# Elastic search transport client singleton
**URL:** https://discuss.elastic.co/t/elastic-search-transport-client-singleton/14766
**Category:** Elasticsearch
**Created:** [December 9, 2013, 3:05am UTC](https://discuss.elastic.co/t/elastic-search-transport-client-singleton/14766 "2013-12-09T03:05:13Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@cyrilforce](https://discuss.elastic.co/u/cyrilforce)
#### Post date: [December 9, 2013, 3:05am UTC](https://discuss.elastic.co/t/elastic-search-transport-client-singleton/14766/1 "2013-12-09T03:05:13Z")
Hi All,
I had created a transport client singleton that's being used in a web
application. I would like to know that if i didn't close the transport
client will it create memory leaks as we do re-deploy the web application
constantly. In addition, what is the best practices on handling the
elastic search transport client ? As i wanted the transport client shared
and reuse by multiple code in the same web application.
Should i just let the connection timeout itself or explicit close the
connection for each web deploy.
Thanks.
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### Author:  [@jprante](https://discuss.elastic.co/u/jprante)
#### Post date: [December 9, 2013, 8:52am UTC](https://discuss.elastic.co/t/elastic-search-transport-client-singleton/14766/2 "2013-12-09T08:52:48Z")
The TransportClient uses a thread pool for managing connections to remote
nodes.
For each web deploy, it is important to close all resources with
client.close() and to release the threadpool with
client.threadPool().shutdown()
Example:
[https://github.com/jprante/elasticsearch-support/blob/master/src/main/java/org/xbib/elasticsearch/support/client/TransportClientBase.java#L90](https://github.com/jprante/elasticsearch-support/blob/master/src/main/java/org/xbib/elasticsearch/support/client/TransportClientBase.java#L90)
You can share a client instance between many concurrent threads. There is
no need to close transport client connections after actionGet().
Jörg
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### Author:  [@cyrilforce](https://discuss.elastic.co/u/cyrilforce)
#### Post date: [December 10, 2013, 8:20am UTC](https://discuss.elastic.co/t/elastic-search-transport-client-singleton/14766/3 "2013-12-10T08:20:50Z")
Hi Jörg,
Thanks for you advices.I have implemented the close conn mechanism through
the servletcontextlistener as it is a webapp.
Thanks.
Cyril
On Mon, Dec 9, 2013 at 4:52 PM, [joergprante@gmail.com](mailto:joergprante@gmail.com) \<[joergprante@gmail.com](mailto:joergprante@gmail.com)
> wrote:
> The TransportClient uses a thread pool for managing connections to remote
> nodes.
>
> For each web deploy, it is important to close all resources with
> client.close() and to release the threadpool with
> client.threadPool().shutdown()
>
> Example:
> [https://github.com/jprante/elasticsearch-support/blob/master/src/main/java/org/xbib/elasticsearch/support/client/TransportClientBase.java#L90](https://github.com/jprante/elasticsearch-support/blob/master/src/main/java/org/xbib/elasticsearch/support/client/TransportClientBase.java#L90)
>
> You can share a client instance between many concurrent threads. There is
> no need to close transport client connections after actionGet().
>
> Jörg
>
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Regards,
Chee Hoo
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 2:02am UTC](https://discuss.elastic.co/t/elastic-search-transport-client-singleton/14766/4 "2017-07-06T02:02:18Z")