.
Thank you 🙂
On Wednesday, February 26, 2014 6:29:04 PM UTC+3:30, Binh Ly wrote:
> For ES 1.0, the field data settings are here:
>
> [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-fielddata.html)
>
> The filter cache settings are here:
>
> [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-cache.html)
>
> The easiest way is to set these in the elasticsearch.yml file.
>
> I would caution that you'll probably need to first investigate and
> understand your memory usage before trying to change any of these settings.
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### Author:  [@polyfractal](https://discuss.elastic.co/u/polyfractal)
#### Post date: [February 26, 2014, 3:51pm UTC](https://discuss.elastic.co/t/elasticsearch-cache-configuration/16034/4 "2014-02-26T15:51:07Z")
If you simply want to decrease the amount of memory that Elasticsearch is
using, you need to change your heap size (via the HEAP\_SIZE environment
variable). That controls the total memory allocated to Elasticsearch.
Echoing what Binh said...try not to change the field-data settings unless
you know what you are doing. You should not enable soft references for
field-data, this is a very bad option. It causes excessive GC thrashing
and is not needed (especially now that 1.0 has circuit breaker logic built
in). Similarly, the time expiration on field-data is typically a poor
option, since it unnecessarily thrashes the GC too.
On Wednesday, February 26, 2014 10:19:40 AM UTC-5, Hediye Delkhosh wrote:
> @Binh Ly thank you for reply.
> I don't know where should I insert this configs.
> I've installes FOS-elastica in my project, there is a elasticsearch.yml in
> my project and another one is in /etc/elasticsearch. where should I insert
> configs?
>
> I've tested server memory usage. Elasticserach service use memory alot.
>
> Thank you 🙂
>
> On Wednesday, February 26, 2014 6:29:04 PM UTC+3:30, Binh Ly wrote:
>
> > For ES 1.0, the field data settings are here:
> >
> > [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-fielddata.html)
> >
> > The filter cache settings are here:
> >
> > [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-cache.html)
> >
> > The easiest way is to set these in the elasticsearch.yml file.
> >
> > I would caution that you'll probably need to first investigate and
> > understand your memory usage before trying to change any of these settings.
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [February 26, 2014, 10:10pm UTC](https://discuss.elastic.co/t/elasticsearch-cache-configuration/16034/5 "2014-02-26T22:10:10Z")
Configuration settings go in your elasticsearch.yml file.
Regards,
Mark Walkom
Infrastructure Engineer
Campaign Monitor
email: [markw@campaignmonitor.com](mailto:markw@campaignmonitor.com)
web: [www.campaignmonitor.com](http://www.campaignmonitor.com)
On 27 February 2014 02:51, Zachary Tong [zacharyjtong@gmail.com](mailto:zacharyjtong@gmail.com) wrote:
> If you simply want to decrease the amount of memory that Elasticsearch is
> using, you need to change your heap size (via the HEAP\_SIZE environment
> variable). That controls the total memory allocated to Elasticsearch.
>
> Echoing what Binh said...try not to change the field-data settings unless
> you know what you are doing. You should not enable soft references for
> field-data, this is a very bad option. It causes excessive GC thrashing
> and is not needed (especially now that 1.0 has circuit breaker logic built
> in). Similarly, the time expiration on field-data is typically a poor
> option, since it unnecessarily thrashes the GC too.
>
> On Wednesday, February 26, 2014 10:19:40 AM UTC-5, Hediye Delkhosh wrote:
>
> > @Binh Ly thank you for reply.
> > I don't know where should I insert this configs.
> > I've installes FOS-elastica in my project, there is a elasticsearch.yml
> > in my project and another one is in /etc/elasticsearch. where should I
> > insert configs?
> >
> > I've tested server memory usage. Elasticserach service use memory alot.
> >
> > Thank you 🙂
> >
> > On Wednesday, February 26, 2014 6:29:04 PM UTC+3:30, Binh Ly wrote:
> >
> > > For ES 1.0, the field data settings are here:
> > >
> > > [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/)
> > > reference/current/index-modules-fielddata.html
> > >
> > > The filter cache settings are here:
> > >
> > > [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/)
> > > reference/current/index-modules-cache.html
> > >
> > > The easiest way is to set these in the elasticsearch.yml file.
> > >
> > > I would caution that you'll probably need to first investigate and
> > > understand your memory usage before trying to change any of these settings.
> >
> > --
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> > "elasticsearch" group.
> > To unsubscribe from this group and stop receiving emails from it, send an
> > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com).
> > To view this discussion on the web visit
> > [https://groups.google.com/d/msgid/elasticsearch/325c57fb-7cef-4805-8708-c59ef14f6d73%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/325c57fb-7cef-4805-8708-c59ef14f6d73%40googlegroups.com)
> > .
>
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:46am UTC](https://discuss.elastic.co/t/elasticsearch-cache-configuration/16034/6 "2017-07-06T01:46:59Z")