# How many application can connect/use CDB using confd

**URL:** <https://dmap-community.ductus.global/t/how-many-application-can-connect-use-cdb-using-confd/3791>\
**Category:** CDB and CDB API\
**Created:** [August 25, 2021, 9:24am UTC](https://dmap-community.ductus.global/t/how-many-application-can-connect-use-cdb-using-confd/3791 "2021-08-25T09:24:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bkumar](https://avatars.discourse-cdn.com/v4/letter/b/6bbea6/32.png) [@bkumar](https://dmap-community.ductus.global/u/bkumar)\
**Post date:** [August 25, 2021, 9:24am UTC](https://dmap-community.ductus.global/t/how-many-application-can-connect-use-cdb-using-confd/3791/1 "2021-08-25T09:24:17Z")

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Hi All  
How many application(at a time) can connect/use CDB using confd ??

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**Author:** ![cohult](https://yyz2.discourse-cdn.com/flex010/user_avatar/dmap-community.ductus.global/cohult/32/221_2.png) [@cohult](https://dmap-community.ductus.global/u/cohult)\
**Post date:** [August 25, 2021, 10:27am UTC](https://dmap-community.ductus.global/t/how-many-application-can-connect-use-cdb-using-confd/3791/2 "2021-08-25T10:27:14Z")

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Hi,

Assuming you are referring to the CDB API. Then the number of applications connecting is unbounded. No limit is set by ConfD. The only limit will be the Linux file descriptor limit and if you run out of memory in your system.

Regarding startup with a burst of a large number of applications connecting simultaneously, there is a configurable limit for the max queue length of pending connections. See the confd.conf(5) man page under “/confdConfig/confdIpcListenBacklog” for details.