# How to do the Implementation for unique flow id pattern

**URL:** <https://discourse.nodered.org/t/how-to-do-the-implementation-for-unique-flow-id-pattern/3884>\
**Category:** Core Development\
**Created:** [11 October 2018 09:30 UTC](https://discourse.nodered.org/t/how-to-do-the-implementation-for-unique-flow-id-pattern/3884 "2018-10-11T09:30:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rajbir123](https://avatars.discourse-cdn.com/v4/letter/r/6bbea6/32.png) [@rajbir123](https://discourse.nodered.org/u/rajbir123)\
**Post date:** [11 October 2018 09:30 UTC](https://discourse.nodered.org/t/how-to-do-the-implementation-for-unique-flow-id-pattern/3884/1 "2018-10-11T09:30:25Z")

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how to customize the nodered for making for design and Implementation for unique flow id pattern, currently yes every tab having unique id but if we have our app which user use it in different devices it may gives same id.  
So with timestamp+my app id can make it unique? but how and what to do which file it require to customize?  
#any help will be appreciated.

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<div class="post-metadata">

**Author:** ![ghayne](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ghayne/32/39_2.png) [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Post date:** [11 October 2018 09:38 UTC](https://discourse.nodered.org/t/how-to-do-the-implementation-for-unique-flow-id-pattern/3884/2 "2018-10-11T09:38:38Z")

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> **[node-red-contrib-uuid](https://flows.nodered.org/node/node-red-contrib-uuid)**
>
> A Node-RED Node for simple, fast generation of RFC4122 UUIDS